1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
/*
xtrkcad_spiro - An adapter for Spiro splines within XtrkCAD.
Copyright (C) XtrkCad.org, based on the Spiro Toolkit of Ralph Levien.
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.
*/
#include "zmisc.h"
#include "common.h"
#include "bezctx.h"
#include "bezctx_xtrkcad.h"
#include "track.h"
#include "draw.h"
#include "tbezier.h"
#include "i18n.h"
#include "math.h"
#include "utility.h"
#define trkSeg(N) DYNARR_N(trkSeg_t,* bc->segsArray, N );
typedef struct {
bezctx base;
dynArr_t * segsArray;
BOOL_T track;
BOOL_T is_open;
BOOL_T has_NAN;
BOOL_T draw_spots;
DIST_T spot_size;
coOrd last_pos; // For moveTo
int ends[2]; //Start and End knot number
} bezctx_xtrkcad;
static void
bezctx_xtrkcad_moveto(bezctx *z, double x, double y, int is_open) {
bezctx_xtrkcad *bc = (bezctx_xtrkcad *)z;
bc->last_pos.x = x;
bc->last_pos.y = y;
if (!(isfinite(x) && isfinite(y))) {
bc->has_NAN = TRUE;
return;
}
}
static void
bezctx_xtrkcad_lineto(bezctx *z, double x, double y) {
bezctx_xtrkcad *bc = (bezctx_xtrkcad *)z;
if (!(isfinite(x) && isfinite(y))) {
bc->has_NAN = TRUE;
}
if (!bc->is_open || bc->has_NAN) {
bc->last_pos.x = x;
bc->last_pos.y = y;
return;
}
DYNARR_APPEND(trkSeg_t,* bc->segsArray,10);
trkSeg_p seg = &DYNARR_LAST( trkSeg_t, *bc->segsArray);
seg->u.l.pos[0].x = bc->last_pos.x;
seg->u.l.pos[0].y = bc->last_pos.y;
seg->u.l.pos[1].x = x;
seg->u.l.pos[1].y = y;
seg->u.l.option = 0;
seg->lineWidth = 0.0;
seg->color = wDrawColorBlack;
seg->type = SEG_STRTRK;
DYNARR_FREE( trkSeg_t, seg->bezSegs );
seg->u.l.angle = FindAngle(seg->u.l.pos[0],seg->u.l.pos[1]);
bc->last_pos.x = x;
bc->last_pos.y = y;
}
static void
bezctx_xtrkcad_quadto(bezctx *z, double x1, double y1, double x2, double y2)
{
bezctx_xtrkcad *bc = (bezctx_xtrkcad *)z;
if ((!isfinite(x1) || !isfinite(y1)
|| !isfinite(x2) || !isfinite(y2))) {
bc->has_NAN = TRUE;
}
if (!bc->is_open || bc->has_NAN) {
bc->last_pos.x = x2;
bc->last_pos.y = y2;
return;
}
DYNARR_APPEND(trkSeg_t,* bc->segsArray,10);
trkSeg_p seg = &DYNARR_LAST( trkSeg_t, *bc->segsArray);
seg->u.b.pos[0] = bc->last_pos;
seg->u.b.pos[1].x = x1;
seg->u.b.pos[1].y = y1;
seg->u.b.pos[2].x = x1;
seg->u.b.pos[2].y = y1;
seg->u.b.pos[3].x = x2;
seg->u.b.pos[3].y = y2;
seg->lineWidth = 0.0;
seg->color = wDrawColorBlack;
seg->type = SEG_BEZTRK;
DYNARR_FREE( trkSeg_t, seg->bezSegs );
bc->last_pos.x = x2;
bc->last_pos.y = y2;
FixUpBezierSeg(seg->u.b.pos,seg,bc->track);
}
static void
bezctx_xtrkcad_curveto(bezctx *z, double x1, double y1, double x2, double y2,
double x3, double y3)
{
bezctx_xtrkcad *bc = (bezctx_xtrkcad *)z;
if (!(isfinite(x1) && isfinite(y1)
&& isfinite(x2) && isfinite(y2)
&& isfinite(x3) && isfinite(y3))) {
bc->has_NAN = TRUE;
}
if (!bc->is_open || bc->has_NAN) {
bc->last_pos.x = x3;
bc->last_pos.y = y3;
return;
}
DYNARR_APPEND(trkSeg_t,* bc->segsArray,10);
trkSeg_p seg = &DYNARR_LAST(trkSeg_t, *bc->segsArray);
seg->u.b.pos[0].x = bc->last_pos.x;
seg->u.b.pos[0].y = bc->last_pos.y;
seg->u.b.pos[1].x = x1;
seg->u.b.pos[1].y = y1;
seg->u.b.pos[2].x = x2;
seg->u.b.pos[2].y = y2;
seg->u.b.pos[3].x = x3;
seg->u.b.pos[3].y = y3;
seg->lineWidth = 0.0;
seg->color = wDrawColorBlack;
seg->type = SEG_BEZTRK;
DYNARR_FREE( trkSegs_t, seg->bezSegs );
bc->last_pos.x = x3;
bc->last_pos.y = y3;
FixUpBezierSeg(seg->u.b.pos,seg,bc->track);
if (bc->draw_spots) {
DYNARR_APPEND(trkSeg_t,* bc->segsArray,10);
seg = &DYNARR_LAST( trkSeg_t, *bc->segsArray );
seg->type=SEG_FILCRCL;
seg->u.c.center.x = bc->last_pos.x;
seg->u.c.center.y = bc->last_pos.y;
seg->u.c.radius = bc->spot_size;
seg->lineWidth = 0.0;
seg->color = wDrawColorGrey40;
}
}
void
bezctx_xtrkcad_mark_knot(bezctx *z, int knot_idx) {
bezctx_xtrkcad *bc = (bezctx_xtrkcad *)z;
if (knot_idx >= bc->ends[0]) bc->is_open = TRUE; //Only worry about segs inside our gap
if (knot_idx >= bc->ends[1]) bc->is_open = FALSE;
}
bezctx *
new_bezctx_xtrkcad(dynArr_t * segArray, int ends[2], BOOL_T spots, DIST_T spot_size) {
bezctx_xtrkcad *result = znew(bezctx_xtrkcad, 1);
result->segsArray = segArray;
result->ends[0] = ends[0];
result->ends[1] = ends[1];
result->base.moveto = bezctx_xtrkcad_moveto;
result->base.lineto = bezctx_xtrkcad_lineto;
result->base.quadto = bezctx_xtrkcad_quadto;
result->base.curveto = bezctx_xtrkcad_curveto;
result->base.mark_knot = bezctx_xtrkcad_mark_knot;
result->is_open = FALSE;
result->has_NAN = FALSE;
result->draw_spots = spots;
result->spot_size = spot_size;
result->track = TRUE;
DYNARR_INIT( trkSeg_t, *result->segsArray );
return &result->base;
}
BOOL_T bezctx_xtrkcad_close(bezctx *z) {
bezctx_xtrkcad *bc = (bezctx_xtrkcad *)z;
if (bc->has_NAN) return FALSE;
return TRUE;
}
|
