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/*
* COPYRIGHT
*
* pcb-rnd, interactive printed circuit board design
*
* 2d drafting plugin: trim objects
* pcb-rnd Copyright (C) 2018 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")
*/
#include "crosshair.h"
#include "obj_line.h"
#include <librnd/hid/tool.h>
typedef struct {
double line_angle[32], move_angle[32];
rnd_coord_t line_length[32], move_length[32];
double line_angle_mod, move_angle_mod;
rnd_coord_t line_length_mod, move_length_mod;
int line_angle_len, line_length_len, move_angle_len, move_length_len;
} ddraft_cnst_t;
static ddraft_cnst_t cons;
static int find_best_angle(double *out_ang, rnd_coord_t x1, rnd_coord_t y1, rnd_coord_t x2, rnd_coord_t y2, double *angles, int anglen, double angle_mod)
{
double diff, ang, best_diff, target_ang;
int n, best;
ang = atan2(y2 - y1, x2 - x1) * RND_RAD_TO_DEG;
if (anglen > 0) {
/* find the best matching constraint angle */
best = -1;
best_diff = 1000.0;
for(n = 0; n < anglen; n++) {
if (angles[n] < 180)
diff = fabs(ang - angles[n]);
else
diff = fabs(ang + (angles[n]-180));
if (diff < best_diff) {
best_diff = diff;
best = n;
}
}
if (best < 0)
return -1;
target_ang = angles[best];
}
else
target_ang = ang;
if (angle_mod > 0)
target_ang = floor(target_ang / angle_mod) * angle_mod;
target_ang /= RND_RAD_TO_DEG;
*out_ang = target_ang;
return 0;
}
static int find_best_length(double *out_len, rnd_coord_t x1, rnd_coord_t y1, rnd_coord_t x2, rnd_coord_t y2, rnd_coord_t *lengths, int lengthlen, rnd_coord_t length_mod)
{
double len, best_diff, diff, target_len;
int n, best;
len = rnd_distance(x1, y1, x2, y2);
if (lengthlen > 0) {
/* find the best matching constraint length */
best = -1;
best_diff = RND_COORD_MAX;
for(n = 0; n < lengthlen; n++) {
diff = fabs(len - lengths[n]);
if (diff < best_diff) {
best_diff = diff;
best = n;
}
}
if (best < 0)
return -1;
target_len = lengths[best];
}
else
target_len = len;
if (length_mod > 0)
target_len = floor(target_len / (double)length_mod) * (double)length_mod;
*out_len = target_len;
return 0;
}
static void cnst_line_anglen(ddraft_cnst_t *cn)
{
double target_ang, dx, dy, target_len;
pcb_route_object_t *line;
int res;
if (((cn->line_angle_len == 0) && (cn->line_length_len == 0) && (cn->line_angle_mod <= 0) && (cn->line_length_mod <= 0)) || (pcb_crosshair.Route.size < 1))
return;
line = &pcb_crosshair.Route.objects[pcb_crosshair.Route.size-1];
if (line->type != PCB_OBJ_LINE)
return;
res = find_best_angle(&target_ang,
line->point1.X, line->point1.Y, pcb_crosshair.X, pcb_crosshair.Y,
cn->line_angle, cn->line_angle_len, cn->line_angle_mod);
if (res < 0) return;
res = find_best_length(&target_len,
line->point1.X, line->point1.Y, pcb_crosshair.X, pcb_crosshair.Y,
cn->line_length, cn->line_length_len, cn->line_length_mod);
if (res < 0) return;
dx = target_len * cos(target_ang);
dy = target_len * sin(target_ang);
line->point2.X = line->point1.X + dx;
line->point2.Y = line->point1.Y + dy;
}
static void cnst_line2(ddraft_cnst_t *cn)
{
cnst_line_anglen(cn);
}
static void cnst_move(ddraft_cnst_t *cn)
{
double target_ang, dx, dy, target_len;
int res;
if (((cn->move_angle_len == 0) && (cn->move_length_len == 0) && (cn->move_angle_mod <= 0) && (cn->move_length_mod <= 0)))
return;
res = find_best_angle(&target_ang,
pcb_crosshair.AttachedObject.X, pcb_crosshair.AttachedObject.Y, pcb_crosshair.X, pcb_crosshair.Y,
cn->move_angle, cn->move_angle_len, cn->move_angle_mod);
if (res < 0) return;
res = find_best_length(&target_len,
pcb_crosshair.AttachedObject.X, pcb_crosshair.AttachedObject.Y, pcb_crosshair.X, pcb_crosshair.Y,
cn->move_length, cn->move_length_len, cn->move_length_mod);
if (res < 0) return;
dx = target_len * cos(target_ang);
dy = target_len * sin(target_ang);
pcb_crosshair.AttachedObject.tx = pcb_crosshair.AttachedObject.X + dx;
pcb_crosshair.AttachedObject.ty = pcb_crosshair.AttachedObject.Y + dy;
}
static void cnst_enforce(rnd_design_t *hidlib, void *user_data, int argc, rnd_event_arg_t argv[])
{
if ((pcb_crosshair.AttachedLine.State == PCB_CH_STATE_SECOND) || (pcb_crosshair.AttachedLine.State == PCB_CH_STATE_THIRD))
cnst_line2(&cons);
else if (pcb_crosshair.AttachedObject.State == PCB_CH_STATE_SECOND) /* normal d&d move or copy */
cnst_move(&cons);
else if (pcb_crosshair_note.Moving) /* selected copy (buffer mode) */
cnst_move(&cons);
}
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