118 lines
3.4 KiB
C
118 lines
3.4 KiB
C
/*
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* GDSII-Converter
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* Copyright (C) 2018 Mario Hüttel <mario.huettel@gmx.net>
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*
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* This file is part of GDSII-Converter.
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*
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* GDSII-Converter is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* GDSII-Converter is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GDSII-Converter. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file cell-trigonometrics.c
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* @brief Calculation of gds_cell trigonometrics
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* @author Mario Hüttel <mario.huettel@gmx.net>
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*/
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#include "cell-trigonometrics.h"
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#include <math.h>
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/**
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* @addtogroup trigonometric
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* @{
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*/
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static void convert_gds_point_to_2d_vector(struct gds_point *pt, struct vector_2d *vector)
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{
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vector->x = pt->x;
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vector->y = pt->y;
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}
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/**
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* @brief update_box_with_gfx
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* @param box
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* @param gfx_list
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*/
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static void update_box_with_gfx(union bounding_box *box, struct gds_graphics *gfx)
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{
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union bounding_box current_box;
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bounding_box_prepare_empty(¤t_box);
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switch (gfx->gfx_type) {
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case GRAPHIC_BOX:
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/* Expected fallthrough */
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case GRAPHIC_POLYGON:
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bounding_box_calculate_polygon(gfx->vertices,
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(conv_generic_to_vector_2d_t)&convert_gds_point_to_2d_vector,
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¤t_box);
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break;
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case GRAPHIC_PATH:
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/*
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* This is not implemented correctly.
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* Please be aware if paths are the outmost elements of your cell.
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* You might end up with a completely wrong calculated cell size.
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*/
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bounding_box_calculate_path_box(gfx->vertices, gfx->width_absolute,
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(conv_generic_to_vector_2d_t)&convert_gds_point_to_2d_vector,
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¤t_box);
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break;
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default:
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/* Unknown graphics object. */
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/* Print error? Nah.. */
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break;
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}
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/* Update box with results */
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bounding_box_update_box(box, ¤t_box);
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}
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void calculate_cell_bounding_box(union bounding_box *box, struct gds_cell *cell)
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{
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GList *gfx_list;
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struct gds_graphics *gfx;
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GList *sub_cell_list;
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struct gds_cell_instance *sub_cell;
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union bounding_box temp_box;
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if (!box || !cell)
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return;
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/* Update box with graphic elements */
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for (gfx_list = cell->graphic_objs; gfx_list != NULL; gfx_list = gfx_list->next) {
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gfx = (struct gds_graphics *)gfx_list->data;
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update_box_with_gfx(box, gfx);
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}
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/* Update bounding box with boxes of subcells */
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for (sub_cell_list = cell->child_cells; sub_cell_list != NULL; sub_cell_list = sub_cell_list->next) {
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sub_cell = (struct gds_cell_instance *)sub_cell_list->data;
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bounding_box_prepare_empty(&temp_box);
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/* Recursion Woohoo!! This dies if your GDS is faulty and contains a reference loop */
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calculate_cell_bounding_box(&temp_box, sub_cell->cell_ref);
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/* Apply transformations */
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bounding_box_apply_transform(ABS(sub_cell->magnification), sub_cell->angle, sub_cell->flipped, &temp_box);
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/* Move bounding box to origin */
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temp_box.vectors.lower_left.x += sub_cell->origin.x;
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temp_box.vectors.upper_right.x += sub_cell->origin.x;
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temp_box.vectors.lower_left.y += sub_cell->origin.y;
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temp_box.vectors.upper_right.y += sub_cell->origin.y;
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/* update the parent's box */
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bounding_box_update_box(box, &temp_box);
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}
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}
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/** @} */
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