diff options
Diffstat (limited to 'source/blender/modifiers/intern/MOD_smooth.c')
| -rw-r--r-- | source/blender/modifiers/intern/MOD_smooth.c | 269 |
1 files changed, 269 insertions, 0 deletions
diff --git a/source/blender/modifiers/intern/MOD_smooth.c b/source/blender/modifiers/intern/MOD_smooth.c new file mode 100644 index 00000000000..a42bf8abbaf --- /dev/null +++ b/source/blender/modifiers/intern/MOD_smooth.c @@ -0,0 +1,269 @@ +/* +* $Id$ +* +* ***** 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 ***** +* +*/ + +#include "DNA_meshdata_types.h" + +#include "BLI_math.h" + +#include "BKE_cdderivedmesh.h" +#include "BKE_particle.h" +#include "BKE_deform.h" + +#include "MEM_guardedalloc.h" + +#include "MOD_modifiertypes.h" +#include "MOD_util.h" + + +static void initData(ModifierData *md) +{ + SmoothModifierData *smd = (SmoothModifierData*) md; + + smd->fac = 0.5f; + smd->repeat = 1; + smd->flag = MOD_SMOOTH_X | MOD_SMOOTH_Y | MOD_SMOOTH_Z; + smd->defgrp_name[0] = '\0'; +} + +static void copyData(ModifierData *md, ModifierData *target) +{ + SmoothModifierData *smd = (SmoothModifierData*) md; + SmoothModifierData *tsmd = (SmoothModifierData*) target; + + tsmd->fac = smd->fac; + tsmd->repeat = smd->repeat; + tsmd->flag = smd->flag; + strncpy(tsmd->defgrp_name, smd->defgrp_name, 32); +} + +static int isDisabled(ModifierData *md, int useRenderParams) +{ + SmoothModifierData *smd = (SmoothModifierData*) md; + short flag; + + flag = smd->flag & (MOD_SMOOTH_X|MOD_SMOOTH_Y|MOD_SMOOTH_Z); + + /* disable if modifier is off for X, Y and Z or if factor is 0 */ + if((smd->fac == 0.0f) || flag == 0) return 1; + + return 0; +} + +static CustomDataMask requiredDataMask(Object *ob, ModifierData *md) +{ + SmoothModifierData *smd = (SmoothModifierData *)md; + CustomDataMask dataMask = 0; + + /* ask for vertexgroups if we need them */ + if(smd->defgrp_name[0]) dataMask |= (1 << CD_MDEFORMVERT); + + return dataMask; +} + +static void smoothModifier_do( + SmoothModifierData *smd, Object *ob, DerivedMesh *dm, + float (*vertexCos)[3], int numVerts) +{ + MDeformVert *dvert = NULL; + MEdge *medges = NULL; + + int i, j, numDMEdges, defgrp_index; + unsigned char *uctmp; + float *ftmp, fac, facm; + + ftmp = (float*)MEM_callocN(3*sizeof(float)*numVerts, + "smoothmodifier_f"); + if (!ftmp) return; + uctmp = (unsigned char*)MEM_callocN(sizeof(unsigned char)*numVerts, + "smoothmodifier_uc"); + if (!uctmp) { + if (ftmp) MEM_freeN(ftmp); + return; + } + + fac = smd->fac; + facm = 1 - fac; + + medges = dm->getEdgeArray(dm); + numDMEdges = dm->getNumEdges(dm); + + defgrp_index = defgroup_name_index(ob, smd->defgrp_name); + + if (defgrp_index >= 0) + dvert = dm->getVertDataArray(dm, CD_MDEFORMVERT); + + /* NOTICE: this can be optimized a little bit by moving the + * if (dvert) out of the loop, if needed */ + for (j = 0; j < smd->repeat; j++) { + for (i = 0; i < numDMEdges; i++) { + float fvec[3]; + float *v1, *v2; + unsigned int idx1, idx2; + + idx1 = medges[i].v1; + idx2 = medges[i].v2; + + v1 = vertexCos[idx1]; + v2 = vertexCos[idx2]; + + fvec[0] = (v1[0] + v2[0]) / 2.0; + fvec[1] = (v1[1] + v2[1]) / 2.0; + fvec[2] = (v1[2] + v2[2]) / 2.0; + + v1 = &ftmp[idx1*3]; + v2 = &ftmp[idx2*3]; + + if (uctmp[idx1] < 255) { + uctmp[idx1]++; + add_v3_v3(v1, fvec); + } + if (uctmp[idx2] < 255) { + uctmp[idx2]++; + add_v3_v3(v2, fvec); + } + } + + if (dvert) { + for (i = 0; i < numVerts; i++) { + MDeformWeight *dw = NULL; + float f, fm, facw, *fp, *v; + int k; + short flag = smd->flag; + + v = vertexCos[i]; + fp = &ftmp[i*3]; + + for (k = 0; k < dvert[i].totweight; ++k) { + if(dvert[i].dw[k].def_nr == defgrp_index) { + dw = &dvert[i].dw[k]; + break; + } + } + if (!dw) continue; + + f = fac * dw->weight; + fm = 1.0f - f; + + /* fp is the sum of uctmp[i] verts, so must be averaged */ + facw = 0.0f; + if (uctmp[i]) + facw = f / (float)uctmp[i]; + + if (flag & MOD_SMOOTH_X) + v[0] = fm * v[0] + facw * fp[0]; + if (flag & MOD_SMOOTH_Y) + v[1] = fm * v[1] + facw * fp[1]; + if (flag & MOD_SMOOTH_Z) + v[2] = fm * v[2] + facw * fp[2]; + } + } + else { /* no vertex group */ + for (i = 0; i < numVerts; i++) { + float facw, *fp, *v; + short flag = smd->flag; + + v = vertexCos[i]; + fp = &ftmp[i*3]; + + /* fp is the sum of uctmp[i] verts, so must be averaged */ + facw = 0.0f; + if (uctmp[i]) + facw = fac / (float)uctmp[i]; + + if (flag & MOD_SMOOTH_X) + v[0] = facm * v[0] + facw * fp[0]; + if (flag & MOD_SMOOTH_Y) + v[1] = facm * v[1] + facw * fp[1]; + if (flag & MOD_SMOOTH_Z) + v[2] = facm * v[2] + facw * fp[2]; + } + + } + + memset(ftmp, 0, 3*sizeof(float)*numVerts); + memset(uctmp, 0, sizeof(unsigned char)*numVerts); + } + + MEM_freeN(ftmp); + MEM_freeN(uctmp); +} + +static void deformVerts( + ModifierData *md, Object *ob, DerivedMesh *derivedData, + float (*vertexCos)[3], int numVerts, int useRenderParams, int isFinalCalc) +{ + DerivedMesh *dm= get_dm(md->scene, ob, NULL, derivedData, NULL, 0); + + smoothModifier_do((SmoothModifierData *)md, ob, dm, + vertexCos, numVerts); + + if(dm != derivedData) + dm->release(dm); +} + +static void deformVertsEM( + ModifierData *md, Object *ob, struct EditMesh *editData, + DerivedMesh *derivedData, float (*vertexCos)[3], int numVerts) +{ + DerivedMesh *dm= get_dm(md->scene, ob, editData, derivedData, NULL, 0); + + smoothModifier_do((SmoothModifierData *)md, ob, dm, + vertexCos, numVerts); + + if(dm != derivedData) + dm->release(dm); +} + + +ModifierTypeInfo modifierType_Smooth = { + /* name */ "Smooth", + /* structName */ "SmoothModifierData", + /* structSize */ sizeof(SmoothModifierData), + /* type */ eModifierTypeType_OnlyDeform, + /* flags */ eModifierTypeFlag_AcceptsMesh + | eModifierTypeFlag_SupportsEditmode, + + /* copyData */ copyData, + /* deformVerts */ deformVerts, + /* deformVertsEM */ deformVertsEM, + /* deformMatricesEM */ 0, + /* applyModifier */ 0, + /* applyModifierEM */ 0, + /* initData */ initData, + /* requiredDataMask */ requiredDataMask, + /* freeData */ 0, + /* isDisabled */ isDisabled, + /* updateDepgraph */ 0, + /* dependsOnTime */ 0, + /* foreachObjectLink */ 0, + /* foreachIDLink */ 0, +}; |