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/*
* COPYRIGHT
*
* pcb-rnd, interactive printed circuit board design
* Copyright (C) 2021 Tibor 'Igor2' Palinkas
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Contact:
* Project page: http://repo.hu/projects/pcb-rnd
* lead developer: http://repo.hu/projects/pcb-rnd/contact.html
* mailing list: pcb-rnd (at) list.repo.hu (send "subscribe")
*/
/* Returns coords of endpoint of obj that is on 'on' */
static int map_seg_get_end_line_line(pcb_line_t *obj, pcb_line_t *on, rnd_coord_t *ox, rnd_coord_t *oy)
{
rnd_coord_t r = obj->Thickness/2;
if (pcb_is_point_on_line(obj->Point1.X, obj->Point1.Y, r, on)) {
*ox = obj->Point1.X; *oy = obj->Point1.Y;
return 0;
}
if (pcb_is_point_on_line(obj->Point2.X, obj->Point2.Y, r, on)) {
*ox = obj->Point2.X; *oy = obj->Point2.Y;
return 0;
}
return -1;
}
/* Returns coords of endpoint of obj that is on 'on' */
static int map_seg_get_end_arc_line(pcb_arc_t *obj, pcb_line_t *on, rnd_coord_t *ox, rnd_coord_t *oy)
{
rnd_coord_t r = obj->Thickness/2, ex, ey;
int n;
for(n = 0; n < 2; n++) {
pcb_arc_get_end(obj, n, &ex, &ey);
if (pcb_is_point_on_line(ex, ey, r, on)) {
*ox = ex; *oy = ey;
return 0;
}
}
return -1;
}
/* check which endpoint of obj falls on hub line and return the
centerline x;y coords of that point */
static int map_seg_get_end_coords_on_line(pcb_any_obj_t *obj, pcb_line_t *hub, rnd_coord_t *ox, rnd_coord_t *oy)
{
switch(obj->type) {
case PCB_OBJ_LINE: return map_seg_get_end_line_line((pcb_line_t *)obj, hub, ox, oy);
case PCB_OBJ_ARC: return map_seg_get_end_arc_line((pcb_arc_t *)obj, hub, ox, oy);
default:
*ox = *oy = 0;
return -1;
}
return 0;
}
/* Returns coords of endpoint of obj that is on 'on' */
static int map_seg_get_end_line_arc(pcb_line_t *obj, pcb_arc_t *on, rnd_angle_t *isc)
{
rnd_coord_t r = obj->Thickness/2;
if (pcb_is_point_on_arc(obj->Point1.X, obj->Point1.Y, r, on)) {
*isc = pcb_arc_get_angle(on, obj->Point1.X, obj->Point1.Y);
return 0;
}
if (pcb_is_point_on_arc(obj->Point2.X, obj->Point2.Y, r, on)) {
*isc = pcb_arc_get_angle(on, obj->Point2.X, obj->Point2.Y);
return 0;
}
return -1;
}
/* Returns angle (in second arc) of endpoint of obj that is on 'on' */
static int map_seg_get_end_arc_arc(pcb_arc_t *obj, pcb_arc_t *on, rnd_angle_t *isc)
{
rnd_coord_t r = obj->Thickness/2, ex, ey;
int n;
for(n = 0; n < 2; n++) {
pcb_arc_get_end(obj, n, &ex, &ey);
if (pcb_is_point_on_arc(ex, ey, r, on)) {
*isc = pcb_arc_get_angle(on, ex, ey);
return 0;
}
}
return -1;
}
/* check which endpoint of obj falls on hub arc and return the
angle of that point */
static int map_seg_get_end_coords_on_arc(pcb_any_obj_t *obj, pcb_arc_t *hub, rnd_angle_t *isc)
{
switch(obj->type) {
case PCB_OBJ_LINE: return map_seg_get_end_line_arc((pcb_line_t *)obj, hub, isc);
case PCB_OBJ_ARC: return map_seg_get_end_arc_arc((pcb_arc_t *)obj, hub, isc);
default:
*isc = 0;
return -1;
}
return 0;
}
TODO("maybe remove this")
#if 0
/* Loads ox and oy with the coordinate of the intersection between trace objects
a and b. Also loads enda and endb with the endpoint bit (1 or 2 for ends; 0
for middle) */
static int map_seg_get_isc_coords(pcb_any_obj_t *a, pcb_any_obj_t *b, rnd_coord_t *ox, rnd_coord_t *oy)
{
rnd_angle_t ang;
if ((a->type == PCB_OBJ_LINE) && (map_seg_get_end_coords_on_line(b, (pcb_line_t *)a, ox, oy) == 0))
return 0;
if ((b->type == PCB_OBJ_LINE) && (map_seg_get_end_coords_on_line(a, (pcb_line_t *)b, ox, oy) == 0))
return 0;
if ((a->type == PCB_OBJ_ARC) && (map_seg_get_end_coords_on_arc(b, (pcb_arc_t *)a, &ang) == 0)) {
if (pcb_arc_get_xy((pcb_arc_t *)a, ang, ox, oy) != 0)
return -1;
return 0;
}
if ((b->type == PCB_OBJ_ARC) && (map_seg_get_end_coords_on_arc(a, (pcb_arc_t *)b, &ang) == 0)) {
if (pcb_arc_get_xy((pcb_arc_t *)b, ang, ox, oy) != 0)
return -1;
return 0;
}
return -1;
}
#endif
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