Sybren A. Stüvel
334b55fd2e
The contents of the ModifierEvalContext struct are constant while iterating over the modifier stack. The struct thus should be only created once, outside any loop over the modifiers.
280 lines
7.1 KiB
C
280 lines
7.1 KiB
C
/*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2005 by the Blender Foundation.
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* All rights reserved.
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*
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* Contributor(s): Daniel Dunbar
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* Ton Roosendaal,
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* Ben Batt,
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* Brecht Van Lommel,
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* Campbell Barton
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*
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* ***** END GPL LICENSE BLOCK *****
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*
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*/
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/** \file blender/modifiers/intern/MOD_smooth.c
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* \ingroup modifiers
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*/
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#include "DNA_meshdata_types.h"
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#include "BLI_math.h"
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#include "BLI_utildefines.h"
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#include "MEM_guardedalloc.h"
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#include "BKE_cdderivedmesh.h"
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#include "BKE_particle.h"
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#include "BKE_deform.h"
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#include "MOD_modifiertypes.h"
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#include "MOD_util.h"
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static void initData(ModifierData *md)
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{
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SmoothModifierData *smd = (SmoothModifierData *) md;
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smd->fac = 0.5f;
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smd->repeat = 1;
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smd->flag = MOD_SMOOTH_X | MOD_SMOOTH_Y | MOD_SMOOTH_Z;
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smd->defgrp_name[0] = '\0';
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}
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static void copyData(ModifierData *md, ModifierData *target)
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{
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#if 0
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SmoothModifierData *smd = (SmoothModifierData *) md;
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SmoothModifierData *tsmd = (SmoothModifierData *) target;
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#endif
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modifier_copyData_generic(md, target);
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}
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static bool isDisabled(ModifierData *md, int UNUSED(useRenderParams))
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{
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SmoothModifierData *smd = (SmoothModifierData *) md;
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short flag;
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flag = smd->flag & (MOD_SMOOTH_X | MOD_SMOOTH_Y | MOD_SMOOTH_Z);
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/* disable if modifier is off for X, Y and Z or if factor is 0 */
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if ((smd->fac == 0.0f) || flag == 0) return 1;
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return 0;
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}
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static CustomDataMask requiredDataMask(Object *UNUSED(ob), ModifierData *md)
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{
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SmoothModifierData *smd = (SmoothModifierData *)md;
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CustomDataMask dataMask = 0;
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/* ask for vertexgroups if we need them */
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if (smd->defgrp_name[0]) dataMask |= CD_MASK_MDEFORMVERT;
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return dataMask;
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}
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static void smoothModifier_do(
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SmoothModifierData *smd, Object *ob, DerivedMesh *dm,
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float (*vertexCos)[3], int numVerts)
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{
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MDeformVert *dvert = NULL;
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MEdge *medges = NULL;
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int i, j, numDMEdges, defgrp_index;
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unsigned char *uctmp;
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float *ftmp, fac, facm;
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ftmp = (float *)MEM_calloc_arrayN(numVerts, 3 * sizeof(float),
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"smoothmodifier_f");
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if (!ftmp) return;
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uctmp = (unsigned char *)MEM_calloc_arrayN(numVerts, sizeof(unsigned char),
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"smoothmodifier_uc");
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if (!uctmp) {
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if (ftmp) MEM_freeN(ftmp);
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return;
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}
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fac = smd->fac;
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facm = 1 - fac;
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if (dm->getNumVerts(dm) == numVerts) {
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medges = dm->getEdgeArray(dm);
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numDMEdges = dm->getNumEdges(dm);
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}
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else {
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medges = NULL;
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numDMEdges = 0;
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}
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modifier_get_vgroup(ob, dm, smd->defgrp_name, &dvert, &defgrp_index);
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/* NOTICE: this can be optimized a little bit by moving the
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* if (dvert) out of the loop, if needed */
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for (j = 0; j < smd->repeat; j++) {
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for (i = 0; i < numDMEdges; i++) {
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float fvec[3];
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float *v1, *v2;
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unsigned int idx1, idx2;
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idx1 = medges[i].v1;
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idx2 = medges[i].v2;
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v1 = vertexCos[idx1];
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v2 = vertexCos[idx2];
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mid_v3_v3v3(fvec, v1, v2);
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v1 = &ftmp[idx1 * 3];
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v2 = &ftmp[idx2 * 3];
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if (uctmp[idx1] < 255) {
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uctmp[idx1]++;
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add_v3_v3(v1, fvec);
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}
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if (uctmp[idx2] < 255) {
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uctmp[idx2]++;
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add_v3_v3(v2, fvec);
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}
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}
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if (dvert) {
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MDeformVert *dv = dvert;
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for (i = 0; i < numVerts; i++, dv++) {
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float f, fm, facw, *fp, *v;
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short flag = smd->flag;
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v = vertexCos[i];
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fp = &ftmp[i * 3];
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f = defvert_find_weight(dv, defgrp_index);
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if (f <= 0.0f) continue;
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f *= fac;
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fm = 1.0f - f;
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/* fp is the sum of uctmp[i] verts, so must be averaged */
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facw = 0.0f;
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if (uctmp[i])
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facw = f / (float)uctmp[i];
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if (flag & MOD_SMOOTH_X)
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v[0] = fm * v[0] + facw * fp[0];
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if (flag & MOD_SMOOTH_Y)
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v[1] = fm * v[1] + facw * fp[1];
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if (flag & MOD_SMOOTH_Z)
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v[2] = fm * v[2] + facw * fp[2];
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}
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}
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else { /* no vertex group */
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for (i = 0; i < numVerts; i++) {
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float facw, *fp, *v;
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short flag = smd->flag;
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v = vertexCos[i];
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fp = &ftmp[i * 3];
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/* fp is the sum of uctmp[i] verts, so must be averaged */
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facw = 0.0f;
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if (uctmp[i])
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facw = fac / (float)uctmp[i];
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if (flag & MOD_SMOOTH_X)
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v[0] = facm * v[0] + facw * fp[0];
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if (flag & MOD_SMOOTH_Y)
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v[1] = facm * v[1] + facw * fp[1];
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if (flag & MOD_SMOOTH_Z)
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v[2] = facm * v[2] + facw * fp[2];
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}
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}
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memset(ftmp, 0, 3 * sizeof(float) * numVerts);
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memset(uctmp, 0, sizeof(unsigned char) * numVerts);
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}
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MEM_freeN(ftmp);
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MEM_freeN(uctmp);
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}
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static void deformVerts(ModifierData *md, const ModifierEvalContext *ctx, DerivedMesh *derivedData,
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float (*vertexCos)[3], int numVerts)
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{
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DerivedMesh *dm = get_dm(ctx->object, NULL, derivedData, NULL, false, false);
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smoothModifier_do((SmoothModifierData *)md, ctx->object, dm,
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vertexCos, numVerts);
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if (dm != derivedData)
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dm->release(dm);
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}
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static void deformVertsEM(
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ModifierData *md, const ModifierEvalContext *ctx, struct BMEditMesh *editData,
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DerivedMesh *derivedData, float (*vertexCos)[3], int numVerts)
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{
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DerivedMesh *dm = get_dm(ctx->object, editData, derivedData, NULL, false, false);
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smoothModifier_do((SmoothModifierData *)md, ctx->object, dm,
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vertexCos, numVerts);
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if (dm != derivedData)
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dm->release(dm);
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}
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ModifierTypeInfo modifierType_Smooth = {
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/* name */ "Smooth",
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/* structName */ "SmoothModifierData",
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/* structSize */ sizeof(SmoothModifierData),
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/* type */ eModifierTypeType_OnlyDeform,
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/* flags */ eModifierTypeFlag_AcceptsMesh |
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eModifierTypeFlag_AcceptsCVs |
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eModifierTypeFlag_SupportsEditmode,
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/* copyData */ copyData,
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/* deformVerts_DM */ deformVerts,
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/* deformMatrices_DM */ NULL,
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/* deformVertsEM_DM */ deformVertsEM,
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/* deformMatricesEM_DM*/NULL,
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/* applyModifier_DM */ NULL,
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/* applyModifierEM_DM */NULL,
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/* deformVerts */ NULL,
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/* deformMatrices */ NULL,
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/* deformVertsEM */ NULL,
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/* deformMatricesEM */ NULL,
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/* applyModifier */ NULL,
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/* applyModifierEM */ NULL,
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/* initData */ initData,
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/* requiredDataMask */ requiredDataMask,
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/* freeData */ NULL,
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/* isDisabled */ isDisabled,
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/* updateDepsgraph */ NULL,
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/* dependsOnTime */ NULL,
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/* dependsOnNormals */ NULL,
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/* foreachObjectLink */ NULL,
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/* foreachIDLink */ NULL,
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/* foreachTexLink */ NULL,
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};
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