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
|
#include "MEM_guardedalloc.h"
#include "BKE_utildefines.h"
#include "BLI_ghash.h"
#include "BLI_memarena.h"
#include "BLI_blenlib.h"
#include "BLI_arithb.h"
#include "bmesh.h"
#include "bmesh_operators_private.h"
#define EXT_INPUT 1
#define EXT_KEEP 2
#define EXT_DEL 4
void extrude_edge_context_exec(BMesh *bm, BMOperator *op)
{
BMOperator dupeop, delop;
BMOIter siter;
BMIter iter, fiter, viter;
BMEdge *e, *newedge, *e2, *ce;
BMLoop *l, *l2;
BMVert *verts[4], *v, *v2;
BMFace *f;
int rlen, found, delorig=0, i, reverse;
/*initialize our sub-operators*/
BMO_Init_Op(&dupeop, "dupe");
BMO_Flag_Buffer(bm, op, "edgefacein", EXT_INPUT);
/*if one flagged face is bordered by an unflagged face, then we delete
original geometry.*/
for (e=BMIter_New(&iter, bm, BM_EDGES_OF_MESH, NULL);e;e=BMIter_Step(&iter)) {
if (!BMO_TestFlag(bm, e, EXT_INPUT)) continue;
found = 0;
f = BMIter_New(&fiter, bm, BM_FACES_OF_EDGE, e);
for (rlen=0; f; f=BMIter_Step(&fiter), rlen++) {
if (!BMO_TestFlag(bm, f, EXT_INPUT)) {
found = 1;
delorig = 1;
break;
}
}
if (!found && (rlen > 1)) BMO_SetFlag(bm, e, EXT_DEL);
}
/*calculate verts to delete*/
for (v = BMIter_New(&iter, bm, BM_VERTS_OF_MESH, NULL); v; v=BMIter_Step(&iter)) {
found = 0;
l = BMIter_New(&viter, bm, BM_LOOPS_OF_VERT, v);
for (; l; l=BMIter_Step(&viter)) {
if (!BMO_TestFlag(bm, l->e, EXT_INPUT)) {
found = 1;
break;
}
if (!BMO_TestFlag(bm, l->f, EXT_INPUT)) {
found = 1;
break;
}
if (found) break;
}
if (!found) {
BMO_SetFlag(bm, v, EXT_DEL);
}
}
for (f=BMIter_New(&fiter, bm, BM_FACES_OF_MESH, NULL); f; f=BMIter_Step(&fiter)) {
if (BMO_TestFlag(bm, f, EXT_INPUT))
BMO_SetFlag(bm, f, EXT_DEL);
}
if (delorig) BMO_InitOpf(bm, &delop, "del geom=%fvef context=%d",
EXT_DEL, DEL_ONLYTAGGED);
BMO_CopySlot(op, &dupeop, "edgefacein", "geom");
BMO_Exec_Op(bm, &dupeop);
if (delorig) BMO_Exec_Op(bm, &delop);
/*if not delorig, reverse loops of original faces*/
if (!delorig) {
for (f=BMIter_New(&iter, bm, BM_FACES_OF_MESH, NULL); f; f=BMIter_Step(&iter)) {
if (BMO_TestFlag(bm, f, EXT_INPUT)) {
BM_flip_normal(bm, f);
}
}
}
BMO_CopySlot(&dupeop, op, "newout", "geomout");
e = BMO_IterNew(&siter, bm, &dupeop, "boundarymap");
for (; e; e=BMO_IterStep(&siter)) {
if (BMO_InMap(bm, op, "exclude", e)) continue;
newedge = BMO_IterMapVal(&siter);
newedge = *(BMEdge**)newedge;
if (!newedge) continue;
if (!newedge->loop) ce = e;
else ce = newedge;
if (ce->loop && (ce->loop->v == ce->v1)) {
verts[0] = e->v1;
verts[1] = e->v2;
verts[2] = newedge->v2;
verts[3] = newedge->v1;
} else {
verts[3] = e->v1;
verts[2] = e->v2;
verts[1] = newedge->v2;
verts[0] = newedge->v1;
}
/*not sure what to do about example face, pass NULL for now.*/
f = BM_Make_Quadtriangle(bm, verts, NULL, 4, NULL, 0);
/*copy attributes*/
l=BMIter_New(&iter, bm, BM_LOOPS_OF_FACE, f);
for (; l; l=BMIter_Step(&iter)) {
if (l->e != e && l->e != newedge) continue;
l2 = l->radial.next->data;
if (l2 == l) {
l2 = newedge->loop;
BM_Copy_Attributes(bm, bm, l2->f, l->f);
BM_Copy_Attributes(bm, bm, l2, l);
l2 = (BMLoop*) l2->head.next;
l = (BMLoop*) l->head.next;
BM_Copy_Attributes(bm, bm, l2, l);
} else {
BM_Copy_Attributes(bm, bm, l2->f, l->f);
/*copy data*/
if (l2->v == l->v) {
BM_Copy_Attributes(bm, bm, l2, l);
l2 = (BMLoop*) l2->head.next;
l = (BMLoop*) l->head.next;
BM_Copy_Attributes(bm, bm, l2, l);
} else {
l2 = (BMLoop*) l2->head.next;
BM_Copy_Attributes(bm, bm, l2, l);
l2 = (BMLoop*) l2->head.prev;
l = (BMLoop*) l->head.next;
BM_Copy_Attributes(bm, bm, l2, l);
}
}
}
}
/*link isolated verts*/
v = BMO_IterNew(&siter, bm, &dupeop, "isovertmap");
for (; v; v=BMO_IterStep(&siter)) {
v2 = *((void**)BMO_IterMapVal(&siter));
BM_Make_Edge(bm, v, v2, v->edge, 1);
}
/*cleanup*/
if (delorig) BMO_Finish_Op(bm, &delop);
BMO_Finish_Op(bm, &dupeop);
}
|
