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
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
|
#include "cad.h"
#include "cad/debug.h"
struct smooth_line {
struct component l1;
struct component l2;
struct component corner;
struct component corner_center;
struct component end;
struct component start;
struct component perp1;
struct component perp2;
struct component corner_start;
struct component corner_end;
};
struct smooth_line a_smooth_line() {
return (struct smooth_line){
.l1 = {.type = COM_LINE},
.l2 = {.type = COM_LINE},
.corner = {.type = COM_POINT},
.corner_center = {.type = COM_POINT},
.end = {.type = COM_POINT},
.start = {.type = COM_POINT},
.perp1 = {.type = COM_LINE},
.perp2 = {.type = COM_LINE},
.corner_start = {.type = COM_POINT},
.corner_end = {.type = COM_POINT},
};
}
struct box {
struct component corner[4];
struct component side[4];
};
void a_box(struct box *box, struct topology *topo, struct constraints *constr) {
assert(box != NULL);
*box = (struct box){
.corner = {
{.type = COM_POINT},
{.type = COM_POINT},
{.type = COM_POINT},
{.type = COM_POINT},
},
.side = {
{.type = COM_LINE},
{.type = COM_LINE},
{.type = COM_LINE},
{.type = COM_LINE},
},
};
if(topo != NULL) {
add_fragment(topo, (struct topology_elem[]){
TOPO_MOVETO(&box->corner[0]),
TOPO_LINETO(&box->corner[1]),
TOPO_LINETO(&box->corner[2]),
TOPO_LINETO(&box->corner[3]),
TOPO_LINETO(&box->corner[0]),
TOPO_END(),
});
}
if(constr != NULL) {
add_constraint(constr, (struct constraint[]){
POINT_ON_LINE(&box->corner[0], &box->side[0]),
POINT_ON_LINE(&box->corner[1], &box->side[0]),
POINT_ON_LINE(&box->corner[1], &box->side[1]),
POINT_ON_LINE(&box->corner[2], &box->side[1]),
POINT_ON_LINE(&box->corner[2], &box->side[2]),
POINT_ON_LINE(&box->corner[3], &box->side[2]),
POINT_ON_LINE(&box->corner[0], &box->side[3]),
POINT_ON_LINE(&box->corner[3], &box->side[3]),
LL_ANGLE(&box->side[3], &box->side[0], DEG(90)),
LL_ANGLE(&box->side[1], &box->side[2], DEG(90)),
LL_ANGLE(&box->side[2], &box->side[3], DEG(90)),
CEND(),
});
}
}
struct mid {
struct component l1;
struct component l2;
struct component x1;
struct component p1;
struct component p;
};
struct mid a_midpoint() {
return (struct mid) {
.l1 = {.type = COM_LINE},
.l2 = {.type = COM_LINE},
.x1 = {.type = COM_POINT},
.p1 = {.type = COM_LINE},
.p = {.type = COM_POINT},
};
}
void draw_from_constraints(struct constraints *c, struct topology *t, struct canvas *cv) {
struct drawing drawing = {};
struct subassembly assemblies[16] = {};
size_t assembly_num;
solve_constraints(c, &drawing, assemblies, &assembly_num);
// Copy over all the parameter values to a new array
// @PERF: Maybe we should just store them in a separate array to start with
double *params = malloc(sizeof(double) * (c->length));
for(size_t i = 0; i < c->length; i++) {
params[i] = c->elements[i].v;
}
place_points(&drawing, params);
free(params);
print_subassemblies(c, assemblies, assembly_num);
begin_drawing(cv);
// for(struct command *current = drawing.root; current != NULL && current != drawing.error; current = current->next) {
// if(current->hidden) continue;
// plot_generic(current->result);
// }
// if(drawing.error != NULL) {
// plot_generic(*drawing.error->arg1);
// plot_generic(*drawing.error->arg2);
// fprintf(stderr, "Solver error detected. Drawing will be incomplete\n");
// }
draw_topology(cv, t);
draw_constraints(cv, c);
end_drawing(cv);
free_drawing(&drawing);
}
int main(int argc, char *argv[]) {
struct constraints constraints = {};
struct topology topo = {};
struct component components[] = {
{.type = COM_POINT},
{.type = COM_POINT},
{.type = COM_POINT},
{.type = COM_LINE},
{.type = COM_LINE},
{.type = COM_POINT},
};
add_fragment(&topo, (struct topology_elem[]){
TOPO_MOVETO(&components[1]),
TOPO_LINETO(&components[5]),
TOPO_LINETO(&components[0]),
TOPO_LINETO(&components[2]),
TOPO_LINETO(&components[1]),
TOPO_END(),
});
add_constraint(&constraints, (struct constraint[]){
PP_DISTANCE(&components[0], &components[1], 13),
PP_DISTANCE(&components[1], &components[2], 7),
PP_DISTANCE(&components[2], &components[0], 7),
POINT_ON_LINE(&components[0], &components[3]),
POINT_ON_LINE(&components[1], &components[3]),
LL_ANGLE(&components[3], &components[4], M_PI/1.7),
POINT_ON_LINE(&components[4], &components[1]),
POINT_ON_LINE(&components[4], &components[5]),
PP_DISTANCE(&components[0], &components[5], 12.8),
CEND(),
});
struct smooth_line line = a_smooth_line();
add_fragment(&topo, (struct topology_elem[]){
TOPO_MOVETO(&line.start),
TOPO_LINETO(&line.corner_start),
TOPO_ARCTO(&line.corner_center, &line.corner_end),
TOPO_LINETO(&line.end),
TOPO_END(),
});
add_constraint(&constraints, (struct constraint[]){
PP_SAME(&line.start, &components[5]),
LL_ANGLE(&components[3], &line.l1, DEG(90)),
POINT_ON_LINE(&line.start, &line.l1),
LL_ANGLE(&line.l2, &line.l1, DEG(90)),
POINT_ON_LINE(&line.corner, &line.l1),
POINT_ON_LINE(&line.corner, &line.l2),
POINT_ON_LINE(&line.end, &line.l2),
PL_DISTANCE(&line.end, &line.l1, 10),
PL_DISTANCE(&line.end, &components[4], 5),
PL_DISTANCE(&line.corner_center, &line.l1, 2),
PL_DISTANCE(&line.corner_center, &line.l2, -2),
LL_ANGLE(&line.l1, &line.perp1, DEG(90)),
POINT_ON_LINE(&line.corner_center, &line.perp1),
POINT_ON_LINE(&line.corner_start, &line.perp1),
POINT_ON_LINE(&line.corner_start, &line.l1),
LL_ANGLE(&line.l2, &line.perp2, DEG(90)),
POINT_ON_LINE(&line.corner_center, &line.perp2),
POINT_ON_LINE(&line.corner_end, &line.perp2),
POINT_ON_LINE(&line.corner_end, &line.l2),
CEND(),
});
struct box box;
a_box(&box, &topo, &constraints);
add_constraint(&constraints, (struct constraint[]){
PL_DISTANCE(&box.side[1], &box.corner[0], 20),
PP_DISTANCE(&line.corner_end, &box.corner[0], 9.5),
PL_DISTANCE(&box.corner[0], &components[3], 20),
CEND(),
});
add_constraint(&constraints, (struct constraint[]){
LL_ANGLE(&components[3], &box.side[1], DEG(90)),
CEND(),
});
struct mid box_enter = a_midpoint();
add_constraint(&constraints, (struct constraint[]){
LL_ANGLE(&box.side[3], &box_enter.l1, DEG(-30)),
POINT_ON_LINE(&box.corner[0], &box_enter.l1),
LL_ANGLE(&box.side[3], &box_enter.l2, DEG(30)),
POINT_ON_LINE(&box.corner[3], &box_enter.l2),
POINT_ON_LINE(&box_enter.l1, &box_enter.x1),
POINT_ON_LINE(&box_enter.l2, &box_enter.x1),
LL_ANGLE(&box.side[3], &box_enter.p1, DEG(90)),
POINT_ON_LINE(&box_enter.x1, &box_enter.p1),
POINT_ON_LINE(&box_enter.p, &box.side[3]),
POINT_ON_LINE(&box_enter.p1, &box_enter.p),
PP_DISTANCE(&box_enter.p, &box.corner[0], 5),
CEND(),
});
struct canvas canvas = {
.state = CANVAS_INIT,
.f = stdout,
};
draw_from_constraints(&constraints, &topo, &canvas);
free_constraints(&constraints);
free_topology(&topo);
}
|