Implement simple hole stencil to resolve holes in GDS polygons.

Reviewed-on: #48

.github/workflows/cmake.yml

@@ -0,0 +1,37 @@
+name: CMake
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+env:
+  # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
+  BUILD_TYPE: Release
+
+jobs:
+  build:
+    # The CMake configure and build commands are platform agnostic and should work equally
+    # well on Windows or Mac.  You can convert this to a matrix build if you need
+    # cross-platform coverage.
+    # See: https://docs.github.com/en/free-pro-team@latest/actions/learn-github-actions/managing-complex-workflows#using-a-build-matrix
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    
+    - name: Install system dependencies
+      if: runner.os == 'Linux'
+      run: |
+        sudo apt-get update
+        sudo apt-get -y install libgtk-3-dev gettext
+
+    - name: Configure CMake
+      # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
+      # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type
+      run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}
+
+    - name: Build
+      # Build your program with the given configuration
+      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}

.gitmodules

@@ -2,3 +2,10 @@
 	path = c-style-checker
 	url = https://git.shimatta.de/mhu/c-style-checker
 	branch = master
+[submodule "3rdparty/libfort"]
+	path = 3rdparty/libfort
+	url = https://git.shimatta.de/3rd-party/libfort
+	branch = develop
+[submodule "3rdparty/poly2tri"]
+	path = 3rdparty/poly2tri
+	url = https://git.shimatta.de/3rd-party/poly2tri.git

AUR/PKGBUILD

@@ -1,7 +1,7 @@
 # Maintainer: Mario Hüttel <mario (dot) huettel (!) gmx (dot) net>
 
 pkgname=gds-render
-pkgver=20191020.403.448de30
+pkgver=v1.2_10_g00d02b8
 pkgrel=1
 pkgdesc="Conversion tool for converting GDS layout files into TikZ Code and PDF"
 arch=('i686' 'x86_64')
@@ -10,13 +10,13 @@ licence=('GPLv2')
 depends=('glib2' 'gtk3' 'cairo')
 makedepends=('cmake' 'git')
 privides=('gds-render')
-source=("${pkgname}-git"::"git+https://git.shimatta.de/mhu/gds-render.git")
+source=("${pkgname}-git"::"git+https://git.shimatta.de/mhu/gds-render.git" "https://git.shimatta.de/3rd-party/libfort.git")
-sha1sums=('SKIP')
+sha1sums=('SKIP' 'SKIP')
 
 pkgver () {
 	_date=`date +"%Y%m%d"`
-	cd "${srcdir}/${pkgname}-git"
+	cd "${srcdir}/${pkgname}-git/version"
-	echo "$_date.$(git rev-list --count master).$(git rev-parse --short master)"
+	echo "$(echo "$(sh ./generate-version-string.sh)" | sed 's/-/_/g')"
 }
 
 build () {
@@ -26,6 +26,13 @@ build () {
 	make
 }
 
+prepare () {
+	cd "${pkgname}-git"
+	git submodule init
+	git config submodule.libfort.url "$srcdir/libfort"
+	git submodule update
+}
+
 package () {
 	cd "$srcdir/$pkgname-git/build"
 	make DESTDIR="${pkgdir}" install 

CMakeLists.txt

@@ -1,4 +1,8 @@
-project(gds-render)
+if (POLICY CMP0048)
+  cmake_policy(SET CMP0048 NEW)
+endif (POLICY CMP0048)
+
+project(gds-render LANGUAGES C CXX)
 
 if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
   set(CMAKE_INSTALL_PREFIX "/usr/" CACHE PATH "..." FORCE)
@@ -24,7 +28,7 @@ if(NOT WIN32)
   set(BoldWhite   "${Esc}[1;37m")
 endif()
 
-cmake_minimum_required(VERSION 2.8)
+cmake_minimum_required(VERSION 3.0)
 find_package(PkgConfig REQUIRED)
 pkg_search_module(GLIB REQUIRED glib-2.0)
 pkg_check_modules(GTK3 REQUIRED gtk+-3.0)
@@ -33,8 +37,6 @@ pkg_check_modules(CAIRO REQUIRED cairo)
 include_directories(${GLIB_INCLUDE_DIRS} ${GTK3_INCLUDE_DIRS} ${CAIRO_INCLUDE_DIRS} ${CMAKE_CURRENT_SOURCE_DIR}/include)
 add_subdirectory(plugins)
 
-add_compile_options(-Wall -Wextra -Wold-style-declaration -Wuninitialized -Wmaybe-uninitialized -Wunused-parameter)
-
 IF(CMAKE_BUILD_TYPE STREQUAL "Debug")
         message("${Yellow}Debug mode for translations used!${ColorReset}")
 	add_definitions(-DGETTEXT_PACKAGE=\"gds-render\" -DLOCALEDATADIR=\"${CMAKE_CURRENT_BINARY_DIR}/translations/output\")
@@ -44,13 +46,7 @@ else(CMAKE_BUILD_TYPE STREQUAL "Debug")
 	add_definitions(-DGETTEXT_PACKAGE=\"gds-render\" -DLOCALEDATADIR=\"/usr/share\")
 ENDIF(CMAKE_BUILD_TYPE STREQUAL "Debug")
 
-add_subdirectory(resources)
-add_subdirectory(doxygen)
-add_subdirectory(translations)
-add_subdirectory(version)
 
-link_directories(${GLIB_LINK_DIRS} ${GTK3_LINK_DIRS} ${CAIRO_LINK_DIRS})
-add_definitions(${GLIB2_CFLAGS_OTHER})
 
 aux_source_directory("widgets" LAYER_SOURCES)
 aux_source_directory("cell-selector" CELL_SELECTOR_SOURCES)
@@ -74,15 +70,42 @@ set(SOURCE_GENERATED
   ${CMAKE_CURRENT_BINARY_DIR}/resources/resources.c
 )
 
+link_directories(${GLIB_LINK_DIRS} ${GTK3_LINK_DIRS} ${CAIRO_LINK_DIRS})
 SET_SOURCE_FILES_PROPERTIES(${SOURCE_GENERATED} PROPERTIES GENERATED 1)
 
+add_subdirectory(test)
+
+add_subdirectory(resources)
+add_subdirectory(doxygen)
+add_subdirectory(translations)
+add_subdirectory(version)
+set(FORT_ENABLE_TESTING OFF CACHE INTERNAL "")
+
+add_subdirectory(3rdparty/libfort)
+
+if(OPENGL_PREVIEW)
+	message("${Green}OpenGL preview activated${ColorReset}")
+	add_definitions(-DGDS_RENDER_OPGENGL_PREVIEW)
+	add_subdirectory(preview-rendering)
+endif(OPENGL_PREVIEW)
+
+add_compile_options(-Wall -Wextra -Wold-style-declaration -Wuninitialized -Wmaybe-uninitialized -Wunused-parameter)
+
+link_directories(${GLIB_LINK_DIRS} ${GTK3_LINK_DIRS} ${CAIRO_LINK_DIRS})
+add_definitions(${GLIB2_CFLAGS_OTHER})
+
 add_executable(${PROJECT_NAME} ${SOURCE} ${SOURCE_GENERATED})
 add_dependencies(${PROJECT_NAME} glib-resources)
 add_dependencies(${PROJECT_NAME} version)
 add_dependencies(${PROJECT_NAME} translations)
+if(OPENGL_PREVIEW)
+	add_dependencies(${PROJECT_NAME} opengl-preview)
+	target_link_libraries(${PROJECT_NAME} opengl-preview)
+endif(OPENGL_PREVIEW)
 
-target_link_libraries(${PROJECT_NAME} ${GLIB_LDFLAGS} ${GTK3_LDFLAGS} ${CAIRO_LDFLAGS} m version ${CMAKE_DL_LIBS})
 install (TARGETS ${PROJECT_NAME} 
 	RUNTIME	
 		DESTINATION bin
 	)
+target_link_libraries(${PROJECT_NAME} ${GLIB_LDFLAGS} ${GTK3_LDFLAGS} ${CAIRO_LDFLAGS} m version ${CMAKE_DL_LIBS} fort)
+

README.MD

@@ -1,5 +1,7 @@
 # GDS-Render Readme
 
+[![CMake](https://github.com/0mhu/gds-render/actions/workflows/cmake.yml/badge.svg?branch=master)](https://github.com/0mhu/gds-render/actions/workflows/cmake.yml)
+
 This software is a rendering programm for GDS2 layout files.
 The GDS2 format is mainly used in integrated circuit development.
 This program allows the conversion of a GDS file to a vector graphics file.

cell-selector/cell-statistics-renderer.c

@@ -0,0 +1,106 @@
+/*
+ * GDSII-Converter
+ * Copyright (C) 2022  Mario Hüttel <mario.huettel@gmx.net>
+ *
+ * This file is part of GDSII-Converter.
+ *
+ * GDSII-Converter is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * GDSII-Converter is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GDSII-Converter.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * @file cell-statistics-renderer.c
+ * @brief CellStatisticsRenderer GObject Class
+ * @author Mario Hüttel <mario.huettel@gmx.net>
+ */
+
+/**
+ * @addtogroup CellStatisticsRenderer
+ * @{
+ */
+
+#include <gds-render/cell-selector/cell-statistics-renderer.h>
+
+G_DEFINE_TYPE(CellStatisticsRenderer, cell_statistics_renderer, GTK_TYPE_CELL_RENDERER_TEXT)
+
+enum {
+	PROP_CELL_STAT = 1,
+	PROP_COUNT
+};
+
+static void cell_statistics_renderer_set_property(GObject      *object,
+					   guint        param_id,
+					   const GValue *value,
+					   GParamSpec   *pspec)
+{
+	GValue val = G_VALUE_INIT;
+	GString *string;
+	const struct gds_cell_statistics *cell_stat;
+
+	switch (param_id) {
+	case PROP_CELL_STAT:
+		cell_stat = (const struct gds_cell_statistics *)g_value_get_pointer(value);
+		g_value_init(&val, G_TYPE_STRING);
+		string = g_string_new_len("", 5);
+		if (cell_stat)
+			g_string_printf(string, "%zu (%zu) | %zu (%zu)", cell_stat->total_vertex_count,
+					cell_stat->vertex_count, cell_stat->total_gfx_count, cell_stat->gfx_count);
+		g_value_set_string(&val, string->str);
+		g_object_set_property(object, "text", &val);
+		g_value_unset(&val);
+		g_string_free(string, TRUE);
+		break;
+	default:
+		G_OBJECT_WARN_INVALID_PROPERTY_ID(object, param_id, pspec);
+		break;
+	}
+}
+
+static void cell_statistics_renderer_get_property(GObject      *object,
+					   guint        param_id,
+					   GValue	*value,
+					   GParamSpec   *pspec)
+{
+	(void)value;
+
+	switch (param_id) {
+	default:
+		G_OBJECT_WARN_INVALID_PROPERTY_ID(object, param_id, pspec);
+		break;
+	}
+}
+
+static GParamSpec *properties[PROP_COUNT];
+
+void cell_statistics_renderer_class_init(CellStatisticsRendererClass *klass)
+{
+	GObjectClass *oclass = G_OBJECT_CLASS(klass);
+
+	oclass->set_property = cell_statistics_renderer_set_property;
+	oclass->get_property = cell_statistics_renderer_get_property;
+
+	properties[PROP_CELL_STAT] = g_param_spec_pointer("cell-stat", "cell-stat",
+							  "Cell statistics", G_PARAM_WRITABLE);
+	g_object_class_install_properties(oclass, PROP_COUNT, properties);
+}
+
+void cell_statistics_renderer_init(CellStatisticsRenderer *self)
+{
+	(void)self;
+}
+
+GtkCellRenderer *cell_statistics_renderer_new(void)
+{
+	return GTK_CELL_RENDERER(g_object_new(TYPE_GDS_RENDER_CELL_STAT_RENDERER, NULL));
+}
+
+/** @} */

cell-selector/lib-cell-renderer.c

@@ -88,11 +88,13 @@ static void lib_cell_renderer_set_property(GObject      *object,
 		g_value_init(&val, G_TYPE_STRING);
 		g_value_set_string(&val, ((struct gds_library *)g_value_get_pointer(value))->name);
 		g_object_set_property(object, "text", &val);
+		g_value_unset(&val);
 		break;
 	case PROP_CELL:
 		g_value_init(&val, G_TYPE_STRING);
 		g_value_set_string(&val, ((struct gds_cell *)g_value_get_pointer(value))->name);
 		g_object_set_property(object, "text", &val);
+		g_value_unset(&val);
 		break;
 	case PROP_ERROR_LEVEL:
 		/* Set cell color according to error level */
@@ -100,6 +102,7 @@ static void lib_cell_renderer_set_property(GObject      *object,
 		convert_error_level_to_color(&color, g_value_get_uint(value));
 		g_value_set_boxed(&val, &color);
 		g_object_set_property(object, "foreground-rgba", &val);
+		g_value_unset(&val);
 		break;
 	default:
 		G_OBJECT_WARN_INVALID_PROPERTY_ID(object, param_id, pspec);

command-line.c

@@ -30,6 +30,7 @@
 
 #include <stdio.h>
 #include <glib/gi18n.h>
+#include <string.h>
 
 #include <gds-render/command-line.h>
 #include <gds-render/gds-utils/gds-parser.h>
@@ -38,6 +39,41 @@
 #include <gds-render/output-renderers/latex-renderer.h>
 #include <gds-render/output-renderers/external-renderer.h>
 #include <gds-render/gds-utils/gds-tree-checker.h>
+#include <gds-render/gds-utils/gds-statistics.h>
+
+#include <fort.h>
+
+#ifndef COUNT_OF
+#define COUNT_OF(x) (sizeof((x))/sizeof(0[(x)]))
+#endif
+
+enum analysis_format {
+	ANA_FORMAT_SIMPLE = 0,
+	ANA_FORMAT_CELLS_ONLY,
+	ANA_FORMAT_PRETTY,
+};
+
+struct analysis_format_cmdarg {
+	enum analysis_format format;
+	const char *argument;
+};
+
+
+
+static const struct analysis_format_cmdarg analysis_format_lookup[] = {
+{
+	.format = ANA_FORMAT_SIMPLE,
+	.argument = "simple",
+},
+{
+	.format = ANA_FORMAT_PRETTY,
+	.argument = "pretty",
+},
+{
+	.format = ANA_FORMAT_CELLS_ONLY,
+	.argument = "cellsonly"
+}
+};
 
 static int string_array_count(char **string_array)
 {
@@ -136,14 +172,14 @@ static struct gds_cell *find_gds_cell_in_lib(struct gds_library *lib, const char
 }
 
 int command_line_convert_gds(const char *gds_name,
-			      const char *cell_name,
+			     const char *cell_name,
-			      char **renderers,
+			     char **renderers,
-			      char **output_file_names,
+			     char **output_file_names,
-			      const char *layer_file,
+			     const char *layer_file,
-			      struct external_renderer_params *ext_param,
+			     struct external_renderer_params *ext_param,
-			      gboolean tex_standalone,
+			     gboolean tex_standalone,
-			      gboolean tex_layers,
+			     gboolean tex_layers,
-			      double scale)
+			     double scale)
 {
 	int ret = -1;
 	GList *libs = NULL;
@@ -155,6 +191,10 @@ int command_line_convert_gds(const char *gds_name,
 	LayerSettings *layer_sett;
 	GdsOutputRenderer *current_renderer;
 
+	const struct gds_library_parsing_opts gds_parsing_options = {
+		.simplified_polygons = 1,
+	};
+
 	/* Check if parameters are valid */
 	if (!gds_name || !cell_name || !output_file_names || !layer_file || !renderers) {
 		printf(_("Probably missing argument. Check --help option\n"));
@@ -173,7 +213,7 @@ int command_line_convert_gds(const char *gds_name,
 
 	/* Load GDS */
 	clear_lib_list(&libs);
-	res = parse_gds_from_file(gds_name, &libs);
+	res = parse_gds_from_file(gds_name, &libs, &gds_parsing_options);
 	if (res)
 		goto ret_destroy_library_list;
 
@@ -224,6 +264,8 @@ int command_line_convert_gds(const char *gds_name,
 		gds_output_renderer_render_output(current_renderer, toplevel_cell, scale);
 	}
 
+	ret = 0;
+
 ret_destroy_library_list:
 	clear_lib_list(&libs);
 ret_clear_renderers:
@@ -234,4 +276,192 @@ ret_destroy_layer_mapping:
 	return ret;
 }
 
+static void indent_line(int level)
+{
+	while (level--)
+		printf("\t");
+}
+
+static int printf_indented(int level, const char *format, ...)
+{
+	int ret;
+
+	va_list a_list;
+	va_start(a_list, format);
+	indent_line(level);
+	ret = vprintf(format, a_list);
+	va_end(a_list);
+
+	return ret;
+}
+
+static void print_simple_stat(GList *lib_stat_list)
+{
+	int indentation_level = 0;
+	GList *lib_iter;
+	GList *cell_iter;
+	const struct gds_library *lib;
+	const struct gds_cell *cell;
+	const struct gds_lib_statistics *lib_stat;
+	const struct gds_cell_statistics *cell_stat;
+
+	for (lib_iter = lib_stat_list; lib_iter; lib_iter = g_list_next(lib_iter)) {
+		lib = (const struct gds_library *)lib_iter->data;
+		lib_stat = &lib->stats;
+		printf_indented(indentation_level, "Library %s\n", lib->name);
+		indentation_level++;
+
+		for (cell_iter = lib->cells; cell_iter; cell_iter = g_list_next(cell_iter)) {
+			cell = (const struct gds_cell *)cell_iter->data;
+			cell_stat = &cell->stats;
+			printf_indented(indentation_level, "Cell %s\n", cell->name);
+			indentation_level++;
+			printf_indented(indentation_level, "Reference count: %zu\n", cell_stat->reference_count);
+			printf_indented(indentation_level, "Graphics count: %zu\n", cell_stat->gfx_count);
+			printf_indented(indentation_level, "Total Graphics count: %zu\n", cell_stat->total_gfx_count);
+			printf_indented(indentation_level, "Vertex count: %zu\n", cell_stat->vertex_count);
+			printf_indented(indentation_level, "Total Vertex count: %zu\n", cell_stat->total_vertex_count);
+			printf_indented(indentation_level, "Unresolved children: %d\n",
+					cell->checks.unresolved_child_count);
+			printf_indented(indentation_level, "Reference loop: %s\n",
+					cell->checks.affected_by_reference_loop ? "yes" : "no");
+
+			indentation_level--;
+		}
+		printf_indented(indentation_level, "Cell count: %zu\n", lib_stat->cell_count);
+		printf_indented(indentation_level, "Reference count: %zu\n", lib_stat->reference_count);
+		printf_indented(indentation_level, "Graphics count: %zu\n", lib_stat->gfx_count);
+		printf_indented(indentation_level, "Vertex count: %zu\n", lib_stat->vertex_count);
+	}
+}
+
+static void table_stat_create_cell_row(struct gds_cell *cell, ft_table_t *tab)
+{
+	ft_printf_ln(tab, "%s|%s|%zu|%zu|%zu|%zu|%zu|%d|%s",
+		     cell->parent_library->name,
+		     cell->name,
+		     cell->stats.gfx_count,
+		     cell->stats.total_gfx_count,
+		     cell->stats.vertex_count,
+		     cell->stats.total_vertex_count,
+		     cell->stats.reference_count,
+		     cell->checks.unresolved_child_count,
+		     cell->checks.affected_by_reference_loop ? "yes" : "no");
+}
+
+static void table_stat_table_for_lib(struct gds_library *lib, ft_table_t *tab)
+{
+	ft_printf_ln(tab, "%s|%zu|%zu|-|%zu|-|%zu|-|-",
+		     lib->name,
+		     lib->stats.cell_count,
+		     lib->stats.gfx_count,
+		     lib->stats.vertex_count,
+		     lib->stats.reference_count);
+	g_list_foreach(lib->cells, (GFunc)table_stat_create_cell_row, tab);
+}
+
+static void print_table_stat(GList *lib_list)
+{
+	ft_table_t *table;
+	table = ft_create_table();
+
+	ft_set_cell_prop(table, 0, FT_ANY_COLUMN, FT_CPROP_ROW_TYPE, FT_ROW_HEADER);
+	ft_write_ln(table, "Library", "Cell", "GFX", "GFX+", "Vertices", "Vertices+", "Refs", "Unresolved Refs", "Loops");
+
+	g_list_foreach(lib_list, (GFunc)table_stat_table_for_lib, table);
+
+
+	printf("%s\n", ft_to_string(table));
+	ft_destroy_table(table);
+}
+
+static void print_statistics(enum analysis_format format, GList *lib_list)
+{
+	switch (format) {
+	case ANA_FORMAT_PRETTY:
+		print_table_stat(lib_list);
+		break;
+	default:
+		print_simple_stat(lib_list);
+		break;
+	}
+}
+
+static void print_cell_names(GList *lib_list)
+{
+	GList *lib_iter;
+	GList *name_iter;
+	struct gds_library *lib;
+
+	for (lib_iter = lib_list; lib_iter; lib_iter = g_list_next(lib_iter)) {
+		lib = (struct gds_library *)lib_iter->data;
+		for (name_iter = lib->cell_names; name_iter; name_iter = name_iter->next) {
+			printf("%s\n", (const char *)name_iter->data);
+		}
+	}
+}
+
+int command_line_analyze_lib(const char *format, const char *gds_name)
+{
+	enum analysis_format fmt = ANA_FORMAT_SIMPLE;
+	size_t idx;
+	int found = 0;
+	GList *lib_list = NULL;
+	const struct gds_library_parsing_opts parsing_opts = {
+		.simplified_polygons = 0,
+	};
+	int res;
+	int ret = 0;
+	GList *lib_iter;
+
+	g_return_val_if_fail(gds_name, -1002);
+
+	if (format && *format) {
+		/* Check format if it is not empty */
+		for (idx = 0; idx < COUNT_OF(analysis_format_lookup); idx++) {
+			if (!strcmp(analysis_format_lookup[idx].argument, format)) {
+				/* Format specifier matches */
+				fmt = analysis_format_lookup[idx].format;
+				found = 1;
+			}
+		}
+
+		if (!found) {
+			fprintf(stderr, "No format matches %s. Using default.\n", format);
+		}
+	}
+
+	/* Load the GDS file */
+	res = parse_gds_from_file(gds_name, &lib_list, &parsing_opts);
+	if (res) {
+		fprintf(stderr, "Error parsing GDS file\n");
+		(void)clear_lib_list(&lib_list);
+		ret = res;
+		goto return_val;
+	}
+
+	for (lib_iter = lib_list; lib_iter; lib_iter = g_list_next(lib_iter)) {
+		res = gds_tree_check_cell_references((struct gds_library *)lib_iter->data);
+		if (res < 0) {
+			fprintf(stderr, "Error checking cell references. Will continue...\n");
+		}
+		res = gds_tree_check_reference_loops((struct gds_library *)lib_iter->data);
+		if (res < 0) {
+			fprintf(stderr, "Error checking cell reference loops. Will continue...\n");
+		}
+	}
+
+	if (fmt == ANA_FORMAT_CELLS_ONLY) {
+		print_cell_names(lib_list);
+		goto return_clear_libs;
+	}
+
+	print_statistics(fmt, lib_list);
+
+return_clear_libs:
+	clear_lib_list(&lib_list);
+return_val:
+	return ret;
+}
+
 /** @} */

doxygen/Doxyconfig

@@ -1,4 +1,4 @@
-# Doxyfile 1.8.16
+# Doxyfile 1.8.17
 
 # This file describes the settings to be used by the documentation system
 # doxygen (www.doxygen.org) for a project.
@@ -309,7 +309,7 @@ OPTIMIZE_OUTPUT_SLICE  = NO
 # parses. With this tag you can assign which parser to use for a given
 # extension. Doxygen has a built-in mapping, but you can override or extend it
 # using this tag. The format is ext=language, where ext is a file extension, and
-# language is one of the parsers supported by doxygen: IDL, Java, Javascript,
+# language is one of the parsers supported by doxygen: IDL, Java, JavaScript,
 # Csharp (C#), C, C++, D, PHP, md (Markdown), Objective-C, Python, Slice,
 # Fortran (fixed format Fortran: FortranFixed, free formatted Fortran:
 # FortranFree, unknown formatted Fortran: Fortran. In the later case the parser
@@ -535,8 +535,8 @@ HIDE_UNDOC_MEMBERS     = NO
 HIDE_UNDOC_CLASSES     = NO
 
 # If the HIDE_FRIEND_COMPOUNDS tag is set to YES, doxygen will hide all friend
-# (class|struct|union) declarations. If set to NO, these declarations will be
+# declarations. If set to NO, these declarations will be included in the
-# included in the documentation.
+# documentation.
 # The default value is: NO.
 
 HIDE_FRIEND_COMPOUNDS  = NO
@@ -851,8 +851,10 @@ INPUT_ENCODING         = UTF-8
 # If left blank the following patterns are tested:*.c, *.cc, *.cxx, *.cpp,
 # *.c++, *.java, *.ii, *.ixx, *.ipp, *.i++, *.inl, *.idl, *.ddl, *.odl, *.h,
 # *.hh, *.hxx, *.hpp, *.h++, *.cs, *.d, *.php, *.php4, *.php5, *.phtml, *.inc,
-# *.m, *.markdown, *.md, *.mm, *.dox, *.py, *.pyw, *.f90, *.f95, *.f03, *.f08,
+# *.m, *.markdown, *.md, *.mm, *.dox (to be provided as doxygen C comment),
-# *.f, *.for, *.tcl, *.vhd, *.vhdl, *.ucf, *.qsf and *.ice.
+# *.doc (to be provided as doxygen C comment), *.txt (to be provided as doxygen
+# C comment), *.py, *.pyw, *.f90, *.f95, *.f03, *.f08, *.f, *.for, *.tcl, *.vhd,
+# *.vhdl, *.ucf, *.qsf and *.ice.
 
 FILE_PATTERNS          = *.c \
                          *.cc \
@@ -928,7 +930,7 @@ EXCLUDE_SYMLINKS       = NO
 # Note that the wildcards are matched against the file with absolute path, so to
 # exclude all test directories for example use the pattern */test/*
 
-EXCLUDE_PATTERNS       =
+EXCLUDE_PATTERNS       = */test/*
 
 # The EXCLUDE_SYMBOLS tag can be used to specify one or more symbol names
 # (namespaces, classes, functions, etc.) that should be excluded from the
@@ -1265,9 +1267,9 @@ HTML_TIMESTAMP         = NO
 
 # If the HTML_DYNAMIC_MENUS tag is set to YES then the generated HTML
 # documentation will contain a main index with vertical navigation menus that
-# are dynamically created via Javascript. If disabled, the navigation index will
+# are dynamically created via JavaScript. If disabled, the navigation index will
 # consists of multiple levels of tabs that are statically embedded in every HTML
-# page. Disable this option to support browsers that do not have Javascript,
+# page. Disable this option to support browsers that do not have JavaScript,
 # like the Qt help browser.
 # The default value is: YES.
 # This tag requires that the tag GENERATE_HTML is set to YES.
@@ -1555,8 +1557,14 @@ FORMULA_FONTSIZE       = 10
 
 FORMULA_TRANSPARENT    = YES
 
+# The FORMULA_MACROFILE can contain LaTeX \newcommand and \renewcommand commands
+# to create new LaTeX commands to be used in formulas as building blocks. See
+# the section "Including formulas" for details.
+
+FORMULA_MACROFILE      =
+
 # Enable the USE_MATHJAX option to render LaTeX formulas using MathJax (see
-# https://www.mathjax.org) which uses client side Javascript for the rendering
+# https://www.mathjax.org) which uses client side JavaScript for the rendering
 # instead of using pre-rendered bitmaps. Use this if you do not have LaTeX
 # installed or if you want to formulas look prettier in the HTML output. When
 # enabled you may also need to install MathJax separately and configure the path
@@ -1626,7 +1634,7 @@ MATHJAX_CODEFILE       =
 SEARCHENGINE           = YES
 
 # When the SERVER_BASED_SEARCH tag is enabled the search engine will be
-# implemented using a web server instead of a web client using Javascript. There
+# implemented using a web server instead of a web client using JavaScript. There
 # are two flavors of web server based searching depending on the EXTERNAL_SEARCH
 # setting. When disabled, doxygen will generate a PHP script for searching and
 # an index file used by the script. When EXTERNAL_SEARCH is enabled the indexing

doxygen/compilation.dox

@@ -30,7 +30,7 @@ Development is done with the following library versions:
 
 | Cairographics | GLib2      | GTK3      |
 | ------------- | ---------- | --------- |
-| 1.17.3        | 2.60.6-1   | 3.24.10-1 |
+| 1.17.2        | 2.64.2     | 3.24.18   |
 
 @section comp-instr Compilation Instructions
 @subsection linux-build General Linux Build Instruction
@@ -47,7 +47,7 @@ Once cmake has finished, type
  make
 @endcode
 to build the program and 
-
+ 
 @code
  make documentation
 @endcode
@@ -59,7 +59,7 @@ The subfolder 'AUR' contains a PKGBUILD file to build an Archlinux/Pacman packag
 
 @subsection comp-warnings Compiler Warnings
 
-The compiler will throw the following warnings. Compiled with GCC 8.2.1.
+The compiler will throw the following warnings. Compiled with GCC 9.3.0.
 
 | Warning | Assessment |
 | ------- | ---------- |

doxygen/versioning.dox

@@ -5,7 +5,7 @@
 The version number of this application consists of a given version in the format of 'v1.0'.
 Where the first number indicates a major release and the second number indicates minor changes.
 
-Versions, including release candidates and path-levels, are tagged in git.
+Versions, including release candidates and patch-levels, are tagged in git.
 
 @subsection rc Release Candidates
 Release candidates are software versions that seem stable and functional to become a new version but testing is not fully finished. These versions are marked with an '-rcX', where X is the number of the release candidate.

gds-render-gui.c

@@ -37,17 +37,23 @@
 #include <gds-render/layer/layer-selector.h>
 #include <gds-render/widgets/activity-bar.h>
 #include <gds-render/cell-selector/lib-cell-renderer.h>
+#include <gds-render/cell-selector/cell-statistics-renderer.h>
 #include <gds-render/output-renderers/latex-renderer.h>
 #include <gds-render/output-renderers/cairo-renderer.h>
 #include <gds-render/widgets/conv-settings-dialog.h>
 #include <gds-render/geometric/cell-geometrics.h>
 #include <gds-render/version.h>
 
+#ifdef GDS_RENDER_OPGENGL_PREVIEW
+#include <preview-rendering/preview-rendering-gui.h>
+#endif
+
 /** @brief Columns of selection tree view */
 enum cell_store_columns {
 	CELL_SEL_LIBRARY = 0,
 	CELL_SEL_CELL,
 	CELL_SEL_CELL_ERROR_STATE, /**< Used for cell color and selectability */
+	CELL_SEL_STAT,
 	CELL_SEL_COLUMN_COUNT /**< @brief Not a column. Used to determine count of columns */
 };
 
@@ -66,6 +72,9 @@ struct _GdsRenderGui {
 
 	/* Custom fields */
 	GtkWindow *main_window;
+#ifdef GDS_RENDER_OPGENGL_PREVIEW
+	OpenGlPreviewGui *preview_gui;
+#endif
 	GtkWidget *convert_button;
 	GtkWidget *open_button;
 	GtkWidget *load_layer_button;
@@ -187,7 +196,8 @@ static gboolean cell_store_filter_visible_func(GtkTreeModel *model, GtkTreeIter
 
 	gtk_tree_model_get(model, iter, CELL_SEL_CELL, &cell, CELL_SEL_LIBRARY, &lib, -1);
 
-	if (lib) {
+	/* Show always, if this is a pure lib entry */
+	if (lib && !cell) {
 		result = TRUE;
 		goto exit_filter;
 	}
@@ -218,10 +228,11 @@ int gds_render_gui_setup_cell_selector(GdsRenderGui *self)
 {
 	GtkCellRenderer *render_cell;
 	GtkCellRenderer *render_lib;
+	GtkCellRenderer *render_vertex_count;
 	GtkTreeViewColumn *column;
 
 	self->cell_tree_store = gtk_tree_store_new(CELL_SEL_COLUMN_COUNT, G_TYPE_POINTER,
-					 G_TYPE_POINTER, G_TYPE_UINT);
+					 G_TYPE_POINTER, G_TYPE_UINT, G_TYPE_POINTER);
 
 	/* Searching */
 	self->cell_filter = GTK_TREE_MODEL_FILTER(
@@ -237,6 +248,7 @@ int gds_render_gui_setup_cell_selector(GdsRenderGui *self)
 
 	render_cell = lib_cell_renderer_new();
 	render_lib = lib_cell_renderer_new();
+	render_vertex_count = cell_statistics_renderer_new();
 
 	column = gtk_tree_view_column_new_with_attributes(_("Library"), render_lib, "gds-lib", CELL_SEL_LIBRARY, NULL);
 	gtk_tree_view_append_column(self->cell_tree_view, column);
@@ -245,6 +257,10 @@ int gds_render_gui_setup_cell_selector(GdsRenderGui *self)
 							  "error-level", CELL_SEL_CELL_ERROR_STATE, NULL);
 	gtk_tree_view_append_column(self->cell_tree_view, column);
 
+	column = gtk_tree_view_column_new_with_attributes(_("Vertex | GFX Count"), render_vertex_count, "cell-stat", CELL_SEL_STAT,
+							  NULL);
+	gtk_tree_view_append_column(self->cell_tree_view, column);
+
 	/* Callback for selection
 	 * This prevents selecting a library
 	 */
@@ -254,6 +270,10 @@ int gds_render_gui_setup_cell_selector(GdsRenderGui *self)
 	return 0;
 }
 
+const struct gds_cell_statistics cc =  {
+	.vertex_count = 12,
+};
+
 /**
  * @brief Callback function of Load GDS button
  * @param button
@@ -277,6 +297,10 @@ static void on_load_gds(gpointer button, gpointer user)
 	char *filename;
 	unsigned int cell_error_level;
 
+	const struct gds_library_parsing_opts gds_parsing_options = {
+		.simplified_polygons = 1,
+	};
+
 	self = RENDERER_GUI(user);
 	if (!self)
 		return;
@@ -306,7 +330,7 @@ static void on_load_gds(gpointer button, gpointer user)
 	clear_lib_list(&self->gds_libraries);
 
 	/* Parse new GDSII file */
-	gds_result = parse_gds_from_file(filename, &self->gds_libraries);
+	gds_result = parse_gds_from_file(filename, &self->gds_libraries, &gds_parsing_options);
 
 	/* Delete file name afterwards */
 	g_free(filename);
@@ -348,6 +372,7 @@ static void on_load_gds(gpointer button, gpointer user)
 					   CELL_SEL_CELL, gds_c,
 					   CELL_SEL_CELL_ERROR_STATE, cell_error_level,
 					   CELL_SEL_LIBRARY, gds_c->parent_library,
+					   CELL_SEL_STAT, &gds_c->stats,
 					   -1);
 		} /* for cells */
 	} /* for libraries */
@@ -647,6 +672,9 @@ static void gds_render_gui_dispose(GObject *gobject)
 	g_clear_object(&self->save_layer_button);
 	g_clear_object(&self->open_button);
 	g_clear_object(&self->select_all_button);
+#ifdef GDS_RENDER_OPGENGL_PREVIEW
+	g_clear_object(&self->preview_gui);
+#endif
 
 	if (self->main_window) {
 		g_signal_handlers_destroy(self->main_window);
@@ -690,19 +718,13 @@ static void on_select_all_layers_clicked(GtkWidget *button, gpointer user_data)
 	layer_selector_select_all_layers(gui->layer_selector, TRUE);
 }
 
-static void auto_naming_clicked(GtkWidget *button, gpointer user_data)
+static gboolean auto_naming_ask_for_override(GdsRenderGui *gui)
 {
-	GdsRenderGui *gui;
 	GtkDialog *dialog;
-	gboolean overwrite;
+	gint dialog_result;
-	int dialog_result;
+	gboolean overwrite = FALSE;
-	(void)button;
 
-	gui = RENDERER_GUI(user_data);
+	g_return_val_if_fail(RENDERER_IS_GUI(gui), FALSE);
-
-	/* Don't do anything if the selector is empty. */
-	if (!layer_selector_contains_elements(gui->layer_selector))
-		return;
 
 	/* Ask for overwrite */
 	dialog = GTK_DIALOG(gtk_message_dialog_new(gui->main_window, GTK_DIALOG_USE_HEADER_BAR, GTK_MESSAGE_QUESTION,
@@ -719,6 +741,25 @@ static void auto_naming_clicked(GtkWidget *button, gpointer user_data)
 	}
 	gtk_widget_destroy(GTK_WIDGET(dialog));
 
+	return overwrite;
+}
+
+static void auto_naming_clicked(GtkWidget *button, gpointer user_data)
+{
+	GdsRenderGui *gui;
+	gboolean overwrite = FALSE;
+	(void)button;
+
+	gui = RENDERER_GUI(user_data);
+
+	/* Don't do anything if the selector is empty. */
+	if (!layer_selector_contains_elements(gui->layer_selector))
+		return;
+
+	/* Ask, if names shall be overwritten, if they are not empty */
+	if (layer_selector_num_of_named_elements(gui->layer_selector) > 0)
+		overwrite = auto_naming_ask_for_override(gui);
+
 	layer_selector_auto_name_layers(gui->layer_selector, overwrite);
 }
 
@@ -737,7 +778,15 @@ static void gds_render_gui_init(GdsRenderGui *self)
 	GtkWidget *activity_bar_box;
 	GtkWidget *auto_color_button;
 	GtkWidget *auto_naming_button;
+#ifdef GDS_RENDER_OPGENGL_PREVIEW
+	OpenGlPreviewGui *preview_gui;
 
+	preview_gui = opengl_preview_gui_new();
+	/* No need to reference the preview gui. It is already referenced upon creation */
+	self->preview_gui = preview_gui;
+
+	opengl_preview_gui_show(preview_gui);
+#endif
 	main_builder = gtk_builder_new_from_resource("/gui/main.glade");
 
 	self->cell_tree_view = GTK_TREE_VIEW(gtk_builder_get_object(main_builder, "cell-tree"));

gds-utils/gds-parser.c

@@ -43,6 +43,7 @@
 #include <glib/gi18n.h>
 
 #include <gds-render/gds-utils/gds-parser.h>
+#include <gds-render/gds-utils/gds-statistics.h>
 
 /**
  * @brief Default units assumed for library.
@@ -50,8 +51,8 @@
  */
 #define GDS_DEFAULT_UNITS (10E-9)
 
-#define GDS_ERROR(fmt, ...) printf("[PARSE_ERROR] " fmt "\n", ##__VA_ARGS__) /**< @brief Print GDS error*/
+#define GDS_ERROR(fmt, ...) fprintf(stderr, "[PARSE_ERROR] " fmt "\n", ##__VA_ARGS__) /**< @brief Print GDS error*/
-#define GDS_WARN(fmt, ...) printf("[PARSE_WARNING] " fmt "\n", ##__VA_ARGS__) /**< @brief Print GDS warning */
+#define GDS_WARN(fmt, ...) fprintf(stderr, "[PARSE_WARNING] " fmt "\n", ##__VA_ARGS__) /**< @brief Print GDS warning */
 
 #if GDS_PRINT_DEBUG_INFOS
 	/**< @brief standard printf. But can be disabled in code. */
@@ -80,6 +81,7 @@ enum gds_record {
 	STRANS = 0x1A01,
 	BOX = 0x2D00,
 	LAYER = 0x0D02,
+	DATATYPE = 0x0E02,
 	WIDTH = 0x0F03,
 	PATHTYPE = 0x2102,
 	COLROW = 0x1302,
@@ -265,7 +267,8 @@ static uint16_t gds_convert_unsigned_int16(const char *data)
  * @param library_ptr Return of newly created library.
  * @return Newly created list pointer
  */
-static GList *append_library(GList *curr_list, struct gds_library **library_ptr)
+static GList *append_library(GList *curr_list, const struct gds_library_parsing_opts *opts,
+			     struct gds_library **library_ptr)
 {
 	struct gds_library *lib;
 
@@ -275,8 +278,15 @@ static GList *append_library(GList *curr_list, struct gds_library **library_ptr)
 		lib->name[0] = 0;
 		lib->unit_in_meters = GDS_DEFAULT_UNITS; // Default. Will be overwritten
 		lib->cell_names = NULL;
-	} else
+		/* Copy the settings into the library */
+		memcpy(&lib->parsing_opts, opts, sizeof(struct gds_library_parsing_opts));
+		lib->stats.cell_count = 0;
+		lib->stats.gfx_count = 0;
+		lib->stats.reference_count = 0;
+		lib->stats.vertex_count = 0;
+	} else {
 		return NULL;
+	}
 	if (library_ptr)
 		*library_ptr = lib;
 
@@ -352,6 +362,10 @@ static GList *append_cell(GList *curr_list, struct gds_cell **cell_ptr)
 		cell->parent_library = NULL;
 		cell->checks.unresolved_child_count = GDS_CELL_CHECK_NOT_RUN;
 		cell->checks.affected_by_reference_loop = GDS_CELL_CHECK_NOT_RUN;
+		cell->stats.reference_count = 0;
+		cell->stats.total_vertex_count = 0;
+		cell->stats.gfx_count = 0;
+		cell->stats.vertex_count = 0;
 	} else
 		return NULL;
 	/* return cell */
@@ -487,20 +501,102 @@ static void parse_reference_list(gpointer gcell_ref, gpointer glibrary)
 }
 
 /**
- * @brief Scans cell references inside cell
+ * @brief Simplify graphics objects
- This function searches all the references in \p gcell and updates the gds_cell_instance::cell_ref field in each instance
+ * @param graphics gfx struct
+ * @param user_data GDS library
+ */
+static void simplify_graphics(gpointer graphics, gpointer user_data)
+{
+	struct gds_graphics *gfx;
+	const struct gds_point *first_vertex = NULL;
+	const struct gds_point *prev_vertex = NULL;
+	const struct gds_point *current_vertex;
+	GList *vertex_iter;
+	GList *next_iter;
+	(void)user_data;
+	size_t processed_count = 0U;
+	size_t removed_count = 0U;
+
+	gfx = (struct gds_graphics *)graphics;
+	if (gfx->gfx_type == GRAPHIC_POLYGON) {
+		GDS_INF("\t\t\tPolygon found\n");
+
+		/* Loop over all vertices */
+		for (vertex_iter = gfx->vertices; vertex_iter;) {
+			current_vertex = (const struct gds_point *)vertex_iter->data;
+			next_iter = g_list_next(vertex_iter);
+			processed_count++;
+
+			if (vertex_iter == gfx->vertices) {
+				/* This is the first vertex */
+				first_vertex = current_vertex;
+				prev_vertex = NULL;
+			}
+
+			if (prev_vertex) {
+				if (current_vertex->x == prev_vertex->x && current_vertex->y == prev_vertex->y) {
+					/* Vertex is the same as the previous one */
+					GDS_INF("\t\t\t\tDuplicate vertex (%d,%d). Removing...\n",
+						current_vertex->x, current_vertex->y);
+
+					/* Delete the current one from the list */
+					gfx->vertices = g_list_remove_link(gfx->vertices, vertex_iter);
+
+					/* Free the data */
+					if (vertex_iter->data)
+						free(vertex_iter->data);
+					vertex_iter->data = NULL;
+					g_list_free_1(vertex_iter);
+					removed_count++;
+				} else if (!g_list_next(vertex_iter)) {
+					/* This is the last element in the list */
+					if (current_vertex->x == first_vertex->x &&
+							current_vertex->y == first_vertex->y) {
+						GDS_INF("\t\t\t\tLast vertex is identical to first vertex (%d,%d). Removing\n",
+							current_vertex->x, current_vertex->y);
+						gfx->vertices = g_list_remove_link(gfx->vertices, vertex_iter);
+						if (vertex_iter->data)
+							free(vertex_iter->data);
+						g_list_free_1(vertex_iter);
+						removed_count++;
+					} else {
+						GDS_WARN("First vertex is not coincident with first vertex, although the GDS file format specifies this. However, this is not a problem.");
+					}
+				}
+			}
+
+			vertex_iter = next_iter;
+			prev_vertex = current_vertex;
+		}
+		GDS_INF("\t\t\tProcessed %zu vertices. %zu removed.\n", processed_count, removed_count);
+	}
+}
+
+/**
+ * @brief Scans cell and resolves references and simplifies polygons
+ * This function searches all the references in \p gcell and updates the gds_cell_instance::cell_ref field in each instance
+ *
  * @param gcell pointer cast of #gds_cell *
  * @param library Library where the cell references are searched in
  */
-static void scan_cell_reference_dependencies(gpointer gcell, gpointer library)
+static void scan_cell_references_and_polygons(gpointer gcell, gpointer library)
 {
 	struct gds_cell *cell = (struct gds_cell *)gcell;
+	struct gds_library *my_lib = (struct gds_library *)library;
+	int simplify_polygons;
+
+	simplify_polygons = my_lib->parsing_opts.simplified_polygons;
 
 	GDS_INF("\tScanning cell: %s\n", cell->name);
-
+	GDS_INF("\t\tCell references\n");
 	/* Scan all library references */
 	g_list_foreach(cell->child_cells, parse_reference_list, library);
 
+
+	GDS_INF("\t\tSimplifying Polygons%s\n", simplify_polygons ? "" : ": skipped");
+	if (simplify_polygons) {
+		g_list_foreach(cell->graphic_objs, simplify_graphics, library);
+	}
 }
 
 /**
@@ -516,7 +612,16 @@ static void scan_library_references(gpointer library_list_item, gpointer user)
 	(void)user;
 
 	GDS_INF("Scanning Library: %s\n", lib->name);
-	g_list_foreach(lib->cells, scan_cell_reference_dependencies, lib);
+	g_list_foreach(lib->cells, scan_cell_references_and_polygons, lib);
+}
+
+static void calc_library_stats(gpointer library_list_item, gpointer user)
+{
+	struct gds_library *lib = (struct gds_library *)library_list_item;
+	(void)user;
+
+	GDS_INF("Calculating stats for Library: %s\n", lib->name);
+	gds_statistics_calc_cummulative_counts_in_lib(lib);
 }
 
 /**
@@ -600,6 +705,7 @@ static void convert_aref_to_sref(struct gds_cell_array_instance *aref, struct gd
 		for (row = 0; row < aref->rows; row++) {
 			/* Create new instance for this row/column and configure data */
 			container_cell->child_cells = append_cell_ref(container_cell->child_cells, &sref_inst);
+			container_cell->stats.reference_count++;
 			if (!sref_inst) {
 				GDS_ERROR("Appending cell ref failed!");
 				continue;
@@ -616,7 +722,8 @@ static void convert_aref_to_sref(struct gds_cell_array_instance *aref, struct gd
 	GDS_INF("Converted AREF to SREFs\n");
 }
 
-int parse_gds_from_file(const char *filename, GList **library_list)
+int parse_gds_from_file(const char *filename, GList **library_list,
+			const struct gds_library_parsing_opts *parsing_options)
 {
 	char *workbuff;
 	int read;
@@ -696,7 +803,7 @@ int parse_gds_from_file(const char *filename, GList **library_list)
 		/* if begin: Allocate structures */
 		switch (rec_type) {
 		case BGNLIB:
-			lib_list = append_library(lib_list, &current_lib);
+			lib_list = append_library(lib_list, parsing_options, &current_lib);
 			if (lib_list == NULL) {
 				GDS_ERROR("Allocating memory failed");
 				run = -3;
@@ -770,7 +877,7 @@ int parse_gds_from_file(const char *filename, GList **library_list)
 				run = -4;
 				break;
 			}
-			GDS_INF("\tEntering boundary/Box\n");
+			GDS_INF("\tEntering boundary of type %s\n", rec_type==BOUNDARY ? "polygon" : "box");
 			break;
 		case SREF:
 			if (current_cell == NULL) {
@@ -780,6 +887,7 @@ int parse_gds_from_file(const char *filename, GList **library_list)
 			}
 			current_cell->child_cells = append_cell_ref(current_cell->child_cells,
 								    &current_s_reference);
+			current_cell->stats.reference_count++;
 			if (current_cell->child_cells == NULL) {
 				GDS_ERROR("Memory allocation failed");
 				run = -4;
@@ -805,8 +913,13 @@ int parse_gds_from_file(const char *filename, GList **library_list)
 			break;
 		case ENDEL:
 			if (current_graphics != NULL) {
-				GDS_INF("\tLeaving %s\n", (current_graphics->gfx_type == GRAPHIC_POLYGON ? "boundary" : "path"));
+				GDS_INF("\tLeaving %s\n", (current_graphics->gfx_type == GRAPHIC_POLYGON ? "boundary"
+							: (current_graphics->gfx_type == GRAPHIC_PATH ? "path"
+							: "box")));
 				current_graphics = NULL;
+				if (current_cell) {
+					current_cell->stats.gfx_count++;
+				}
 			}
 			if (current_s_reference != NULL) {
 				GDS_INF("\tLeaving Reference\n");
@@ -824,11 +937,11 @@ int parse_gds_from_file(const char *filename, GList **library_list)
 
 			} else if (current_s_reference) {
 				if (rec_data_length != 8) {
-					GDS_WARN("Instance has weird coordinates. Rendered output might be screwed!");
+					GDS_WARN("Instance has weird coordinates. Rendered output might be wrong!");
 				}
 			} else if (current_a_reference) {
 				if (rec_data_length != (3*(4+4)))
-					GDS_WARN("Array instance has weird coordinates. Rendered output might be screwed!");
+					GDS_WARN("Array instance has weird coordinates. Rendered output might be wrong!");
 			}
 			break;
 		case AREF:
@@ -867,6 +980,7 @@ int parse_gds_from_file(const char *filename, GList **library_list)
 		case LIBNAME:
 		case SNAME:
 		case LAYER:
+		case DATATYPE:
 		case STRNAME:
 			break;
 		default:
@@ -955,7 +1069,9 @@ int parse_gds_from_file(const char *filename, GList **library_list)
 					current_graphics->vertices =
 							append_vertex(current_graphics->vertices, x, y);
 					GDS_INF("\t\tSet coordinate: %d/%d\n", x, y);
-
+					if (current_cell) {
+						current_cell->stats.vertex_count++;
+					}
 				}
 			} else if (current_a_reference) {
 				for (i = 0; i < 3; i++) {
@@ -1003,6 +1119,16 @@ int parse_gds_from_file(const char *filename, GList **library_list)
 			}
 			GDS_INF("\t\tAdded layer %d\n", (int)current_graphics->layer);
 			break;
+		case DATATYPE:
+			if (!current_graphics) {
+				GDS_WARN("Datatype has to be defined inside graphics object. Probably unknown object. Implement it yourself!");
+				break;
+			}
+			current_graphics->datatype = gds_convert_signed_int16(workbuff);
+			if (current_graphics->datatype < 0)
+				GDS_WARN("Datatype negative!");
+			GDS_INF("\t\tAdded datatype %d\n", (int)current_graphics->datatype);
+			break;
 		case MAG:
 			if (rec_data_length != 8) {
 				GDS_WARN("Magnification is not an 8 byte real. Results may be wrong");
@@ -1061,8 +1187,13 @@ int parse_gds_from_file(const char *filename, GList **library_list)
 	if (!run) {
 		/* Iterate and find references to cells */
 		g_list_foreach(lib_list, scan_library_references, NULL);
+
+		/* Calculate lib stats and cummulative total counts */
+		g_list_foreach(lib_list, calc_library_stats, NULL);
 	}
 
+
+
 	*library_list = lib_list;
 
 	free(workbuff);

gds-utils/gds-statistics.c

@@ -0,0 +1,93 @@
+/*
+ * GDSII-Converter
+ * Copyright (C) 2018  Mario Hüttel <mario.huettel@gmx.net>
+ *
+ * This file is part of GDSII-Converter.
+ *
+ * GDSII-Converter is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * GDSII-Converter is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GDSII-Converter.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * @file gds-statistics.c
+ * @brief Statistics of GDS files
+ * @author Mario Hüttel <mario.huettel@gmx.net>
+ *
+ */
+
+#include <gds-render/gds-utils/gds-statistics.h>
+#include <stdio.h>
+
+/**
+ * @addtogroup GDS-Utilities
+ * @{
+ */
+
+#define MAX_RECURSION_DEPTH (1024)
+
+static void calculate_vertex_gfx_count_cell(struct gds_cell *cell, unsigned int recursion_depth)
+{
+	GList *cell_iter;
+	struct gds_cell_instance *cell_ref;
+	struct gds_cell *sub_cell;
+
+	g_return_if_fail(cell);
+
+	/* Check if cell has already been calculated */
+	if (cell->stats.total_gfx_count && cell->stats.total_vertex_count) {
+		/* Return. This cell and all of its subcells have been calculated */
+		return;
+	}
+
+	/* Update with own vertex / GFX count */
+	cell->stats.total_vertex_count = cell->stats.vertex_count;
+	cell->stats.total_gfx_count = cell->stats.gfx_count;
+
+	/* Do not analyze further, if maximum recursion depth is reached */
+	if (!recursion_depth)
+		return;
+
+	for (cell_iter = cell->child_cells; cell_iter; cell_iter = g_list_next(cell_iter)) {
+		/* Scan all subcells recursively, if there are any */
+
+		cell_ref = (struct gds_cell_instance *)cell_iter->data;
+		sub_cell = (struct gds_cell *)cell_ref->cell_ref;
+
+		calculate_vertex_gfx_count_cell(sub_cell, recursion_depth - 1);
+
+		/* Increment count */
+		cell->stats.total_vertex_count += sub_cell->stats.total_vertex_count;
+		cell->stats.total_gfx_count += sub_cell->stats.total_vertex_count;
+	}
+
+}
+
+
+void gds_statistics_calc_cummulative_counts_in_lib(struct gds_library *lib)
+{
+	GList *cell_iter;
+	struct gds_cell *cell;
+
+	g_return_if_fail(lib);
+
+	for (cell_iter = lib->cells; cell_iter; cell_iter = g_list_next(cell_iter)) {
+		cell = (struct gds_cell *)cell_iter->data;
+		calculate_vertex_gfx_count_cell(cell, MAX_RECURSION_DEPTH);
+		lib->stats.vertex_count += cell->stats.vertex_count;
+		lib->stats.cell_count++;
+		lib->stats.gfx_count += cell->stats.gfx_count;
+		lib->stats.reference_count += cell->stats.reference_count;
+	}
+}
+
+
+/** @} */

geometric/bounding-box.c

@@ -37,7 +37,7 @@
 #define MAX(a, b) (((a) > (b)) ? (a) : (b)) /**< @brief Return bigger number */
 #define ABS_DBL(a) ((a) < 0 ? -(a) : (a))
 
-void bounding_box_calculate_polygon(GList *vertices, conv_generic_to_vector_2d_t conv_func, union bounding_box *box)
+void bounding_box_calculate_from_polygon(GList *vertices, conv_generic_to_vector_2d_t conv_func, union bounding_box *box)
 {
 	double xmin = DBL_MAX, xmax = -DBL_MAX, ymin = DBL_MAX, ymax = -DBL_MAX;
 	struct vector_2d temp_vec;
@@ -68,7 +68,7 @@ void bounding_box_calculate_polygon(GList *vertices, conv_generic_to_vector_2d_t
 	box->vectors.upper_right.y = ymax;
 }
 
-void bounding_box_update_box(union bounding_box *destination, union bounding_box *update)
+void bounding_box_update_with_box(union bounding_box *destination, union bounding_box *update)
 {
 	if (!destination || !update)
 		return;
@@ -151,8 +151,6 @@ void bounding_box_update_with_path(GList *vertices, double thickness,
 	GList *vertex_iterator;
 	struct vector_2d pt;
 
-	/* printf("Warning! Function %s not yet implemented correctly!\n", __func__); */
-
 	if (!vertices || !box)
 		return;
 
@@ -173,7 +171,7 @@ void bounding_box_update_with_path(GList *vertices, double thickness,
 	}
 }
 
-void bounding_box_update_point(union bounding_box *destination, conv_generic_to_vector_2d_t conv_func, void *pt)
+void bounding_box_update_with_point(union bounding_box *destination, conv_generic_to_vector_2d_t conv_func, void *pt)
 {
 	struct vector_2d point;
 
@@ -224,7 +222,7 @@ void bounding_box_apply_transform(double scale, double rotation_deg, bool flip_a
 		vector_2d_rotate(&input_points[i], rotation_deg * M_PI / 180.0);
 		vector_2d_scale(&input_points[i], scale);
 
-		bounding_box_update_point(box, NULL, &input_points[i]);
+		bounding_box_update_with_point(box, NULL, &input_points[i]);
 	}
 }
 

geometric/cell-geometrics.c

@@ -53,7 +53,7 @@ static void update_box_with_gfx(union bounding_box *box, struct gds_graphics *gf
 	case GRAPHIC_BOX:
 		/* Expected fallthrough */
 	case GRAPHIC_POLYGON:
-		bounding_box_calculate_polygon(gfx->vertices,
+		bounding_box_calculate_from_polygon(gfx->vertices,
 							(conv_generic_to_vector_2d_t)&convert_gds_point_to_2d_vector,
 							&current_box);
 		break;
@@ -74,7 +74,7 @@ static void update_box_with_gfx(union bounding_box *box, struct gds_graphics *gf
 	}
 
 	/* Update box with results */
-	bounding_box_update_box(box, &current_box);
+	bounding_box_update_with_box(box, &current_box);
 }
 
 void calculate_cell_bounding_box(union bounding_box *box, struct gds_cell *cell)
@@ -113,7 +113,7 @@ void calculate_cell_bounding_box(union bounding_box *box, struct gds_cell *cell)
 		temp_box.vectors.upper_right.y += sub_cell->origin.y;
 
 		/* update the parent's box */
-		bounding_box_update_box(box, &temp_box);
+		bounding_box_update_with_box(box, &temp_box);
 	}
 }
 

geometric/vector-operations.c

@@ -65,7 +65,7 @@ void vector_2d_rotate(struct vector_2d *vec, double angle)
 	sin_val = sin(angle);
 	cos_val = cos(angle);
 
-	vector_2d_copy(&temp, vec);
+	(void)vector_2d_copy(&temp, vec);
 
 	/* Apply rotation matrix */
 	vec->x = (cos_val * temp.x) - (sin_val * temp.y);

include/gds-render/cell-selector/cell-statistics-renderer.h

@@ -0,0 +1,56 @@
+/*
+ * GDSII-Converter
+ * Copyright (C) 2022  Mario Hüttel <mario.huettel@gmx.net>
+ *
+ * This file is part of GDSII-Converter.
+ *
+ * GDSII-Converter is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * GDSII-Converter is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GDSII-Converter.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * @file cell-statistics-renderer.h
+ * @brief Header file for the CellStatisticsRenderer GObject Class
+ * @author Mario Hüttel <mario.huettel@gmx.net>
+ */
+
+/**
+ * @addtogroup CellStatisticsRenderer
+ * @{
+ */
+
+#ifndef _CELL_STATISTICS_RENDERER_H_
+#define _CELL_STATISTICS_RENDERER_H_
+
+#include <gtk/gtk.h>
+#include <gds-render/gds-utils/gds-statistics.h>
+
+G_BEGIN_DECLS
+
+G_DECLARE_FINAL_TYPE(CellStatisticsRenderer, cell_statistics_renderer, GDS_RENDER, CELL_STAT_RENDERER, GtkCellRendererText)
+#define TYPE_GDS_RENDER_CELL_STAT_RENDERER (cell_statistics_renderer_get_type())
+
+typedef struct _CellStatisticsRenderer {
+    GtkCellRendererText super;
+} CellStatisticsRenderer;
+
+/**
+ * @brief New Cell statistics renderer
+ * @return GObject
+ */
+GtkCellRenderer *cell_statistics_renderer_new(void);
+
+G_END_DECLS
+
+#endif /* _CELL_STATISTICS_RENDERER_H_ */
+
+/** @} */

include/gds-render/command-line.h

@@ -71,6 +71,14 @@ int command_line_convert_gds(const char *gds_name,
 			     gboolean tex_layers,
 			     double scale);
 
+/**
+ * @brief Analyze the given GDS file
+ * @param format Output format of the analysis result
+ * @param gds_name GDS file name
+ * @return 0 if successful
+ */
+int command_line_analyze_lib(const char *format, const char *gds_name);
+
 #endif /* _COMMAND_LINE_H_ */
 
 /** @} */

include/gds-render/gds-utils/gds-parser.h

@@ -48,9 +48,11 @@
  *
  * @param[in] filename Path to the GDS file
  * @param[in,out] library_array GList Pointer.
+ * @param[in] parsing_options Parsing options.
  * @return 0 if successful
  */
-int parse_gds_from_file(const char *filename, GList **library_array);
+int parse_gds_from_file(const char *filename, GList **library_array,
+                        const struct gds_library_parsing_opts *parsing_options);
 
 /**
  * @brief Deletes all libraries including cells, references etc.

include/gds-render/gds-utils/gds-statistics.h

@@ -0,0 +1,42 @@
+/*
+ * GDSII-Converter
+ * Copyright (C) 2018  Mario Hüttel <mario.huettel@gmx.net>
+ *
+ * This file is part of GDSII-Converter.
+ *
+ * GDSII-Converter is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * GDSII-Converter is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GDSII-Converter.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * @file gds-parser.h
+ * @brief Header file for the GDS statistics
+ * @author Mario Hüttel <mario.huettel@gmx.net>
+ */
+
+#ifndef _GDS_STATISTICS_H_
+#define _GDS_STATISTICS_H_
+
+/**
+ * @addtogroup GDS-Utilities
+ * @{
+ */
+
+#include <glib.h>
+
+#include <gds-render/gds-utils/gds-types.h>
+
+void gds_statistics_calc_cummulative_counts_in_lib(struct gds_library *lib);
+
+/** @} */
+
+#endif				/* _GDS_STATISTICS_H_ */

include/gds-render/gds-utils/gds-types.h

@@ -65,6 +65,22 @@ struct gds_point {
 	int y;
 };
 
+struct gds_cell_statistics {
+    size_t gfx_count;
+    size_t vertex_count;
+    size_t total_vertex_count;
+    size_t total_gfx_count;
+    size_t reference_count;
+};
+
+struct gds_lib_statistics {
+    size_t gfx_count;
+    size_t vertex_count;
+    size_t reference_count;
+    size_t cell_count;
+};
+
+
 /**
  * @brief Stores the result of the cell checks.
  */
@@ -101,7 +117,7 @@ struct gds_graphics {
 	enum path_type path_render_type; /**< @brief Line cap */
 	int width_absolute; /**< @brief Width. Not used for objects other than paths */
 	int16_t layer; /**< @brief Layer the graphic object is on */
-	uint16_t datatype;
+	int16_t datatype; /**< @brief Data type of graphic object */
 };
 
 /**
@@ -127,6 +143,14 @@ struct gds_cell {
 	GList *graphic_objs; /**< @brief List of #gds_graphics */
 	struct gds_library *parent_library; /**< @brief Pointer to parent library */
 	struct gds_cell_checks checks; /**< @brief Checking results */
+    struct gds_cell_statistics stats; /**< @brief Optional statistic info */
+};
+
+/**
+ * @brief Options, hwo this liobrary was parsed.
+ */
+struct gds_library_parsing_opts {
+    int simplified_polygons; /**< @brief Polygons have been simplified. Coincident end point removed. */
 };
 
 /**
@@ -136,11 +160,14 @@ struct gds_library {
 	char name[CELL_NAME_MAX];
 	struct gds_time_field mod_time;
 	struct gds_time_field access_time;
+    struct gds_library_parsing_opts parsing_opts;
 	double unit_in_meters;  /**< Length of a database unit in meters */
 	GList *cells; /**< List of #gds_cell that contains all cells in this library*/
 	GList *cell_names /**< List of strings that contains all cell names */;
+    struct gds_lib_statistics stats;
 };
 
+
 /** @} */
 
 #endif /* __GDS_TYPES_H__ */

include/gds-render/geometric/bounding-box.h

@@ -35,15 +35,44 @@
 #include <gds-render/geometric/vector-operations.h>
 #include <stdbool.h>
 
+/**
+ * @brief Union describing a bounding box
+ *
+ * Two ways of accessing a bounding box are possible.
+ *
+ * Either, use the "named" vectors struct to specifically access the points
+ * @code
+ * 	lower_left = box.vectors.lower_left;
+ * 	upper right = box.vectors.upper_right;
+ * @endcode
+ *
+ * or use the iterable vector array:
+ * @code
+ * 	for (i = 0; i < 2; i++)
+ * 		box.vector_array[i] = points[i];
+ * @endcode
+ */
 union bounding_box {
-	/** Coordinate System is (y up | x right) */
+	/**
+	 * @brief Location vectors of upper right and lower left bounding box points
+	 * @note Coordinate System is (y up | x right)
+	 */
 	struct _vectors {
+		/** @brief Lower left point of the bounding box */
 		struct vector_2d lower_left;
+		/** @brief Upper right point of the bounding box */
 		struct vector_2d upper_right;
 	} vectors;
+	/**
+	 * @brief Array of vectors representing a bounding box
+	 * @note This is more convenient for iterating
+	 */
 	struct vector_2d vector_array[2];
 };
 
+/*
+ * @brief Pointer to a function that takes any pointer and converts this object to a vector_2d struct
+ */
 typedef void (*conv_generic_to_vector_2d_t)(void *, struct vector_2d *);
 
 /**
@@ -52,14 +81,14 @@ typedef void (*conv_generic_to_vector_2d_t)(void *, struct vector_2d *);
  * @param conv_func Conversion function to convert vertices to vector_2d structs.
  * @param box Box to write to. This box is not updated! All previous data is discarded
  */
-void bounding_box_calculate_polygon(GList *vertices, conv_generic_to_vector_2d_t conv_func, union bounding_box *box);
+void bounding_box_calculate_from_polygon(GList *vertices, conv_generic_to_vector_2d_t conv_func, union bounding_box *box);
 
 /**
  * @brief Update an exisitng bounding box with another one.
  * @param destination Target box to update
  * @param update Box to update the target with
  */
-void bounding_box_update_box(union bounding_box *destination, union bounding_box *update);
+void bounding_box_update_with_box(union bounding_box *destination, union bounding_box *update);
 
 /**
  * @brief Prepare an empty bounding box.
@@ -76,7 +105,7 @@ void bounding_box_prepare_empty(union bounding_box *box);
  * @param conv_func Conversion function to convert \p pt to a vector_2d. May be NULL
  * @param pt Point to update bounding box with
  */
-void bounding_box_update_point(union bounding_box *destination, conv_generic_to_vector_2d_t conv_func, void *pt);
+void bounding_box_update_with_point(union bounding_box *destination, conv_generic_to_vector_2d_t conv_func, void *pt);
 
 /**
  * @brief Return all four corner points of a bounding box
@@ -102,7 +131,7 @@ void bounding_box_get_all_points(struct vector_2d *points, union bounding_box *b
  * @param rotation_deg Rotation of bounding box around the origin in degrees (counterclockwise)
  * @param flip_at_x Flip the boundig box on the x axis before rotating.
  * @param box Bounding box the operations should be applied to.
- * @note Keep in mind, that this bounding boxy is actually the bounding box of the rotated boundig box and not the object itself.
+ * @note Keep in mind, that this bounding box is actually the bounding box of the rotated boundig box and not the object itself.
  *       It might be too big.
  */
 void bounding_box_apply_transform(double scale, double rotation_deg, bool flip_at_x, union bounding_box *box);
@@ -113,6 +142,9 @@ void bounding_box_apply_transform(double scale, double rotation_deg, bool flip_a
  * @param thickness Thisckness of the path
  * @param conv_func Conversion function for vertices to vector_2d structs
  * @param box Bounding box to write results in.
+ * @warning This function is not yet implemented correctly. Miter points of paths are not taken into account.
+ *		If a path is the outmost object of your cell _and_ it is not parallel to one of the coordinate axes,
+ *		the calculated bounding box size might be off. In other cases it should be reasonable close to the real bounding box.
  */
 void bounding_box_update_with_path(GList *vertices, double thickness, conv_generic_to_vector_2d_t conv_func, union bounding_box *box);
 

include/gds-render/geometric/cell-geometrics.h

@@ -35,10 +35,17 @@
 #include <gds-render/gds-utils/gds-types.h>
 
 /**
- * @brief calculate_cell_bounding_box Calculate bounding box of gds cell
+ * @brief Calculate bounding box of a gds cell.
- * @param box Resulting boundig box. Will be uüdated and not overwritten
+ *
+ * This function updates a given bounding box with the dimensions of a
+ * gds_cell. Please note that the handling of path miter points is not complete yet.
+ * If a path object is the outmost object of your cell at any edge,
+ * the resulting bounding box might be the wrong size. The devistion from the real size
+ * is guaranteed to be within the width of the path object.
+ *
+ * @param box Resulting boundig box. Will be updated and not overwritten
  * @param cell Toplevel cell
- * @warning Path handling not yet implemented correctly.
+ * @warning Handling of Path graphic objects not yet implemented correctly.
  */
 void calculate_cell_bounding_box(union bounding_box *box, struct gds_cell *cell);
 

include/gds-render/layer/layer-selector.h

@@ -130,6 +130,13 @@ void layer_selector_auto_name_layers(LayerSelector *layer_selector, gboolean ove
  */
 gboolean layer_selector_contains_elements(LayerSelector *layer_selector);
 
+/**
+ * @brief Get number of layer elements that are named
+ * @param[in] layer_selector Layer selector
+ * @return Number of layers with a name != NULL or != ""
+ */
+size_t layer_selector_num_of_named_elements(LayerSelector *layer_selector);
+
 G_END_DECLS
 
 #endif /* __LAYER_SELECTOR_H__ */

include/gds-render/layer/layer-settings.h

@@ -41,7 +41,7 @@ struct layer_info
 {
 	int layer; /**< @brief Layer number */
 	char *name; /**< @brief Layer name. */
-	int stacked_position; ///< @brief Position of layer in output @warning This parameter is not used by any renderer so far @note Lower is bottom, higher is top
+	int stacked_position; /**< @brief Position of layer in output @warning This parameter is not used by any renderer so far @note Lower is bottom, higher is top */
 	GdkRGBA color; /**< @brief RGBA color used to render this layer */
 	int render; /**< @brief true: Render to output */
 };

include/gds-render/output-renderers/cairo-renderer.h

@@ -38,7 +38,7 @@ G_DECLARE_FINAL_TYPE(CairoRenderer, cairo_renderer, GDS_RENDER, CAIRO_RENDERER,
 
 #define GDS_RENDER_TYPE_CAIRO_RENDERER (cairo_renderer_get_type())
 
-#define MAX_LAYERS (300) /**< \brief Maximum layer count the output renderer can process. Typically GDS only specifies up to 255 layers.*/
+#define MAX_LAYERS (5000) /**< \brief Maximum layer count the output renderer can process. Typically GDS only specifies up to 255 layers.*/
 
 /**
  * @brief Create new CairoRenderer for SVG output

include/gds-render/output-renderers/external-renderer-interfaces.h

@@ -1,3 +1,22 @@
+/*
+ * GDSII-Converter
+ * Copyright (C) 2018  Mario Hüttel <mario.huettel@gmx.net>
+ *
+ * This file is part of GDSII-Converter.
+ *
+ * GDSII-Converter is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * GDSII-Converter is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GDSII-Converter.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #ifndef __EXTERNAL_RENDERER_INTERFACES_H__
 #define __EXTERNAL_RENDERER_INTERFACES_H__
 

layer/color-palette.c

@@ -238,6 +238,7 @@ static void color_palette_dispose(GObject *gobj)
 	if (palette->color_array) {
 		palette->color_array_length = 0;
 		free(palette->color_array);
+		palette->color_array = NULL;
 	}
 
 	/* Chain up to parent class */

layer/layer-selector.c

@@ -822,12 +822,10 @@ void layer_selector_auto_color_layers(LayerSelector *layer_selector, ColorPalett
 	unsigned int color_count;
 	GdkRGBA color;
 
-	if (GDS_RENDER_IS_COLOR_PALETTE(palette) == FALSE || LAYER_IS_SELECTOR(layer_selector) == FALSE)
+	g_return_if_fail(GDS_RENDER_IS_COLOR_PALETTE(palette));
-		return;
+	g_return_if_fail(LAYER_IS_SELECTOR(layer_selector));
-	if (global_alpha <= 0)
+	g_return_if_fail(global_alpha > 0);
-		return;
+	g_return_if_fail(GTK_IS_LIST_BOX(layer_selector->list_box));
-	if (GTK_IS_LIST_BOX(layer_selector->list_box) == FALSE)
-		return;
 
 	le_list = gtk_container_get_children(GTK_CONTAINER(layer_selector->list_box));
 
@@ -898,4 +896,31 @@ gboolean layer_selector_contains_elements(LayerSelector *layer_selector)
 	return (layer_element_list ? TRUE : FALSE);
 }
 
+size_t layer_selector_num_of_named_elements(LayerSelector *layer_selector)
+{
+	GList *le_list;
+	GList *le_list_ptr;
+	LayerElement *le;
+	const char *layer_name;
+	size_t count = 0U;
+
+	g_return_val_if_fail(LAYER_IS_SELECTOR(layer_selector), 0U);
+
+	le_list = gtk_container_get_children(GTK_CONTAINER(layer_selector->list_box));
+
+	for (le_list_ptr = le_list; le_list_ptr != NULL; le_list_ptr = g_list_next(le_list_ptr)) {
+		le = LAYER_ELEMENT(le_list_ptr->data);
+		if (!le)
+			continue;
+		layer_name = layer_element_get_name(le);
+
+		if (layer_name && *layer_name) {
+			/* Layer name is not empty. Count it */
+			count++;
+		}
+	}
+
+	return count;
+}
+
 /** @} */

main.c

@@ -96,6 +96,11 @@ static void app_about(GSimpleAction *action, GVariant *parameter, gpointer user_
 	comment_text = g_string_new(_("gds-render is a free tool for rendering GDS2 layout files into vector graphics."));
 	g_string_append_printf(comment_text, _("\n\nFull git commit: %s"), _app_git_commit);
 
+#ifdef GDS_RENDER_OPGENGL_PREVIEW
+	g_string_append_printf(comment_text, _("\nOpenGL Previev: Availabe"));
+#else
+	g_string_append_printf(comment_text, _("\nOpenGL Previev: Unavailabe"));
+#endif
 	builder = gtk_builder_new_from_resource("/gui/about.glade");
 	dialog = GTK_DIALOG(gtk_builder_get_object(builder, "about-dialog"));
 	gtk_window_set_transient_for(GTK_WINDOW(dialog), NULL);
@@ -262,6 +267,8 @@ int main(int argc, char **argv)
 	gchar *cellname = NULL;
 	gchar **renderer_args = NULL;
 	gboolean version = FALSE, pdf_standalone = FALSE, pdf_layers = FALSE;
+	gboolean analyze = FALSE;
+	gchar *format = NULL;
 	int scale = 1000;
 	int app_status = 0;
 	struct external_renderer_params so_render_params;
@@ -275,6 +282,8 @@ int main(int argc, char **argv)
 
 	GOptionEntry entries[] = {
 		{"version", 'v', 0, G_OPTION_ARG_NONE, &version, _("Print version"), NULL},
+		{"analyze", 'A', 0, G_OPTION_ARG_NONE, &analyze, _("Anaylze GDS file"), NULL},
+		{"format", 'f', 0, G_OPTION_ARG_STRING, &format, _("Output format of analysis result, Default simple"), "[simple | pretty | cellsonly]"},
 		{"renderer", 'r', 0, G_OPTION_ARG_STRING_ARRAY, &renderer_args,
 			_("Renderer to use. Can be used multiple times."), "pdf|svg|tikz|ext"},
 		{"scale", 's', 0, G_OPTION_ARG_INT, &scale, _("Divide output coordinates by <SCALE>"), "<SCALE>" },
@@ -320,10 +329,13 @@ int main(int argc, char **argv)
 		for (i = 2; i < argc; i++)
 			printf(_("Ignored argument: %s"), argv[i]);
 
-		app_status =
+		if (analyze) {
-			command_line_convert_gds(gds_name, cellname, renderer_args, output_paths, mappingname,
+			app_status = command_line_analyze_lib(format, gds_name);
-						 &so_render_params, pdf_standalone, pdf_layers, scale);
+		} else {
-
+			app_status =
+				command_line_convert_gds(gds_name, cellname, renderer_args, output_paths, mappingname,
+							 &so_render_params, pdf_standalone, pdf_layers, scale);
+		}
 	} else {
 		app_status = start_gui(argc, argv);
 	}

output-renderers/cairo-renderer.c

@@ -275,12 +275,20 @@ static int cairo_renderer_render_cell_to_vector_file(GdsOutputRenderer *renderer
 		goto ret_parent;
 	}
 
-	/* Close stdin and (stdout and stderr may live on) */
+	/* We are now in a separate process just for rendering the output image.
+     * You may print a log message to the activity bar of the gui by writing a line
+     * teminated with '\n' to comm_pipe[1]. This will be handled by the parent process.
+     * Directly calling the update function 
+     *     gds_output_renderer_update_async_progress()
+     * does not have any effect because this is a separate process.
+     */
+  
+	/*
+     * Close stdin and (stdout and stderr may live on)
+     */
 	close(0);
-	//close(1);
 	close(comm_pipe[0]);
 
-
 	layers = (struct cairo_layer *)calloc(MAX_LAYERS, sizeof(struct cairo_layer));
 
 	/* Clear layers */
@@ -363,8 +371,6 @@ static int cairo_renderer_render_cell_to_vector_file(GdsOutputRenderer *renderer
 	for (info_list = layer_infos; info_list != NULL; info_list = g_list_next(info_list)) {
 		linfo = (struct layer_info *)info_list->data;
 
-		dprintf(comm_pipe[1], _("Exporting layer %d to file\n"), linfo->layer);
-
 		if (linfo->layer >= MAX_LAYERS) {
 			printf(_("Layer outside of spec.\n"));
 			continue;
@@ -373,6 +379,8 @@ static int cairo_renderer_render_cell_to_vector_file(GdsOutputRenderer *renderer
 		if (!linfo->render)
 			continue;
 
+		dprintf(comm_pipe[1], _("Exporting layer %d to file\n"), linfo->layer);
+
 		if (pdf_file && pdf_cr) {
 			cairo_set_source_surface(pdf_cr, layers[linfo->layer].rec, -xmin, -ymin);
 			cairo_paint_with_alpha(pdf_cr, linfo->color.alpha);

output-renderers/gds-output-renderer.c

@@ -100,6 +100,11 @@ static void gds_output_renderer_dispose(GObject *self_obj)
 	if (priv->output_file)
 		g_free(priv->output_file);
 
+	if (priv->idle_function_parameters.status_message) {
+		g_free(priv->idle_function_parameters.status_message);
+		priv->idle_function_parameters.status_message = NULL;
+	}
+
 	g_clear_object(&priv->layer_settings);
 
 	/* Chain up to parent class */

output-renderers/latex-renderer.c

@@ -370,7 +370,7 @@ static int latex_renderer_render_output(GdsOutputRenderer *renderer,
 						l_renderer->pdf_layers, l_renderer->tex_standalone, renderer);
 		fclose(tex_file);
 	} else {
-		g_error(_("Could not open LaTeX output file"));
+        g_warning(_("Could not open LaTeX output file"));
 	}
 
 	if (settings)

plugins/CMakeLists.txt

@@ -1,2 +1,3 @@
 add_subdirectory(plugin-example)
 add_custom_target(plugins DEPENDS pluginexample)
+cmake_minimum_required(VERSION 3.0)

plugins/plugin-example/CMakeLists.txt

@@ -1,5 +1,5 @@
 project(pluginexample)
-cmake_minimum_required(VERSION 2.8)
+cmake_minimum_required(VERSION 3.0)
 find_package(PkgConfig REQUIRED)
 pkg_search_module(PYTHON REQUIRED python3)
 

preview-rendering/CMakeLists.txt

@@ -0,0 +1,18 @@
+project(opengl-preview)
+cmake_minimum_required(VERSION 3.0)
+
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(EPOXY REQUIRED epoxy)
+pkg_search_module(GLIB REQUIRED glib-2.0)
+pkg_check_modules(GTK3 REQUIRED gtk+-3.0)
+
+aux_source_directory("src" SRCS)
+
+add_subdirectory(poly2tri-wrapper)
+
+add_library(${PROJECT_NAME} STATIC ${SRCS})
+target_include_directories(${PROJECT_NAME} PUBLIC "include")
+target_include_directories(${PROJECT_NAME} PRIVATE ${EPOXY_INCLUDE_DIRS} ${GLIB_INCLUDE_DIRS} ${GTK3_INCLUDE_DIRS})
+target_link_directories(${PROJECT_NAME} PUBLIC ${EPOXY_LINK_DIRS} ${GLIB_LINK_DIRS} ${GTK3_LINK_DIRS})
+target_link_libraries(${PROJECT_NAME} ${GLIB_LDFLAGS} ${EPOXY_LDFLAGS} ${GTK3_LDFLAGS} poly2tri-wrapper)
+

preview-rendering/include/preview-rendering/preview-rendering-gui.h

@@ -0,0 +1,14 @@
+#ifndef _PREVIEW_RENDERING_GUI_H_
+#define _PREVIEW_RENDERING_GUI_H_
+
+#include <gtk/gtk.h>
+
+G_DECLARE_FINAL_TYPE(OpenGlPreviewGui, opengl_preview_gui, GDS_RENDER, OPENGL_PREVIEW_GUI, GObject)
+
+#define TYPE_GDS_RENDER_OPENGL_PREVIEW_GUI (opengl_preview_gui_get_type())
+
+OpenGlPreviewGui *opengl_preview_gui_new(void);
+
+void opengl_preview_gui_show(OpenGlPreviewGui *self);
+
+#endif /* _PREVIEW_RENDERING_GUI_H_ */

preview-rendering/poly2tri-wrapper/CMakeLists.txt

@@ -0,0 +1,11 @@
+project(poly2tri-wrapper LANGUAGES CXX)
+cmake_minimum_required(VERSION 3.12)
+
+add_subdirectory(../../3rdparty/poly2tri poly2tri)
+set(CMAKE_CXX_STANDARD 14)
+
+aux_source_directory("src" WRAPPER_SOURCES)
+
+add_library(${PROJECT_NAME} STATIC ${WRAPPER_SOURCES})
+target_link_libraries(${PROJECT_NAME} poly2tri)
+target_include_directories(${PROJECT_NAME} PUBLIC "include")

preview-rendering/poly2tri-wrapper/include/poly2tri-wrapper/poly2tri-wrapper.h

@@ -0,0 +1,16 @@
+#ifndef _POLY2TRI_WRAPPER_H_
+#define _POLY2TRI_WRAPPER_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <gds-render/gds-utils/gds-types.h>
+
+int tesselator_triangulate_polygon(const struct gds_graphics *gfx, double scale, float **output_vertices, size_t *vertex_count);
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /* _POLY2TRI_WRAPPER_H_ */

preview-rendering/poly2tri-wrapper/src/poly2tri-wrapper.cpp

@@ -0,0 +1,132 @@
+#include <iostream>
+#include <poly2tri/poly2tri.h>
+#include <poly2tri-wrapper/poly2tri-wrapper.h>
+//#include <gds-render/gds-utils/gds-types.h>
+#include <vector>
+
+class Hole {
+private:
+	std::vector <p2t::Point *> hole_vertices;
+public:
+	const std::vector <p2t::Point *> &get_vertices()
+	{
+		return hole_vertices;
+	}
+
+	void add_vertex(const p2t::Point &point)
+	{
+		auto pt = new p2t::Point(point);
+		hole_vertices.push_back(pt);
+	}
+
+	Hole(std::vector<p2t::Point *>::iterator start, std::vector<p2t::Point *>::iterator end)
+	{
+		hole_vertices = std::vector<p2t::Point *>(start, end);
+	}
+
+};
+
+
+static std::vector<Hole> resolve_holes_in_polyline(std::vector<p2t::Point *> &polyline)
+{
+	bool found = false;
+	std::vector<Hole> holes;
+	std::vector<std::pair<
+			std::vector<p2t::Point *>::iterator,
+			std::vector<p2t::Point *>::iterator>
+			> points_to_remove;
+
+	for (auto start_it = polyline.begin(); start_it != polyline.end(); start_it++) {
+		for (auto check_it = std::next(start_it); check_it != polyline.end(); check_it++) {
+			/* Check if points are equal */
+			if (**start_it == **check_it) {
+				if (**std::prev(check_it) == **std::next(start_it)) {
+					/* Found a hole. Everything between start_it and check_it can be removed */
+					auto hole = Hole(std::next(start_it)+1, check_it);
+					holes.push_back(hole);
+					auto tbd = std::make_pair(start_it, check_it);
+					points_to_remove.push_back(tbd);
+					found = true;
+					break;
+				}
+			}
+		}
+		if (found)
+			break;
+	}
+
+	/* Remove form polyline */
+	for (auto it_pair_it = points_to_remove.begin(); it_pair_it != points_to_remove.end(); it_pair_it++) {
+		auto it_pair = *it_pair_it;
+		delete *it_pair.first;
+		delete *std::next(it_pair.first);
+		polyline.erase(it_pair.first, it_pair.second);
+	}
+
+	if (found) {
+		auto new_holes = resolve_holes_in_polyline(polyline);
+		holes.insert(holes.end(), new_holes.begin(), new_holes.end());
+	}
+
+
+	return holes;
+}
+
+int tesselator_triangulate_polygon(const struct gds_graphics *gfx, double scale, float** output_vertices, size_t *vertex_count)
+{
+	GList *vertex_iter;
+	std::vector<p2t::Point*> polyline;
+
+	if (gfx->gfx_type != GRAPHIC_POLYGON)
+		return -1;
+
+	for (vertex_iter = gfx->vertices; vertex_iter; vertex_iter = g_list_next(vertex_iter)) {
+		struct gds_point *gds_pt = (struct gds_point *)vertex_iter->data;
+		auto pt = new p2t::Point((double)gds_pt->x/scale, (double)gds_pt->y/scale);
+		polyline.push_back(pt);
+	}
+
+	auto holes = resolve_holes_in_polyline(polyline);
+
+	auto my_cdt = p2t::CDT(polyline);
+
+	for (auto hole_it = holes.begin(); hole_it != holes.end(); hole_it++) {
+		my_cdt.AddHole((*hole_it).get_vertices());
+	}
+
+	my_cdt.Triangulate();
+
+	auto triangles = my_cdt.GetTriangles();
+
+
+
+	/* Free the triangles */
+	for (auto it = triangles.begin(); it != triangles.end(); it++) {
+		auto triangle = *it;
+		std::cout << "Triangle: " <<
+			     triangle->GetPoint(0)->x << "|" << triangle->GetPoint(0)->y << ","
+			  << triangle->GetPoint(1)->x << "|" << triangle->GetPoint(1)->x << ","
+			  << triangle->GetPoint(2)->x << "|" << triangle->GetPoint(2)->y
+			  << std::endl;
+	}
+
+	/* Get the amount of triangles */
+	auto count = triangles.size();
+	*output_vertices = (float *)malloc(2*sizeof(float)*3*count);
+
+	*vertex_count = count * 3;
+	/* Free the points in the vector */
+	for (unsigned int i = 0; i < count; i++) {
+		for (int j = 0; j < 3; j++) {
+			auto pt = triangles[i]->GetPoint(j);
+			unsigned int idx = i * 6 + j * 2;
+			(*output_vertices)[idx] = (float)pt->x;
+			(*output_vertices)[idx + 1] = (float)pt->y;
+		}
+	}
+
+	for (auto it = polyline.begin(); it != polyline.end(); it++)
+		delete *it;
+
+	return 0;
+}

preview-rendering/src/preview-rendering-gui.c

@@ -0,0 +1,258 @@
+#include <preview-rendering/preview-rendering-gui.h>
+#include <poly2tri-wrapper/poly2tri-wrapper.h>
+#include <epoxy/gl.h>
+
+struct _OpenGlPreviewGui {
+	GObject super;
+	GtkWindow *main_window;
+	GtkGLArea *gl_area;
+	unsigned int polygon_shader_prog;
+	unsigned int vao;
+	unsigned int vao_vertex_count;
+	unsigned int vbo;
+	float color[4];
+	gboolean line;
+};
+
+G_DEFINE_TYPE(OpenGlPreviewGui, opengl_preview_gui, G_TYPE_OBJECT)
+
+static void opengl_preview_gui_dispose(GObject *gobj)
+{
+	OpenGlPreviewGui *self;
+
+	self = GDS_RENDER_OPENGL_PREVIEW_GUI(gobj);
+
+	g_clear_object(&self->gl_area);
+
+	if (self->main_window) {
+		gtk_widget_destroy(GTK_WIDGET(self->main_window));
+		self->main_window = NULL;
+	}
+
+	G_OBJECT_CLASS(opengl_preview_gui_parent_class)->dispose(gobj);
+}
+
+static void opengl_preview_gui_class_init(OpenGlPreviewGuiClass *klass)
+{
+	GObjectClass *oclass = G_OBJECT_CLASS(klass);
+
+	oclass->dispose = opengl_preview_gui_dispose;
+}
+
+static gboolean gl_area_render(GtkGLArea *area, GdkGLContext *context, gpointer user)
+{
+	OpenGlPreviewGui *gui;
+
+	int loc;
+
+	gui = GDS_RENDER_OPENGL_PREVIEW_GUI(user);
+	gtk_gl_area_make_current(area);
+
+	glClearColor (0, 0, 0, 1.0);
+	glClear (GL_COLOR_BUFFER_BIT);
+	glPolygonMode(GL_FRONT_AND_BACK, gui->line ? GL_LINE : GL_FILL);
+	glUseProgram(gui->polygon_shader_prog);
+	glBindVertexArray(gui->vao);
+	loc = glGetUniformLocation(gui->polygon_shader_prog, "const_color");
+	glUniform4fv(loc, 1, gui->color);
+	glDrawArrays(GL_TRIANGLES, 0, gui->vao_vertex_count);
+
+	glFlush();
+
+	return TRUE;
+}
+
+static int compile_shader_from_resource(GLenum shader_type, const char *res_name, unsigned int *shader)
+{
+	int success;
+	GBytes *res_bytes;
+	const char *data;
+	gsize size;
+	int size_int;
+	int sh;
+
+	res_bytes = g_resources_lookup_data(res_name, G_RESOURCE_LOOKUP_FLAGS_NONE, NULL);
+	data = g_bytes_get_data(res_bytes, &size);
+	sh = glCreateShader(shader_type);
+	size_int = (int)size;
+	glShaderSource(sh, 1, &data, &size_int);
+	glCompileShader(sh);
+	glGetShaderiv(sh, GL_COMPILE_STATUS, &success);
+	g_bytes_unref(res_bytes);
+	if (shader)
+		*shader = sh;
+
+	return success;
+}
+
+static gboolean gl_area_realize(GtkGLArea *area, gpointer user)
+{
+	unsigned int vbo;
+	unsigned int vs;
+	unsigned int fs;
+	unsigned int prog;
+	unsigned int vao;
+	OpenGlPreviewGui *gui;
+	int success;
+	struct gds_graphics gfx;
+	struct gds_point points[20];
+	size_t vertex_count;
+
+	gui = GDS_RENDER_OPENGL_PREVIEW_GUI(user);
+
+	gui->color[0] = 0.6f;
+	gui->color[1] = 0.5f;
+	gui->color[2] = 0.12f;
+	gui->color[3] = 1.0f;
+
+	gtk_gl_area_make_current(area);
+
+	if (!compile_shader_from_resource(GL_VERTEX_SHADER, "/shaders/polygon.vs", &vs)) {
+		g_warning("Error compiling vertex shader");
+	}
+	if (!compile_shader_from_resource(GL_FRAGMENT_SHADER, "/shaders/polygon.fs", &fs)) {
+		g_warning("Error compiling fragment shader");
+	}
+
+	prog = glCreateProgram();
+	glAttachShader(prog, vs);
+	glAttachShader(prog, fs);
+	glLinkProgram(prog);
+	glGetProgramiv(prog, GL_LINK_STATUS, &success);
+	if (!success) {
+		g_warning("Error linking shader");
+	}
+	glUseProgram(prog);
+	glDeleteShader(vs);
+	glDeleteShader(fs);
+
+
+
+
+
+
+	gui->polygon_shader_prog = prog;
+
+
+	gfx.vertices = NULL;
+	points[0].x = -100;
+	points[0].y = -100;
+
+	points[1].x = -100;
+	points[1].y = +100;
+
+	points[2].x = +0;
+	points[2].y = +100;
+
+	points[3].x = +0;
+	points[3].y = 20;
+
+	points[4].x = -20;
+	points[4].y = 20;
+
+	points[5].x = -20;
+	points[5].y = -20;
+
+	points[6].x = 20;
+	points[6].y = -20;
+
+	points[7].x = 20;
+	points[7].y = 20;
+
+	points[8].x = 0;
+	points[8].y = 20;
+
+	points[9].x = 0;
+	points[9].y = 100;
+
+	points[10].x = 100;
+	points[10].y = 100;
+
+
+	points[11].x = 100;
+	points[11].y = 5;
+
+	points[12].x = 60;
+	points[12].y = 5;
+
+	points[13].x = 60;
+	points[13].y = 20;
+
+	points[14].x = 50;
+	points[14].y = 20;
+
+	points[15].x = 50;
+	points[15].y = 0;
+
+	points[16].x = 60;
+	points[16].y = 0;
+
+	points[17].x = 60;
+	points[17].y = 5;
+
+	points[18].x = 100;
+	points[18].y = 5;
+
+
+	points[19].x = 100;
+	points[19].y = -100;
+
+	gfx.gfx_type = GRAPHIC_POLYGON;
+
+	for (int i = 0; i < 20; i++) {
+		gfx.vertices = g_list_append(gfx.vertices, &points[i]);
+	}
+
+	float *vertices = NULL;
+
+	tesselator_triangulate_polygon(&gfx, 180.0, &vertices, &vertex_count);
+	gui->vao_vertex_count = vertex_count;
+
+	glGenVertexArrays(1, &vao);
+	glBindVertexArray(vao);
+	glGenBuffers(1, &vbo);
+	glBindBuffer(GL_ARRAY_BUFFER, vbo);
+	glBufferData(GL_ARRAY_BUFFER, vertex_count*2*sizeof(float), vertices, GL_STATIC_DRAW);
+	glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 2*sizeof(float), (void *)0);
+	glEnableVertexAttribArray(0);
+
+	free(vertices);
+
+	gui->vao = vao;
+	gui->vbo = vbo;
+
+	g_list_free(gfx.vertices);
+
+	return TRUE;
+
+}
+
+static void on_clicked(GtkWidget *sender, gboolean *p)
+{
+	*p = !*p;
+}
+
+static void opengl_preview_gui_init(OpenGlPreviewGui *self)
+{
+	GtkBuilder *builder;
+
+	builder = gtk_builder_new_from_resource("/gui/preview-window.glade");
+	self->main_window = GTK_WINDOW(gtk_builder_get_object(builder, "main-window"));
+	self->gl_area = GTK_GL_AREA(gtk_builder_get_object(builder, "gl-area"));
+	g_signal_connect(self->gl_area, "render", G_CALLBACK(gl_area_render), self);
+	g_signal_connect(self->gl_area, "realize", G_CALLBACK(gl_area_realize), self);
+
+	g_signal_connect(gtk_builder_get_object(builder, "test-button"), "clicked", G_CALLBACK(on_clicked), &self->line);
+	self->line = FALSE;
+	g_object_ref(self->gl_area);
+}
+
+OpenGlPreviewGui *opengl_preview_gui_new(void)
+{
+	return GDS_RENDER_OPENGL_PREVIEW_GUI(g_object_new(TYPE_GDS_RENDER_OPENGL_PREVIEW_GUI, NULL));
+}
+
+void opengl_preview_gui_show(OpenGlPreviewGui *self)
+{
+	gtk_widget_show(GTK_WIDGET(self->main_window));
+}

preview-rendering/src/preview-rendering.c

@@ -0,0 +1,8 @@
+#include <epoxy/gl.h>
+
+int foobar(void)
+{
+	GLuint foo;
+	glGenBuffers(1, &foo);
+	return 42;
+}

resources/layer-widget.glade

@@ -1,26 +1,26 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!-- Generated with glade 3.22.1 -->
+<!-- Generated with glade 3.38.2 -->
 <interface>
   <requires lib="gtk+" version="3.20"/>
   <object class="GtkAdjustment" id="adjustment1">
     <property name="upper">1</property>
     <property name="value">1</property>
-    <property name="step_increment">0.01</property>
+    <property name="step-increment">0.01</property>
-    <property name="page_increment">0.10000000000000001</property>
+    <property name="page-increment">0.10</property>
   </object>
   <object class="GtkBox" id="box">
     <property name="visible">True</property>
-    <property name="can_focus">False</property>
+    <property name="can-focus">False</property>
     <property name="spacing">3</property>
     <child>
       <object class="GtkEventBox" id="event-box">
         <property name="visible">True</property>
-        <property name="can_focus">False</property>
+        <property name="can-focus">False</property>
         <child>
           <object class="GtkImage">
             <property name="visible">True</property>
-            <property name="can_focus">False</property>
+            <property name="can-focus">False</property>
-            <property name="stock">gtk-justify-fill</property>
+            <property name="icon-name">open-menu-symbolic</property>
           </object>
         </child>
       </object>
@@ -33,7 +33,7 @@
     <child>
       <object class="GtkLabel" id="layer">
         <property name="visible">True</property>
-        <property name="can_focus">False</property>
+        <property name="can-focus">False</property>
         <property name="label" translatable="yes">label</property>
       </object>
       <packing>
@@ -45,9 +45,9 @@
     <child>
       <object class="GtkColorButton" id="color">
         <property name="visible">True</property>
-        <property name="can_focus">True</property>
+        <property name="can-focus">True</property>
-        <property name="receives_default">True</property>
+        <property name="receives-default">True</property>
-        <property name="use_alpha">True</property>
+        <property name="use-alpha">True</property>
         <property name="title" translatable="yes">Select Layer Color and Opacity</property>
         <property name="rgba">rgb(0,0,0)</property>
       </object>
@@ -61,9 +61,9 @@
       <object class="GtkCheckButton" id="export">
         <property name="label" translatable="yes">Export Layer</property>
         <property name="visible">True</property>
-        <property name="can_focus">True</property>
+        <property name="can-focus">True</property>
-        <property name="receives_default">False</property>
+        <property name="receives-default">False</property>
-        <property name="draw_indicator">True</property>
+        <property name="draw-indicator">True</property>
       </object>
       <packing>
         <property name="expand">False</property>
@@ -74,7 +74,7 @@
     <child>
       <object class="GtkEntry" id="entry">
         <property name="visible">True</property>
-        <property name="can_focus">True</property>
+        <property name="can-focus">True</property>
       </object>
       <packing>
         <property name="expand">True</property>

resources/main.glade

@@ -1,145 +1,57 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<!-- Generated with glade 3.22.1 -->
+<!-- Generated with glade 3.38.2 -->
 <interface>
   <requires lib="gtk+" version="3.20"/>
   <object class="GtkImage" id="auto-name-img">
     <property name="visible">True</property>
-    <property name="can_focus">False</property>
+    <property name="can-focus">False</property>
-    <property name="stock">gtk-edit</property>
+    <property name="icon-name">format-text-rich-symbolic</property>
   </object>
   <object class="GtkImage" id="color-img">
     <property name="visible">True</property>
-    <property name="can_focus">False</property>
+    <property name="can-focus">False</property>
-    <property name="stock">gtk-select-color</property>
+    <property name="icon-name">color-select-symbolic</property>
-  </object>
-  <object class="GtkImage" id="load-mapping-img">
-    <property name="visible">True</property>
-    <property name="can_focus">False</property>
-    <property name="stock">gtk-open</property>
-  </object>
-  <object class="GtkImage" id="save-mapping-img">
-    <property name="visible">True</property>
-    <property name="can_focus">False</property>
-    <property name="tooltip_text" translatable="yes">Save the current layer configuration to CSV</property>
-    <property name="stock">gtk-save-as</property>
   </object>
   <object class="GtkImage" id="select-all-img">
     <property name="visible">True</property>
-    <property name="can_focus">False</property>
+    <property name="can-focus">False</property>
-    <property name="stock">gtk-apply</property>
+    <property name="icon-name">emblem-ok-symbolic</property>
   </object>
   <object class="GtkImage" id="sort-down-img">
     <property name="visible">True</property>
-    <property name="can_focus">False</property>
+    <property name="can-focus">False</property>
-    <property name="stock">gtk-sort-ascending</property>
+    <property name="icon-name">view-sort-descending-symbolic</property>
   </object>
   <object class="GtkImage" id="sort-up-img">
     <property name="visible">True</property>
-    <property name="can_focus">False</property>
+    <property name="can-focus">False</property>
-    <property name="stock">gtk-sort-descending</property>
+    <property name="icon-name">view-sort-ascending-symbolic</property>
   </object>
   <object class="GtkWindow" id="main-window">
-    <property name="height_request">250</property>
+    <property name="height-request">250</property>
-    <property name="can_focus">False</property>
+    <property name="can-focus">False</property>
-    <property name="icon_name">gds-render</property>
+    <property name="icon-name">gds-render</property>
-    <child type="titlebar">
-      <object class="GtkHeaderBar" id="header-bar">
-        <property name="name">header</property>
-        <property name="visible">True</property>
-        <property name="can_focus">False</property>
-        <property name="title" translatable="yes">GDS-Render</property>
-        <property name="show_close_button">True</property>
-        <child>
-          <object class="GtkButton" id="button-load-gds">
-            <property name="label">gtk-open</property>
-            <property name="visible">True</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="tooltip_text" translatable="yes">Open GDS2 Database</property>
-            <property name="use_stock">True</property>
-            <property name="always_show_image">True</property>
-            <style>
-              <class name="suggested-action"/>
-            </style>
-          </object>
-        </child>
-        <child>
-          <object class="GtkButton" id="button-load-mapping">
-            <property name="label" translatable="yes">Load Mapping</property>
-            <property name="visible">True</property>
-            <property name="sensitive">False</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="tooltip_text" translatable="yes">Load the current layer configuration from CSV</property>
-            <property name="image">load-mapping-img</property>
-            <property name="always_show_image">True</property>
-            <style>
-              <class name="suggested-action"/>
-            </style>
-          </object>
-          <packing>
-            <property name="position">1</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="button-save-mapping">
-            <property name="label" translatable="yes">Save Mapping</property>
-            <property name="visible">True</property>
-            <property name="sensitive">False</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="image">save-mapping-img</property>
-            <property name="always_show_image">True</property>
-            <style>
-              <class name="suggested-action"/>
-            </style>
-          </object>
-          <packing>
-            <property name="position">2</property>
-          </packing>
-        </child>
-        <child>
-          <object class="GtkButton" id="convert-button">
-            <property name="label">gtk-convert</property>
-            <property name="name">button-convert</property>
-            <property name="visible">True</property>
-            <property name="sensitive">False</property>
-            <property name="can_focus">True</property>
-            <property name="receives_default">True</property>
-            <property name="tooltip_text" translatable="yes">Convert selected cell</property>
-            <property name="use_stock">True</property>
-            <property name="always_show_image">True</property>
-            <style>
-              <class name="suggested-action"/>
-            </style>
-          </object>
-          <packing>
-            <property name="position">3</property>
-          </packing>
-        </child>
-      </object>
-    </child>
     <child>
       <object class="GtkBox">
         <property name="visible">True</property>
-        <property name="can_focus">False</property>
+        <property name="can-focus">False</property>
         <property name="orientation">vertical</property>
         <child>
           <object class="GtkBox">
             <property name="visible">True</property>
-            <property name="can_focus">False</property>
+            <property name="can-focus">False</property>
             <child>
               <object class="GtkBox">
                 <property name="visible">True</property>
-                <property name="can_focus">False</property>
+                <property name="can-focus">False</property>
                 <property name="orientation">vertical</property>
                 <child>
                   <object class="GtkSearchEntry" id="cell-search">
                     <property name="visible">True</property>
-                    <property name="can_focus">True</property>
+                    <property name="can-focus">True</property>
-                    <property name="primary_icon_name">edit-find-symbolic</property>
+                    <property name="primary-icon-name">edit-find-symbolic</property>
-                    <property name="primary_icon_activatable">False</property>
+                    <property name="primary-icon-activatable">False</property>
-                    <property name="primary_icon_sensitive">False</property>
+                    <property name="primary-icon-sensitive">False</property>
                   </object>
                   <packing>
                     <property name="expand">False</property>
@@ -150,15 +62,15 @@
                 <child>
                   <object class="GtkScrolledWindow">
                     <property name="visible">True</property>
-                    <property name="can_focus">True</property>
+                    <property name="can-focus">True</property>
-                    <property name="hscrollbar_policy">never</property>
+                    <property name="hscrollbar-policy">never</property>
-                    <property name="shadow_type">in</property>
+                    <property name="shadow-type">in</property>
                     <child>
                       <object class="GtkTreeView" id="cell-tree">
                         <property name="visible">True</property>
-                        <property name="can_focus">True</property>
+                        <property name="can-focus">True</property>
-                        <property name="enable_search">False</property>
+                        <property name="enable-search">False</property>
-                        <property name="enable_grid_lines">both</property>
+                        <property name="enable-grid-lines">both</property>
                         <child internal-child="selection">
                           <object class="GtkTreeSelection"/>
                         </child>
@@ -181,20 +93,20 @@
             <child>
               <object class="GtkBox">
                 <property name="visible">True</property>
-                <property name="can_focus">False</property>
+                <property name="can-focus">False</property>
                 <property name="orientation">vertical</property>
                 <child>
                   <object class="GtkBox">
                     <property name="visible">True</property>
-                    <property name="can_focus">False</property>
+                    <property name="can-focus">False</property>
                     <child>
                       <object class="GtkButton" id="button-up-sort">
                         <property name="visible">True</property>
-                        <property name="can_focus">True</property>
+                        <property name="can-focus">True</property>
-                        <property name="receives_default">True</property>
+                        <property name="receives-default">True</property>
-                        <property name="tooltip_text" translatable="yes">Sort layers ascending</property>
+                        <property name="tooltip-text" translatable="yes">Sort layers ascending</property>
                         <property name="image">sort-up-img</property>
-                        <property name="always_show_image">True</property>
+                        <property name="always-show-image">True</property>
                       </object>
                       <packing>
                         <property name="expand">False</property>
@@ -205,11 +117,11 @@
                     <child>
                       <object class="GtkButton" id="button-down-sort">
                         <property name="visible">True</property>
-                        <property name="can_focus">True</property>
+                        <property name="can-focus">True</property>
-                        <property name="receives_default">True</property>
+                        <property name="receives-default">True</property>
-                        <property name="tooltip_text" translatable="yes">Sort layers descending</property>
+                        <property name="tooltip-text" translatable="yes">Sort layers descending</property>
                         <property name="image">sort-down-img</property>
-                        <property name="always_show_image">True</property>
+                        <property name="always-show-image">True</property>
                       </object>
                       <packing>
                         <property name="expand">False</property>
@@ -220,11 +132,11 @@
                     <child>
                       <object class="GtkButton" id="auto-color-button">
                         <property name="visible">True</property>
-                        <property name="can_focus">True</property>
+                        <property name="can-focus">True</property>
-                        <property name="receives_default">True</property>
+                        <property name="receives-default">True</property>
-                        <property name="tooltip_text" translatable="yes">Automatically color layers</property>
+                        <property name="tooltip-text" translatable="yes">Automatically color layers</property>
                         <property name="image">color-img</property>
-                        <property name="always_show_image">True</property>
+                        <property name="always-show-image">True</property>
                       </object>
                       <packing>
                         <property name="expand">False</property>
@@ -235,11 +147,11 @@
                     <child>
                       <object class="GtkButton" id="button-select-all">
                         <property name="visible">True</property>
-                        <property name="can_focus">True</property>
+                        <property name="can-focus">True</property>
-                        <property name="receives_default">True</property>
+                        <property name="receives-default">True</property>
-                        <property name="tooltip_text" translatable="yes">Select all layers for export</property>
+                        <property name="tooltip-text" translatable="yes">Select all layers for export</property>
                         <property name="image">select-all-img</property>
-                        <property name="always_show_image">True</property>
+                        <property name="always-show-image">True</property>
                       </object>
                       <packing>
                         <property name="expand">False</property>
@@ -250,11 +162,11 @@
                     <child>
                       <object class="GtkButton" id="button-auto-name">
                         <property name="visible">True</property>
-                        <property name="can_focus">True</property>
+                        <property name="can-focus">True</property>
-                        <property name="receives_default">True</property>
+                        <property name="receives-default">True</property>
-                        <property name="tooltip_text" translatable="yes">Automatically name layers</property>
+                        <property name="tooltip-text" translatable="yes">Automatically name layers</property>
                         <property name="image">auto-name-img</property>
-                        <property name="always_show_image">True</property>
+                        <property name="always-show-image">True</property>
                       </object>
                       <packing>
                         <property name="expand">False</property>
@@ -272,19 +184,19 @@
                 <child>
                   <object class="GtkScrolledWindow">
                     <property name="visible">True</property>
-                    <property name="can_focus">True</property>
+                    <property name="can-focus">True</property>
-                    <property name="margin_top">1</property>
+                    <property name="margin-top">1</property>
-                    <property name="hscrollbar_policy">never</property>
+                    <property name="hscrollbar-policy">never</property>
-                    <property name="shadow_type">in</property>
+                    <property name="shadow-type">in</property>
                     <child>
                       <object class="GtkViewport">
                         <property name="visible">True</property>
-                        <property name="can_focus">False</property>
+                        <property name="can-focus">False</property>
                         <child>
                           <object class="GtkListBox" id="layer-list">
                             <property name="visible">True</property>
-                            <property name="can_focus">False</property>
+                            <property name="can-focus">False</property>
-                            <property name="selection_mode">none</property>
+                            <property name="selection-mode">none</property>
                           </object>
                         </child>
                       </object>
@@ -313,7 +225,7 @@
         <child>
           <object class="GtkBox" id="activity-bar">
             <property name="visible">True</property>
-            <property name="can_focus">False</property>
+            <property name="can-focus">False</property>
             <property name="orientation">vertical</property>
             <child>
               <placeholder/>
@@ -327,5 +239,75 @@
         </child>
       </object>
     </child>
+    <child type="titlebar">
+      <object class="GtkHeaderBar" id="header-bar">
+        <property name="name">header</property>
+        <property name="visible">True</property>
+        <property name="can-focus">False</property>
+        <property name="title" translatable="yes">GDS-Render</property>
+        <property name="show-close-button">True</property>
+        <child>
+          <object class="GtkButton" id="button-load-gds">
+            <property name="label">Open GDS</property>
+            <property name="visible">True</property>
+            <property name="can-focus">True</property>
+            <property name="receives-default">True</property>
+            <property name="tooltip-text" translatable="yes">Open GDS2 Database</property>
+            <style>
+              <class name="suggested-action"/>
+            </style>
+          </object>
+        </child>
+        <child>
+          <object class="GtkButton" id="button-load-mapping">
+            <property name="label" translatable="yes">Load Mapping</property>
+            <property name="visible">True</property>
+            <property name="sensitive">False</property>
+            <property name="can-focus">True</property>
+            <property name="receives-default">True</property>
+            <property name="tooltip-text" translatable="yes">Load the current layer configuration from CSV</property>
+            <style>
+              <class name="suggested-action"/>
+            </style>
+          </object>
+          <packing>
+            <property name="position">1</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="button-save-mapping">
+            <property name="label" translatable="yes">Save Mapping</property>
+            <property name="visible">True</property>
+            <property name="sensitive">False</property>
+            <property name="can-focus">True</property>
+            <property name="receives-default">True</property>
+            <style>
+              <class name="suggested-action"/>
+            </style>
+          </object>
+          <packing>
+            <property name="position">2</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkButton" id="convert-button">
+            <property name="label">Convert Cell</property>
+            <property name="name">button-convert</property>
+            <property name="visible">True</property>
+            <property name="sensitive">False</property>
+            <property name="can-focus">True</property>
+            <property name="receives-default">True</property>
+            <property name="tooltip-text" translatable="yes">Convert selected cell</property>
+            <property name="always-show-image">True</property>
+            <style>
+              <class name="suggested-action"/>
+            </style>
+          </object>
+          <packing>
+            <property name="position">3</property>
+          </packing>
+        </child>
+      </object>
+    </child>
   </object>
 </interface>

resources/preview-window.glade

@@ -0,0 +1,43 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Generated with glade 3.38.2 -->
+<interface>
+  <requires lib="gtk+" version="3.24"/>
+  <object class="GtkWindow" id="main-window">
+    <property name="can-focus">False</property>
+    <property name="default-width">1024</property>
+    <property name="default-height">500</property>
+    <child>
+      <object class="GtkBox">
+        <property name="visible">True</property>
+        <property name="can-focus">False</property>
+        <property name="baseline-position">bottom</property>
+        <child>
+          <object class="GtkButton" id="test-button">
+            <property name="label" translatable="yes">button</property>
+            <property name="visible">True</property>
+            <property name="can-focus">True</property>
+            <property name="receives-default">True</property>
+          </object>
+          <packing>
+            <property name="expand">False</property>
+            <property name="fill">True</property>
+            <property name="position">0</property>
+          </packing>
+        </child>
+        <child>
+          <object class="GtkGLArea" id="gl-area">
+            <property name="visible">True</property>
+            <property name="app-paintable">True</property>
+            <property name="can-focus">False</property>
+            <property name="has-alpha">True</property>
+          </object>
+          <packing>
+            <property name="expand">True</property>
+            <property name="fill">True</property>
+            <property name="position">1</property>
+          </packing>
+        </child>
+      </object>
+    </child>
+  </object>
+</interface>

resources/resources.xml

@@ -5,6 +5,7 @@
 		<file compressed="true">about.glade</file>
 		<file>layer-widget.glade</file>
 		<file>dialog.glade</file>
+		<file compressed="true">preview-window.glade</file>
 	</gresource>
 	<gresource prefix="/data">
 		<file compressed="true">color-palette.txt</file>
@@ -12,6 +13,10 @@
 	<gresource prefix="/images">
 		<file compressed="true" alias="logo.svg">../icon/gds-render.svg</file>
 	</gresource>
+	<gresource prefix="/shaders">
+		<file compressed="true" alias="polygon.fs">./shaders/polygon.fs.glsl</file>
+		<file compressed="true" alias="polygon.vs">./shaders/polygon.vs.glsl</file>
+	</gresource>
 </gresources>
 
 

resources/shaders/polygon.fs.glsl

@@ -0,0 +1,9 @@
+#version 330 core
+
+out vec4 FragColor;
+in  vec4 vertex_color;
+
+void main()
+{
+	FragColor = vertex_color;
+}

resources/shaders/polygon.vs.glsl

@@ -0,0 +1,12 @@
+#version 330 core
+
+//uniform mat4 mvp;
+uniform vec4 const_color;
+
+layout (location = 0) in vec2 input_vertex;
+out vec4 vertex_color;
+void main()
+{
+	gl_Position = vec4(input_vertex.x, input_vertex.y, 0.0, 1.0);
+	vertex_color = const_color;
+}

test/CMakeLists.txt

@@ -0,0 +1,41 @@
+project(gds-render-test)
+cmake_minimum_required(VERSION 3.0)
+
+add_custom_target(test "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}" "-r compact" "-s" DEPENDS ${PROJECT_NAME})
+
+if(NOT WIN32)
+  string(ASCII 27 Esc)
+  set(ColorReset "${Esc}[m")
+  set(ColorBold  "${Esc}[1m")
+  set(Red         "${Esc}[31m")
+  set(Green       "${Esc}[32m")
+  set(Yellow      "${Esc}[33m")
+  set(Blue        "${Esc}[34m")
+  set(Magenta     "${Esc}[35m")
+  set(Cyan        "${Esc}[36m")
+  set(White       "${Esc}[37m")
+  set(BoldRed     "${Esc}[1;31m")
+  set(BoldGreen   "${Esc}[1;32m")
+  set(BoldYellow  "${Esc}[1;33m")
+  set(BoldBlue    "${Esc}[1;34m")
+  set(BoldMagenta "${Esc}[1;35m")
+  set(BoldCyan    "${Esc}[1;36m")
+  set(BoldWhite   "${Esc}[1;37m")
+endif()
+
+find_package(PkgConfig REQUIRED)
+
+include_directories("${CMAKE_CURRENT_SOURCE_DIR}/catch-framework")
+
+aux_source_directory("geometric" GEOMETRIC_TEST_SOURCES)
+set(TEST_SOURCES
+	${GEOMETRIC_TEST_SOURCES}
+)
+
+set(DUT_SOURCES
+	"../geometric/vector-operations.c"
+)
+
+add_executable(${PROJECT_NAME} EXCLUDE_FROM_ALL "test-main.cpp" ${TEST_SOURCES} ${DUT_SOURCES})
+target_link_libraries(${PROJECT_NAME} ${GLIB_LDFLAGS} ${GTK3_LDFLAGS} ${CAIRO_LDFLAGS} m version ${CMAKE_DL_LIBS})
+

test/geometric/vector-operations.cpp

@@ -0,0 +1,160 @@
+#include <catch.hpp>
+#include <limits>
+
+extern "C" {
+#include <gds-render/geometric/vector-operations.h>
+}
+
+TEST_CASE("geometric/vector-operations/vector_2d_add", "[GEOMETRIC]")
+{
+	struct vector_2d res;
+	struct vector_2d a;
+	struct vector_2d b;
+
+	a.x = 1;
+	a.y = 2;
+
+	b.x = 2;
+	b.y = 6;
+
+	vector_2d_add(&res, &a, &b);
+
+	REQUIRE(res.x == Approx(a.x + b.x));
+	REQUIRE(res.y == Approx(a.y + b.y));
+}
+
+TEST_CASE("geometric/vector-operations/vector_2d_calculate_angle_between", "[GEOMETRIC]")
+{
+	double angle;
+	struct vector_2d a;
+	struct vector_2d b;
+
+	a.x = 1;
+	a.y = 0;
+
+	b.x = 0;
+	b.y = 1;
+
+	angle = vector_2d_calculate_angle_between(&a, &a);
+	REQUIRE(angle == Approx(0.0));
+
+	angle = vector_2d_calculate_angle_between(&a, &b);
+	REQUIRE(angle == Approx(90.0 / 180.0 * M_PI));
+}
+
+TEST_CASE("geometric/vector-operations/vector_2d_subtract", "[GEOMETRIC]")
+{
+	struct vector_2d res;
+	struct vector_2d a;
+	struct vector_2d b;
+
+	a.x = 1;
+	a.y = 2;
+
+	b.x = 2;
+	b.y = 6;
+
+	vector_2d_subtract(&res, &a, &b);
+
+	REQUIRE(res.x == Approx(a.x - b.x));
+	REQUIRE(res.y == Approx(a.y - b.y));
+}
+
+TEST_CASE("geometric/vector-operations/vector_2d_abs", "[GEOMETRIC]")
+{
+	struct vector_2d c;
+	struct vector_2d a;
+	struct vector_2d b;
+	double a_len, b_len, c_len;
+
+	a.x = 1;
+	a.y = 0;
+
+	b.x = 0;
+	b.y = 2;
+
+	c.x = 3;
+	c.y = 4;
+
+	a_len = vector_2d_abs(&a);
+	b_len = vector_2d_abs(&b);
+	c_len = vector_2d_abs(&c);
+
+	REQUIRE(a_len == Approx(1.0));
+	REQUIRE(b_len == Approx(2.0));
+	REQUIRE(c_len == Approx(5.0));
+}
+
+TEST_CASE("geometric/vector-operations/vector_2d_scalar_multipy", "[GEOMETRIC]")
+{
+	struct vector_2d c;
+	struct vector_2d a;
+	struct vector_2d b;
+	double mult;
+
+	a.x = 1;
+	a.y = 0;
+	b.x = 0;
+	b.y = 2;
+	mult = vector_2d_scalar_multipy(&a, &b);
+	REQUIRE(mult == Approx(0.0));
+	
+	a.x = 1;
+	a.y = 1;
+	b.x = 1;
+	b.y = 1;
+	mult = vector_2d_scalar_multipy(&a, &b);
+	REQUIRE(mult == Approx(2.0));	
+}
+
+TEST_CASE("geometric/vector-operations/vector_2d_normalize", "[GEOMETRIC]")
+{
+	struct vector_2d a;
+
+	a.x = 1;
+	a.y = 0;
+	vector_2d_normalize(&a);
+	REQUIRE(a.x == Approx(1.0));
+	REQUIRE(a.y == Approx(0.0));
+
+	a.x = 1;
+	a.y = -1;
+	vector_2d_normalize(&a);
+	REQUIRE(a.x == Approx(1.0/sqrt(2)));
+	REQUIRE(a.y == Approx(-1.0/sqrt(2)));
+}
+
+TEST_CASE("geometric/vector-operations/vector_2d_rotate", "[GEOMETRIC]")
+{
+	struct vector_2d a;
+
+	a.x = 1;
+	a.y = 0;
+	vector_2d_rotate(&a, M_PI/2);
+	REQUIRE(a.x == Approx(0.0).scale(0.001));
+	REQUIRE(a.y == Approx(1.0));
+
+	a.x = 0;
+	a.y = 1;
+	vector_2d_rotate(&a, -M_PI/2);
+	vector_2d_rotate(&a, M_PI);
+	REQUIRE(a.x == Approx(-1.0));
+	REQUIRE(a.y == Approx(0.0).scale(0.001));
+}
+
+TEST_CASE("geometric/vector-operations/vector_2d_scale", "[GEOMETRIC]")
+{
+	struct vector_2d a;
+
+	a.x = 1;
+	a.y = 0;
+	vector_2d_scale(&a, 2.0);
+	REQUIRE(a.x == Approx(2.0));
+	REQUIRE(a.y == Approx(0.0));
+
+	a.x = 1;
+	a.y = -3;
+	vector_2d_scale(&a, 0.5);
+	REQUIRE(a.x == Approx(0.5));
+	REQUIRE(a.y == Approx(-1.5));
+}

test/test-main.cpp

@@ -0,0 +1,2 @@
+#define CATCH_CONFIG_MAIN
+#include "catch-framework/catch.hpp"