Init
This commit is contained in:
commit
b89166e657
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# This file is used to ignore files which are generated
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# ----------------------------------------------------------------------------
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*~
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*.autosave
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*.a
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*.core
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*.moc
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*.o
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*.obj
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*.orig
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*.rej
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*.so
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*.so.*
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*_pch.h.cpp
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*_resource.rc
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*.qm
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.#*
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*.*#
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core
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!core/
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tags
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.DS_Store
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.directory
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*.debug
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Makefile*
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*.prl
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*.app
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moc_*.cpp
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ui_*.h
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qrc_*.cpp
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Thumbs.db
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*.res
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*.rc
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/.qmake.cache
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/.qmake.stash
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# qtcreator generated files
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*.pro.user*
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# xemacs temporary files
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*.flc
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# Vim temporary files
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.*.swp
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# Visual Studio generated files
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*.ib_pdb_index
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*.idb
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*.ilk
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*.pdb
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*.sln
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*.suo
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*.vcproj
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*vcproj.*.*.user
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*.ncb
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*.sdf
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*.opensdf
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*.vcxproj
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*vcxproj.*
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# MinGW generated files
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*.Debug
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*.Release
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# Python byte code
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*.pyc
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# Binaries
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# --------
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*.dll
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*.exe
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*.user
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*.user*
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*.buildconfig
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project(mandelbrot)
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cmake_minimum_required(VERSION 2.8)
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find_package(PkgConfig REQUIRED)
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pkg_search_module(GLIB REQUIRED glib-2.0)
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pkg_check_modules(GTK3 REQUIRED gtk+-3.0)
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pkg_check_modules(CAIRO REQUIRED cairo)
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add_subdirectory(glade)
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include_directories(${GLIB_INCLUDE_DIRS} ${GTK3_INCLUDE_DIRS} ${CAIRO_INCLUDE_DIRS})
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link_directories(${GLIB_LINK_DIRS} ${GTK3_LINK_DIRS} ${CAIRO_LINK_DIRS})
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add_definitions(${GLIB2_CFLAGS_OTHER})
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aux_source_directory("src" SOURCES)
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add_compile_options(-Wall)
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add_executable(${PROJECT_NAME} ${SOURCES} ${CMAKE_CURRENT_BINARY_DIR}/glade/resources.c)
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add_dependencies(${PROJECT_NAME} glib-resources)
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SET_SOURCE_FILES_PROPERTIES(${CMAKE_CURRENT_BINARY_DIR}/glade/resources.c PROPERTIES GENERATED 1)
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target_link_libraries(${PROJECT_NAME} ${GLIB_LDFLAGS} ${GTK3_LDFLAGS} ${CAIRO_LDFLAGS} m pthread)
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install (TARGETS ${PROJECT_NAME} DESTINATION bin)
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add_custom_target(glib-resources DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/resources.c)
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add_custom_command(DEPENDS
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${CMAKE_CURRENT_SOURCE_DIR}/*.glade
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${CMAKE_CURRENT_SOURCE_DIR}/resources.xml
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OUTPUT
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${CMAKE_CURRENT_BINARY_DIR}/resources.c
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COMMAND
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glib-compile-resources --target="${CMAKE_CURRENT_BINARY_DIR}/resources.c" --sourcedir="${CMAKE_CURRENT_SOURCE_DIR}" --generate-source "${CMAKE_CURRENT_SOURCE_DIR}/resources.xml"
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)
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<?xml version="1.0" encoding="UTF-8"?>
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<!-- Generated with glade 3.22.1 -->
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<interface>
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<requires lib="gtk+" version="3.20"/>
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<object class="GtkWindow" id="main-window">
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<property name="width_request">310</property>
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<property name="height_request">310</property>
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<property name="visible">True</property>
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<property name="can_focus">False</property>
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<child>
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<placeholder/>
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</child>
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<child>
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<object class="GtkDrawingArea" id="drawing-area">
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<property name="visible">True</property>
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<property name="can_focus">False</property>
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</object>
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</child>
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</object>
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</interface>
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<?xml version="1.0" encoding="UTF-8"?>
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<gresources>
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<gresource prefix="/">
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<file compressed="true">main.glade</file>
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</gresource>
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</gresources>
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@ -0,0 +1,158 @@
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#include <stdio.h>
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#include <gtk/gtk.h>
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#include <math.h>
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#include <threads.h>
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struct canvas_buffer {
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unsigned int *mandelbrot_buffer;
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unsigned int iterations;
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unsigned int height;
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unsigned int width;
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double center_x;
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double center_y;
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double x_span;
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double y_span;
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};
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static gboolean on_main_window_close(GtkWidget *window, gpointer data)
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{
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gtk_main_quit();
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return FALSE;
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}
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static gboolean drawing_callback(GtkWidget *widget, cairo_t *cr, gpointer data)
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{
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struct canvas_buffer *buff = (struct canvas_buffer *)data;
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int width;
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int height;
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GtkStyleContext *style_context;
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int x, y;
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double color_scale;
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style_context = gtk_widget_get_style_context(widget);
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width = gtk_widget_get_allocated_width(widget);
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height = gtk_widget_get_allocated_height(widget);
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cairo_save(cr);
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/* Drawing code start */
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cairo_scale(cr, 1, -1);
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cairo_translate(cr, (double)width/2.0, -(double)height/2.0);
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for (x = 0; x < buff->width; x++) {
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for (y = 0; y < buff->height; y++) {
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cairo_rectangle(cr,
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((double)x - (double)(buff->width - 1) / 2),
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((double)y - (double)(buff->height - 1) / 2),
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1,
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1);
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if (buff->mandelbrot_buffer[y * buff->width + x] == buff->iterations) {
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cairo_set_source_rgb (cr, 0, 0, 0);
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} else {
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color_scale = (double)buff->mandelbrot_buffer[y * buff->width + x] / buff->iterations;
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cairo_set_source_rgb (cr, (sqrt(1-color_scale)), (color_scale*color_scale), color_scale);
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}
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cairo_fill(cr);
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}
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}
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/* Drawing code end */
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cairo_restore(cr);
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return FALSE;
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}
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static void calculate_mandelbrot(struct canvas_buffer *buff)
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{
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double val_per_x_pixel;
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double val_per_y_pixel;
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unsigned int i;
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unsigned int pixel_x;
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unsigned int pixel_y;
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double point_real, point_imag;
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double z_real, z_imag;
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double z2_real, z2_imag;
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if (!buff)
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return;
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/* Setup the calculation data */
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val_per_x_pixel = (buff->x_span) / (buff->width - 1);
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val_per_y_pixel = (buff->y_span) / (buff->height - 1);
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for (pixel_y = 0; pixel_y < buff->height; pixel_y++) {
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for (pixel_x = 0; pixel_x < buff->width; pixel_x++) {
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point_real = (((double)pixel_x - (double)(buff->width - 1) / 2)) * val_per_x_pixel + buff->center_x;
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point_imag = (((double)pixel_y - (double)(buff->height - 1) / 2)) * val_per_y_pixel + buff->center_y;
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z_real = 0.0;
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z_imag = 0.0;
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/* Check for convergence */
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for (i = 0; i < buff->iterations; i++) {
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z2_real = z_real * z_real - z_imag * z_imag;
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z2_imag = 2.0 * z_real * z_imag;
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z_real = z2_real + point_real;
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z_imag = z2_imag + point_imag;
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if ((z_real * z_real + z_imag * z_imag) >= 4.0)
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break;
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}
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buff->mandelbrot_buffer[pixel_y * buff->width + pixel_x] = i;
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}
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}
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}
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int f(void * a)
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{
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return 1;
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}
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int main(int argc, char **argv)
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{
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GtkDrawingArea *drawing_area;
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GtkWindow *window;
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GtkBuilder *builder;
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static struct canvas_buffer mandelbrot_buff;
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gtk_init(&argc, &argv);
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builder = gtk_builder_new_from_resource("/main.glade");
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drawing_area = GTK_DRAWING_AREA(gtk_builder_get_object(builder, "drawing-area"));
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window = GTK_WINDOW(gtk_builder_get_object(builder, "main-window"));
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g_signal_connect(window, "delete-event", G_CALLBACK(on_main_window_close), NULL);
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g_signal_connect(G_OBJECT(drawing_area),
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"draw", G_CALLBACK(drawing_callback), (gpointer)&mandelbrot_buff);
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g_object_unref(builder);
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thrd_t t;
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thrd_create(&t, f, NULL);
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mandelbrot_buff.x_span = 2.8;
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mandelbrot_buff.y_span = 2.25;
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mandelbrot_buff.center_x = -0.5;
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mandelbrot_buff.center_y = 0.0;
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mandelbrot_buff.width = 1900;
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mandelbrot_buff.height = 1000;
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mandelbrot_buff.iterations = 300;
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mandelbrot_buff.mandelbrot_buffer = (unsigned int *)malloc(sizeof(unsigned int) * mandelbrot_buff.height * mandelbrot_buff.width);
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calculate_mandelbrot(&mandelbrot_buff);
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gtk_main();
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return 0;
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}
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