Sergey Sharybin
aa4cb95a5c
This is mainly to make physics modifiers being able to work with it. For other cases this main is not needed.
370 lines
11 KiB
C
370 lines
11 KiB
C
/*
|
|
* ***** 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_mirror.c
|
|
* \ingroup modifiers
|
|
*/
|
|
|
|
|
|
#include "DNA_meshdata_types.h"
|
|
#include "DNA_object_types.h"
|
|
|
|
#include "BLI_math.h"
|
|
|
|
#include "BKE_cdderivedmesh.h"
|
|
#include "BKE_modifier.h"
|
|
#include "BKE_deform.h"
|
|
|
|
#include "MEM_guardedalloc.h"
|
|
#include "depsgraph_private.h"
|
|
|
|
static void initData(ModifierData *md)
|
|
{
|
|
MirrorModifierData *mmd = (MirrorModifierData *) md;
|
|
|
|
mmd->flag |= (MOD_MIR_AXIS_X | MOD_MIR_VGROUP);
|
|
mmd->tolerance = 0.001;
|
|
mmd->mirror_ob = NULL;
|
|
}
|
|
|
|
static void copyData(ModifierData *md, ModifierData *target)
|
|
{
|
|
#if 0
|
|
MirrorModifierData *mmd = (MirrorModifierData *) md;
|
|
MirrorModifierData *tmmd = (MirrorModifierData *) target;
|
|
#endif
|
|
modifier_copyData_generic(md, target);
|
|
}
|
|
|
|
static void foreachObjectLink(ModifierData *md, Object *ob,
|
|
void (*walk)(void *userData, Object *ob, Object **obpoin),
|
|
void *userData)
|
|
{
|
|
MirrorModifierData *mmd = (MirrorModifierData *) md;
|
|
|
|
walk(userData, ob, &mmd->mirror_ob);
|
|
}
|
|
|
|
static void updateDepgraph(ModifierData *md, DagForest *forest,
|
|
struct Main *UNUSED(bmain),
|
|
struct Scene *UNUSED(scene),
|
|
Object *UNUSED(ob),
|
|
DagNode *obNode)
|
|
{
|
|
MirrorModifierData *mmd = (MirrorModifierData *) md;
|
|
|
|
if (mmd->mirror_ob) {
|
|
DagNode *latNode = dag_get_node(forest, mmd->mirror_ob);
|
|
|
|
dag_add_relation(forest, latNode, obNode,
|
|
DAG_RL_DATA_DATA | DAG_RL_OB_DATA, "Mirror Modifier");
|
|
}
|
|
}
|
|
|
|
static DerivedMesh *doMirrorOnAxis(MirrorModifierData *mmd,
|
|
Object *ob,
|
|
DerivedMesh *dm,
|
|
int axis)
|
|
{
|
|
const float tolerance_sq = mmd->tolerance * mmd->tolerance;
|
|
const int do_vtargetmap = !(mmd->flag & MOD_MIR_NO_MERGE);
|
|
int tot_vtargetmap = 0; /* total merge vertices */
|
|
|
|
DerivedMesh *result;
|
|
const int maxVerts = dm->getNumVerts(dm);
|
|
const int maxEdges = dm->getNumEdges(dm);
|
|
const int maxLoops = dm->getNumLoops(dm);
|
|
const int maxPolys = dm->getNumPolys(dm);
|
|
MVert *mv, *mv_prev;
|
|
MEdge *me;
|
|
MLoop *ml;
|
|
MPoly *mp;
|
|
float mtx[4][4];
|
|
int i;
|
|
int a, totshape;
|
|
int *vtargetmap = NULL, *vtmap_a = NULL, *vtmap_b = NULL;
|
|
|
|
/* mtx is the mirror transformation */
|
|
unit_m4(mtx);
|
|
mtx[axis][axis] = -1.0f;
|
|
|
|
if (mmd->mirror_ob) {
|
|
float tmp[4][4];
|
|
float itmp[4][4];
|
|
|
|
/* tmp is a transform from coords relative to the object's own origin,
|
|
* to coords relative to the mirror object origin */
|
|
invert_m4_m4(tmp, mmd->mirror_ob->obmat);
|
|
mul_m4_m4m4(tmp, tmp, ob->obmat);
|
|
|
|
/* itmp is the reverse transform back to origin-relative coordinates */
|
|
invert_m4_m4(itmp, tmp);
|
|
|
|
/* combine matrices to get a single matrix that translates coordinates into
|
|
* mirror-object-relative space, does the mirror, and translates back to
|
|
* origin-relative space */
|
|
mul_m4_m4m4(mtx, mtx, tmp);
|
|
mul_m4_m4m4(mtx, itmp, mtx);
|
|
}
|
|
|
|
result = CDDM_from_template(dm, maxVerts * 2, maxEdges * 2, 0, maxLoops * 2, maxPolys * 2);
|
|
|
|
/*copy customdata to original geometry*/
|
|
DM_copy_vert_data(dm, result, 0, 0, maxVerts);
|
|
DM_copy_edge_data(dm, result, 0, 0, maxEdges);
|
|
DM_copy_loop_data(dm, result, 0, 0, maxLoops);
|
|
DM_copy_poly_data(dm, result, 0, 0, maxPolys);
|
|
|
|
|
|
/* subsurf for eg wont have mesh data in the */
|
|
/* now add mvert/medge/mface layers */
|
|
|
|
if (!CustomData_has_layer(&dm->vertData, CD_MVERT)) {
|
|
dm->copyVertArray(dm, CDDM_get_verts(result));
|
|
}
|
|
if (!CustomData_has_layer(&dm->edgeData, CD_MEDGE)) {
|
|
dm->copyEdgeArray(dm, CDDM_get_edges(result));
|
|
}
|
|
if (!CustomData_has_layer(&dm->polyData, CD_MPOLY)) {
|
|
dm->copyLoopArray(dm, CDDM_get_loops(result));
|
|
dm->copyPolyArray(dm, CDDM_get_polys(result));
|
|
}
|
|
|
|
/* copy customdata to new geometry,
|
|
* copy from its self because this data may have been created in the checks above */
|
|
DM_copy_vert_data(result, result, 0, maxVerts, maxVerts);
|
|
DM_copy_edge_data(result, result, 0, maxEdges, maxEdges);
|
|
/* loops are copied later */
|
|
DM_copy_poly_data(result, result, 0, maxPolys, maxPolys);
|
|
|
|
if (do_vtargetmap) {
|
|
/* second half is filled with -1 */
|
|
vtargetmap = MEM_mallocN(sizeof(int) * maxVerts * 2, "MOD_mirror tarmap");
|
|
|
|
vtmap_a = vtargetmap;
|
|
vtmap_b = vtargetmap + maxVerts;
|
|
}
|
|
|
|
/* mirror vertex coordinates */
|
|
mv_prev = CDDM_get_verts(result);
|
|
mv = mv_prev + maxVerts;
|
|
for (i = 0; i < maxVerts; i++, mv++, mv_prev++) {
|
|
mul_m4_v3(mtx, mv->co);
|
|
|
|
if (do_vtargetmap) {
|
|
/* compare location of the original and mirrored vertex, to see if they
|
|
* should be mapped for merging */
|
|
if (UNLIKELY(len_squared_v3v3(mv_prev->co, mv->co) < tolerance_sq)) {
|
|
*vtmap_a = maxVerts + i;
|
|
tot_vtargetmap++;
|
|
|
|
/* average location */
|
|
mid_v3_v3v3(mv->co, mv_prev->co, mv->co);
|
|
copy_v3_v3(mv_prev->co, mv->co);
|
|
}
|
|
else {
|
|
*vtmap_a = -1;
|
|
}
|
|
|
|
*vtmap_b = -1; /* fill here to avoid 2x loops */
|
|
|
|
vtmap_a++;
|
|
vtmap_b++;
|
|
}
|
|
}
|
|
|
|
/* handle shape keys */
|
|
totshape = CustomData_number_of_layers(&result->vertData, CD_SHAPEKEY);
|
|
for (a = 0; a < totshape; a++) {
|
|
float (*cos)[3] = CustomData_get_layer_n(&result->vertData, CD_SHAPEKEY, a);
|
|
for (i = maxVerts; i < result->numVertData; i++) {
|
|
mul_m4_v3(mtx, cos[i]);
|
|
}
|
|
}
|
|
|
|
/* adjust mirrored edge vertex indices */
|
|
me = CDDM_get_edges(result) + maxEdges;
|
|
for (i = 0; i < maxEdges; i++, me++) {
|
|
me->v1 += maxVerts;
|
|
me->v2 += maxVerts;
|
|
}
|
|
|
|
/* adjust mirrored poly loopstart indices, and reverse loop order (normals) */
|
|
mp = CDDM_get_polys(result) + maxPolys;
|
|
ml = CDDM_get_loops(result);
|
|
for (i = 0; i < maxPolys; i++, mp++) {
|
|
MLoop *ml2;
|
|
int j, e;
|
|
|
|
/* reverse the loop, but we keep the first vertex in the face the same,
|
|
* to ensure that quads are split the same way as on the other side */
|
|
DM_copy_loop_data(result, result, mp->loopstart, mp->loopstart + maxLoops, 1);
|
|
for (j = 1; j < mp->totloop; j++)
|
|
DM_copy_loop_data(result, result, mp->loopstart + j, mp->loopstart + maxLoops + mp->totloop - j, 1);
|
|
|
|
ml2 = ml + mp->loopstart + maxLoops;
|
|
e = ml2[0].e;
|
|
for (j = 0; j < mp->totloop - 1; j++) {
|
|
ml2[j].e = ml2[j + 1].e;
|
|
}
|
|
ml2[mp->totloop - 1].e = e;
|
|
|
|
mp->loopstart += maxLoops;
|
|
}
|
|
|
|
/* adjust mirrored loop vertex and edge indices */
|
|
ml = CDDM_get_loops(result) + maxLoops;
|
|
for (i = 0; i < maxLoops; i++, ml++) {
|
|
ml->v += maxVerts;
|
|
ml->e += maxEdges;
|
|
}
|
|
|
|
/* handle uvs,
|
|
* let tessface recalc handle updating the MTFace data */
|
|
if (mmd->flag & (MOD_MIR_MIRROR_U | MOD_MIR_MIRROR_V)) {
|
|
const bool do_mirr_u = (mmd->flag & MOD_MIR_MIRROR_U) != 0;
|
|
const bool do_mirr_v = (mmd->flag & MOD_MIR_MIRROR_V) != 0;
|
|
|
|
const int totuv = CustomData_number_of_layers(&result->loopData, CD_MLOOPUV);
|
|
|
|
for (a = 0; a < totuv; a++) {
|
|
MLoopUV *dmloopuv = CustomData_get_layer_n(&result->loopData, CD_MLOOPUV, a);
|
|
int j = maxLoops;
|
|
dmloopuv += j; /* second set of loops only */
|
|
for (; j-- > 0; dmloopuv++) {
|
|
if (do_mirr_u) dmloopuv->uv[0] = 1.0f - dmloopuv->uv[0];
|
|
if (do_mirr_v) dmloopuv->uv[1] = 1.0f - dmloopuv->uv[1];
|
|
}
|
|
}
|
|
}
|
|
|
|
/* handle vgroup stuff */
|
|
if ((mmd->flag & MOD_MIR_VGROUP) && CustomData_has_layer(&result->vertData, CD_MDEFORMVERT)) {
|
|
MDeformVert *dvert = (MDeformVert *) CustomData_get_layer(&result->vertData, CD_MDEFORMVERT) + maxVerts;
|
|
int *flip_map = NULL, flip_map_len = 0;
|
|
|
|
flip_map = defgroup_flip_map(ob, &flip_map_len, false);
|
|
|
|
if (flip_map) {
|
|
for (i = 0; i < maxVerts; dvert++, i++) {
|
|
/* merged vertices get both groups, others get flipped */
|
|
if (do_vtargetmap && (vtargetmap[i] != -1))
|
|
defvert_flip_merged(dvert, flip_map, flip_map_len);
|
|
else
|
|
defvert_flip(dvert, flip_map, flip_map_len);
|
|
}
|
|
|
|
MEM_freeN(flip_map);
|
|
}
|
|
}
|
|
|
|
if (do_vtargetmap) {
|
|
/* slow - so only call if one or more merge verts are found,
|
|
* users may leave this on and not realize there is nothing to merge - campbell */
|
|
if (tot_vtargetmap) {
|
|
result = CDDM_merge_verts(result, vtargetmap, tot_vtargetmap, CDDM_MERGE_VERTS_DUMP_IF_MAPPED);
|
|
}
|
|
MEM_freeN(vtargetmap);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static DerivedMesh *mirrorModifier__doMirror(MirrorModifierData *mmd,
|
|
Object *ob, DerivedMesh *dm)
|
|
{
|
|
DerivedMesh *result = dm;
|
|
|
|
/* check which axes have been toggled and mirror accordingly */
|
|
if (mmd->flag & MOD_MIR_AXIS_X) {
|
|
result = doMirrorOnAxis(mmd, ob, result, 0);
|
|
}
|
|
if (mmd->flag & MOD_MIR_AXIS_Y) {
|
|
DerivedMesh *tmp = result;
|
|
result = doMirrorOnAxis(mmd, ob, result, 1);
|
|
if (tmp != dm) tmp->release(tmp); /* free intermediate results */
|
|
}
|
|
if (mmd->flag & MOD_MIR_AXIS_Z) {
|
|
DerivedMesh *tmp = result;
|
|
result = doMirrorOnAxis(mmd, ob, result, 2);
|
|
if (tmp != dm) tmp->release(tmp); /* free intermediate results */
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static DerivedMesh *applyModifier(ModifierData *md, Object *ob,
|
|
DerivedMesh *derivedData,
|
|
ModifierApplyFlag UNUSED(flag))
|
|
{
|
|
DerivedMesh *result;
|
|
MirrorModifierData *mmd = (MirrorModifierData *) md;
|
|
|
|
result = mirrorModifier__doMirror(mmd, ob, derivedData);
|
|
|
|
if (result != derivedData)
|
|
result->dirty |= DM_DIRTY_NORMALS;
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
ModifierTypeInfo modifierType_Mirror = {
|
|
/* name */ "Mirror",
|
|
/* structName */ "MirrorModifierData",
|
|
/* structSize */ sizeof(MirrorModifierData),
|
|
/* type */ eModifierTypeType_Constructive,
|
|
/* flags */ eModifierTypeFlag_AcceptsMesh |
|
|
eModifierTypeFlag_SupportsMapping |
|
|
eModifierTypeFlag_SupportsEditmode |
|
|
eModifierTypeFlag_EnableInEditmode |
|
|
eModifierTypeFlag_AcceptsCVs |
|
|
/* this is only the case when 'MOD_MIR_VGROUP' is used */
|
|
eModifierTypeFlag_UsesPreview,
|
|
|
|
/* copyData */ copyData,
|
|
/* deformVerts */ NULL,
|
|
/* deformMatrices */ NULL,
|
|
/* deformVertsEM */ NULL,
|
|
/* deformMatricesEM */ NULL,
|
|
/* applyModifier */ applyModifier,
|
|
/* applyModifierEM */ NULL,
|
|
/* initData */ initData,
|
|
/* requiredDataMask */ NULL,
|
|
/* freeData */ NULL,
|
|
/* isDisabled */ NULL,
|
|
/* updateDepgraph */ updateDepgraph,
|
|
/* dependsOnTime */ NULL,
|
|
/* dependsOnNormals */ NULL,
|
|
/* foreachObjectLink */ foreachObjectLink,
|
|
/* foreachIDLink */ NULL,
|
|
/* foreachTexLink */ NULL,
|
|
};
|