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
|
#include "cad.h"
struct mid {
struct component p1;
struct component p2;
struct component lb;
struct component l1;
struct component l2;
struct component x1;
struct component p;
struct component m;
};
void a_midpoint(struct mid *mid, struct topology *topo, struct constraints *constr) {
*mid = (struct mid){
.p1 = {.type = COM_POINT},
.p2 = {.type = COM_POINT},
.lb = {.type = COM_LINE},
.l1 = {.type = COM_LINE},
.l2 = {.type = COM_LINE},
.x1 = {.type = COM_POINT},
.p = {.type = COM_LINE},
.m = {.type = COM_POINT},
};
if(constr != NULL) {
add_constraint(constr, (struct constraint[]){
POINT_ON_LINE(&mid->p1, &mid->lb),
POINT_ON_LINE(&mid->p2, &mid->lb),
LL_ANGLE(&mid->lb, &mid->l1, DEG(-30)),
POINT_ON_LINE(&mid->p1, &mid->l1),
LL_ANGLE(&mid->lb, &mid->l2, DEG(30)),
POINT_ON_LINE(&mid->p2, &mid->l2),
POINT_ON_LINE(&mid->x1, &mid->l1),
POINT_ON_LINE(&mid->x1, &mid->l2),
LL_ANGLE(&mid->lb, &mid->p, DEG(90)),
POINT_ON_LINE(&mid->x1, &mid->p),
POINT_ON_LINE(&mid->m, &mid->lb),
POINT_ON_LINE(&mid->m, &mid->p),
CEND(),
});
}
}
struct box {
struct component bottom_left;
struct component bottom_right;
struct component top_right;
struct component top_left;
struct component bottom;
struct component right;
struct component top;
struct component left;
struct mid left_mid;
struct mid right_mid;
};
void a_box(struct box *box, struct topology *topo, struct constraints *constr) {
assert(box != NULL);
*box = (struct box){
.bottom_left = {.type = COM_POINT},
.bottom_right = {.type = COM_POINT},
.top_right = {.type = COM_POINT},
.top_left = {.type = COM_POINT},
.bottom = {.type = COM_LINE},
.right = {.type = COM_LINE},
.top = {.type = COM_LINE},
.left = {.type = COM_LINE},
};
a_midpoint(&box->left_mid, topo, constr);
a_midpoint(&box->right_mid, topo, constr);
if(topo != NULL) {
add_fragment(topo, (struct topology_elem[]){
TOPO_MOVETO(&box->bottom_left),
TOPO_LINETO(&box->bottom_right),
TOPO_LINETO(&box->top_right),
TOPO_LINETO(&box->top_left),
TOPO_LINETO(&box->bottom_left),
TOPO_END(),
});
}
if(constr != NULL) {
add_constraint(constr, (struct constraint[]){
POINT_ON_LINE(&box->bottom_left, &box->bottom),
POINT_ON_LINE(&box->bottom_right, &box->bottom),
POINT_ON_LINE(&box->bottom_right, &box->right),
POINT_ON_LINE(&box->top_right, &box->right),
POINT_ON_LINE(&box->top_right, &box->top),
POINT_ON_LINE(&box->top_left, &box->top),
POINT_ON_LINE(&box->bottom_left, &box->left),
POINT_ON_LINE(&box->top_left, &box->left),
LL_ANGLE(&box->left, &box->bottom, DEG(90)),
LL_ANGLE(&box->right, &box->top, DEG(90)),
LL_ANGLE(&box->top, &box->left, DEG(90)),
PP_DISTANCE(&box->bottom_left, &box->bottom_right, 7),
PP_DISTANCE(&box->bottom_right, &box->top_right, 3),
// Bind the mids
PP_SAME(&box->left_mid.p1, &box->top_left),
PP_SAME(&box->left_mid.p2, &box->bottom_left),
PP_SAME(&box->right_mid.p1, &box->bottom_right),
PP_SAME(&box->right_mid.p2, &box->top_right),
CEND(),
});
}
}
void draw_from_constraints(struct constraints *c, struct topology *t, struct canvas *cv) {
struct drawing drawing = {};
bool rc = solve_constraints(c, &drawing);
assert(rc);
// 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);
begin_drawing(cv);
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 box box1;
a_box(&box1, &topo, &constraints);
struct box box2;
a_box(&box2, &topo, &constraints);
struct box box3;
a_box(&box3, &topo, &constraints);
add_constraint(&constraints, (struct constraint[]){
POINT_ON_LINE(&box2.bottom_left, &box1.bottom),
PP_DISTANCE(&box1.bottom_right, &box2.bottom_left, 3),
LL_ANGLE(&box2.bottom, &box1.bottom, 0),
POINT_ON_LINE(&box3.bottom_left, &box1.bottom),
PP_DISTANCE(&box2.bottom_right, &box3.bottom_left, 3),
LL_ANGLE(&box3.bottom, &box2.bottom, 0),
CEND(),
});
add_fragment(&topo, (struct topology_elem[]){
TOPO_MOVETO(&box1.right_mid.m),
TOPO_LINETO(&box2.left_mid.m),
TOPO_MOVETO(&box2.right_mid.m),
TOPO_LINETO(&box3.left_mid.m),
TOPO_END(),
});
struct canvas canvas = {
.state = CANVAS_INIT,
.f = stdout,
};
draw_from_constraints(&constraints, &topo, &canvas);
free_constraints(&constraints);
free_topology(&topo);
}
|
