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Add pointer to parent library to cells, implement first draft of cell size/shape preview

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This commit is contained in:
Mario Hüttel
2019-02-27 21:30:41 +01:00
parent bce47f11fc
commit 2e1cf456c7
6 changed files with 81 additions and 9 deletions
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44
trigonometric/bounding-box.c
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@@ -133,9 +133,32 @@ static void calculate_path_miter_points(struct vector_2d *a, struct vector_2d *b
vector_2d_subtract(m2, m2, &v_vec);
}
void bounding_box_calculate_path_box(GList *vertices, conv_generic_to_vector_2d_t conv_func, union bounding_box *box)
void bounding_box_calculate_path_box(GList *vertices, double thickness,
conv_generic_to_vector_2d_t conv_func, union bounding_box *box)
{
printf("Error! Function bounding_box_calculate_path_box not yet implemented!\n");
GList *vertex_iterator;
struct vector_2d pt;
printf("Warning! Function bounding_box_calculate_path_box not yet implemented correctly!\n");
if (!vertices || !box)
return;
for (vertex_iterator = vertices; vertex_iterator != NULL; vertex_iterator = g_list_next(vertex_iterator)) {
if (conv_func != NULL)
conv_func(vertex_iterator->data, &pt);
else
(void)vector_2d_copy(&pt, (struct vector_2d *)vertex_iterator->data);
/* These are approximations.
* Used as long as miter point calculation is not fully implemented
*/
box->vectors.lower_left.x = MIN(box->vectors.lower_left.x, pt.x - thickness/2);
box->vectors.lower_left.y = MIN(box->vectors.lower_left.y, pt.y - thickness/2);
box->vectors.upper_right.x = MAX(box->vectors.upper_right.x, pt.x + thickness/2);
box->vectors.upper_right.y = MAX(box->vectors.upper_right.y, pt.y + thickness/2);
}
}
void bounding_box_update_point(union bounding_box *destination, conv_generic_to_vector_2d_t conv_func, void *pt)
@@ -157,9 +180,24 @@ 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)
/**
* @brief bounding_box_apply_transform
* @param scale scaling factor
* @param rotation roation of bounding box around the origin in degrees (counterclockwise)
* @param box bounding box the operations should be applied to
*/
void bounding_box_apply_transform(double scale, double rotation_deg, bool flip_at_x, union bounding_box *box)
{
int i;
/* Due to linearity, the order of the operations does not matter.
* flip must be applied before rotation as defined by the GDS format
*/
for (i = 0; i < 2; i++) {
box->vector_array[i].y *= (flip_at_x ? -1 : 1);
vector_2d_rotate(&box->vector_array[i], rotation_deg * M_PI / 180);
vector_2d_scale(&box->vector_array[i], scale);
}
}
/** @} */

4
trigonometric/bounding-box.h
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@@ -32,6 +32,7 @@
#define _BOUNDING_BOX_H_
#include <glib.h>
#include "vector-operations.h"
#include <stdbool.h>
union bounding_box {
/** Coordinate System is (y up | x right) */
@@ -48,7 +49,8 @@ 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);
void bounding_box_apply_transform(double scale, double rotation_deg, bool flip_at_x, union bounding_box *box);
void bounding_box_calculate_path_box(GList *vertices, double thickness, conv_generic_to_vector_2d_t conv_func, union bounding_box *box);
#endif /* _BOUNDING_BOX_H_ */

16
trigonometric/cell-trigonometrics.c
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@@ -24,6 +24,7 @@
*/
#include "cell-trigonometrics.h"
#include <math.h>
/**
* @addtogroup trigonometric
@@ -61,7 +62,9 @@ static void update_box_with_gfx(union bounding_box *box, struct gds_graphics *gf
* Please be aware if paths are the outmost 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 */
bounding_box_calculate_path_box(gfx->vertices, gfx->width_absolute,
(conv_generic_to_vector_2d_t)&convert_gds_point_to_2d_vector,
&current_box);
break;
default:
/* Unknown graphics object. */
@@ -97,8 +100,17 @@ void calculate_cell_bounding_box(union bounding_box *box, struct gds_cell *cell)
/* 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! */
/* Apply transformations */
bounding_box_apply_transform(ABS(sub_cell->magnification), sub_cell->angle, sub_cell->flipped, &temp_box);
/* Move bounding box to origin */
temp_box.vectors.lower_left.x += sub_cell->origin.x;
temp_box.vectors.lower_left.x += sub_cell->origin.x;
temp_box.vectors.upper_right.y += sub_cell->origin.y;
temp_box.vectors.upper_right.y += sub_cell->origin.y;
/* update the parent's box */
bounding_box_update_box(box, &temp_box);
}
}