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
|
/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* 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.
*
* The Original Code is Copyright (C) 2005 by the Blender Foundation.
* All rights reserved.
*
* Contributor(s): Daniel Dunbar
* Ton Roosendaal,
* Ben Batt,
* Brecht Van Lommel,
* Campbell Barton
*
* ***** END GPL LICENSE BLOCK *****
*
*/
/** \file blender/modifiers/intern/MOD_decimate.c
* \ingroup modifiers
*/
#include "DNA_object_types.h"
#include "BLI_math.h"
#include "BLI_utildefines.h"
#include "MEM_guardedalloc.h"
#include "BKE_modifier.h"
#include "BKE_deform.h"
#include "BKE_cdderivedmesh.h"
#include "bmesh.h"
#include "bmesh_tools.h"
// #define USE_TIMEIT
#ifdef USE_TIMEIT
# include "PIL_time.h"
# include "PIL_time_utildefines.h"
#endif
#include "MOD_util.h"
static void initData(ModifierData *md)
{
DecimateModifierData *dmd = (DecimateModifierData *) md;
dmd->percent = 1.0;
dmd->angle = DEG2RADF(5.0f);
}
static void copyData(ModifierData *md, ModifierData *target)
{
#if 0
DecimateModifierData *dmd = (DecimateModifierData *) md;
DecimateModifierData *tdmd = (DecimateModifierData *) target;
#endif
modifier_copyData_generic(md, target);
}
static CustomDataMask requiredDataMask(Object *UNUSED(ob), ModifierData *md)
{
DecimateModifierData *dmd = (DecimateModifierData *) md;
CustomDataMask dataMask = 0;
/* ask for vertexgroups if we need them */
if (dmd->defgrp_name[0]) dataMask |= CD_MASK_MDEFORMVERT;
return dataMask;
}
static DerivedMesh *applyModifier(ModifierData *md, Object *ob,
DerivedMesh *derivedData,
ModifierApplyFlag UNUSED(flag))
{
DecimateModifierData *dmd = (DecimateModifierData *) md;
DerivedMesh *dm = derivedData, *result = NULL;
BMesh *bm;
bool calc_face_normal;
float *vweights = NULL;
#ifdef USE_TIMEIT
TIMEIT_START(decim);
#endif
/* set up front so we dont show invalid info in the UI */
dmd->face_count = dm->getNumPolys(dm);
switch (dmd->mode) {
case MOD_DECIM_MODE_COLLAPSE:
if (dmd->percent == 1.0f) {
return dm;
}
calc_face_normal = true;
break;
case MOD_DECIM_MODE_UNSUBDIV:
if (dmd->iter == 0) {
return dm;
}
calc_face_normal = false;
break;
case MOD_DECIM_MODE_DISSOLVE:
if (dmd->angle == 0.0f) {
return dm;
}
calc_face_normal = true;
break;
default:
return dm;
}
if (dmd->face_count <= 3) {
modifier_setError(md, "Modifier requires more than 3 input faces");
return dm;
}
if (dmd->mode == MOD_DECIM_MODE_COLLAPSE) {
if (dmd->defgrp_name[0]) {
MDeformVert *dvert;
int defgrp_index;
modifier_get_vgroup(ob, dm, dmd->defgrp_name, &dvert, &defgrp_index);
if (dvert) {
const unsigned int vert_tot = dm->getNumVerts(dm);
unsigned int i;
vweights = MEM_mallocN(vert_tot * sizeof(float), __func__);
if (dmd->flag & MOD_DECIM_FLAG_INVERT_VGROUP) {
for (i = 0; i < vert_tot; i++) {
const float f = 1.0f - defvert_find_weight(&dvert[i], defgrp_index);
vweights[i] = f > BM_MESH_DECIM_WEIGHT_EPS ? (1.0f / f) : BM_MESH_DECIM_WEIGHT_MAX;
}
}
else {
for (i = 0; i < vert_tot; i++) {
const float f = defvert_find_weight(&dvert[i], defgrp_index);
vweights[i] = f > BM_MESH_DECIM_WEIGHT_EPS ? (1.0f / f) : BM_MESH_DECIM_WEIGHT_MAX;
}
}
}
}
}
bm = DM_to_bmesh(dm, calc_face_normal);
switch (dmd->mode) {
case MOD_DECIM_MODE_COLLAPSE:
{
const int do_triangulate = (dmd->flag & MOD_DECIM_FLAG_TRIANGULATE) != 0;
BM_mesh_decimate_collapse(bm, dmd->percent, vweights, do_triangulate);
break;
}
case MOD_DECIM_MODE_UNSUBDIV:
{
BM_mesh_decimate_unsubdivide(bm, dmd->iter);
break;
}
case MOD_DECIM_MODE_DISSOLVE:
{
const int do_dissolve_boundaries = (dmd->flag & MOD_DECIM_FLAG_ALL_BOUNDARY_VERTS) != 0;
BM_mesh_decimate_dissolve(bm, dmd->angle, do_dissolve_boundaries, (BMO_Delimit)dmd->delimit);
break;
}
}
if (vweights) {
MEM_freeN(vweights);
}
/* update for display only */
dmd->face_count = bm->totface;
result = CDDM_from_bmesh(bm, false);
BLI_assert(bm->vtoolflagpool == NULL &&
bm->etoolflagpool == NULL &&
bm->ftoolflagpool == NULL); /* make sure we never alloc'd these */
BLI_assert(bm->vtable == NULL &&
bm->etable == NULL &&
bm->ftable == NULL);
BM_mesh_free(bm);
#ifdef USE_TIMEIT
TIMEIT_END(decim);
#endif
result->dirty = DM_DIRTY_NORMALS;
return result;
}
ModifierTypeInfo modifierType_Decimate = {
/* name */ "Decimate",
/* structName */ "DecimateModifierData",
/* structSize */ sizeof(DecimateModifierData),
/* type */ eModifierTypeType_Nonconstructive,
/* flags */ eModifierTypeFlag_AcceptsMesh |
eModifierTypeFlag_AcceptsCVs,
/* copyData */ copyData,
/* deformVerts */ NULL,
/* deformMatrices */ NULL,
/* deformVertsEM */ NULL,
/* deformMatricesEM */ NULL,
/* applyModifier */ applyModifier,
/* applyModifierEM */ NULL,
/* initData */ initData,
/* requiredDataMask */ requiredDataMask,
/* freeData */ NULL,
/* isDisabled */ NULL,
/* updateDepgraph */ NULL,
/* dependsOnTime */ NULL,
/* dependsOnNormals */ NULL,
/* foreachObjectLink */ NULL,
/* foreachIDLink */ NULL,
/* foreachTexLink */ NULL,
};
|
