Updated code for cell size calculation

main-window.c

@@ -36,6 +36,7 @@
 #include "latex-output/latex-output.h"
 #include "widgets/conv-settings-dialog.h"
 #include "cairo-output/cairo-output.h"
+#include "trigonometric/cell-trigonometrics.h"
 
 /**
  * @brief User data supplied to callback function of the open button
@@ -217,6 +218,7 @@ static void on_convert_clicked(gpointer button, gpointer user)
 	GtkFileFilter *filter;
 	gint res;
 	char *file_name;
+	union bounding_box *cell_box;
 
 	/* Get selected cell */
 	selection = gtk_tree_view_get_selection(data->tree_view);
@@ -231,6 +233,9 @@ static void on_convert_clicked(gpointer button, gpointer user)
 	/* Get layers that are rendered */
 	layer_list = export_rendered_layer_info();
 
+	/* Calculate cell size in DB units */
+
+	/* Show settings dialog */
 	settings = renderer_settings_dialog_new(GTK_WINDOW(data->main_window));
 	renderer_settings_dialog_set_settings(settings, &sett);
 	res = gtk_dialog_run(GTK_DIALOG(settings));

trigonometric/bounding-box.c

@@ -157,4 +157,9 @@ void bounding_box_update_point(union bounding_box *destination, conv_generic_to_
 	destination->vectors.upper_right.y = MAX(destination->vectors.upper_right.y, point.y);
 }
 
+void bounding_box_apply_transform(double scale, double rotation, union bounding_box *box)
+{
+
+}
+
 /** @} */

trigonometric/bounding-box.h

@@ -48,6 +48,7 @@ void bounding_box_calculate_polygon(GList *vertices, conv_generic_to_vector_2d_t
 void bounding_box_update_box(union bounding_box *destination, union bounding_box *update);
 void bounding_box_prepare_empty(union bounding_box *box);
 void bounding_box_update_point(union bounding_box *destination, conv_generic_to_vector_2d_t conv_func, void *pt);
+void bounding_box_apply_transform(double scale, double rotation, union bounding_box *box);
 
 #endif /* _BOUNDING_BOX_H_ */
 

trigonometric/cell-trigonometrics.c

@@ -0,0 +1,104 @@
+/*
+ * 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 cell-trigonometrics.c
+ * @brief Calculation of gds_cell trigonometrics
+ * @author Mario Hüttel <mario.huettel@gmx.net>
+ */
+
+#include "cell-trigonometrics.h"
+
+/**
+ * @addtogroup trigonometric
+ * @{
+ */
+
+static void convert_gds_point_to_2d_vector(struct gds_point *pt, struct vector_2d *vector)
+{
+	vector->x = pt->x;
+	vector->y = pt->y;
+}
+
+/**
+ * @brief update_box_with_gfx
+ * @param box
+ * @param gfx_list
+ */
+static void update_box_with_gfx(union bounding_box *box, struct gds_graphics *gfx)
+{
+	union bounding_box current_box;
+
+	bounding_box_prepare_empty(&current_box);
+
+	switch (gfx->gfx_type) {
+	case GRAPHIC_BOX:
+	case GRAPHIC_POLYGON:
+		bounding_box_calculate_polygon(gfx->vertices,
+							(conv_generic_to_vector_2d_t)&convert_gds_point_to_2d_vector,
+							&current_box);
+		break;
+	case GRAPHIC_PATH:
+		/*
+		 * This is not implemented correctly.
+		 * Please be aware if paths are the oputpost elements of your cell.
+		 * You might end up with a completely wrong calculated cell size.
+		 */
+		/* Okay.. You're right. It is not implemented at all. ;P */
+		break;
+	default:
+		/* Unknown graphics object. */
+		/* Print error? Nah.. */
+		break;
+	}
+
+	/* Update box with results */
+	bounding_box_update_box(box, &current_box);
+}
+
+void calculate_cell_bounding_box(union bounding_box *box, struct gds_cell *cell)
+{
+	GList *gfx_list;
+	struct gds_graphics *gfx;
+	GList *sub_cell_list;
+	struct gds_cell_instance *sub_cell;
+	union bounding_box temp_box;
+
+	if (!box || !cell)
+		return;
+
+	/* Update box with graphic elements */
+	for (gfx_list = cell->graphic_objs; gfx_list != NULL; gfx_list = gfx_list->next) {
+		gfx = (struct gds_graphics *)gfx_list->data;
+		update_box_with_gfx(box, gfx);
+	}
+
+	/* Update bounding box with boxes of subcells */
+	for (sub_cell_list = cell->child_cells; sub_cell_list != NULL; sub_cell_list = sub_cell_list->next) {
+		sub_cell = (struct gds_cell_instance *)sub_cell_list->data;
+		bounding_box_prepare_empty(&temp_box);
+		/* Recursion Woohoo!!  This dies if your GDS is faulty and contains a reference loop */
+		calculate_cell_bounding_box(&temp_box, sub_cell->cell_ref);
+
+		/* TODO: Apply transformations! */
+
+	}
+}
+
+/** @} */

trigonometric/cell-trigonometrics.h

@@ -0,0 +1,47 @@
+/*
+ * 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 cell-trigonometrics.h
+ * @brief Calculation of gds_cell trigonometrics
+ * @author Mario Hüttel <mario.huettel@gmx.net>
+ */
+
+/**
+ * @addtogroup trigonometric
+ * @{
+ */
+
+#ifndef _CELL_TRIGONOMETRICS_H_
+#define _CELL_TRIGONOMETRICS_H_
+
+#include "bounding-box.h"
+#include "../gds-parser/gds-types.h"
+
+/**
+ * @brief calculate_cell_bounding_box Calculate bounding box of gds cell
+ * @param box Resulting boundig box. Will be uüdated and not overwritten
+ * @param cell toplevel cell
+ * @warning Path handling not yet implemented correctly
+ */
+void calculate_cell_bounding_box(union bounding_box *box, struct gds_cell *cell);
+
+#endif /* _CELL_TRIGONOMETRICS_H_ */
+
+/** @} */