Campbell Barton
1b462e5a51
2.8x branch added bContext arg in many places, pass eval-context instead since its not simple to reason about what what nested functions do when they can access and change almost anything. Also use const to prevent unexpected modifications. This fixes crash loading files with shadows, since off-screen buffers use a NULL context for rendering.
271 lines
6.9 KiB
C
271 lines
6.9 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_callocN(3 * sizeof(float) * numVerts,
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"smoothmodifier_f");
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if (!ftmp) return;
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uctmp = (unsigned char *)MEM_callocN(sizeof(unsigned char) * numVerts,
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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 struct EvaluationContext *UNUSED(eval_ctx), Object *ob, DerivedMesh *derivedData,
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float (*vertexCos)[3], int numVerts, ModifierApplyFlag UNUSED(flag))
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{
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DerivedMesh *dm = get_dm(ob, NULL, derivedData, NULL, false, false);
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smoothModifier_do((SmoothModifierData *)md, ob, 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 struct EvaluationContext *UNUSED(eval_ctx), Object *ob, 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(ob, editData, derivedData, NULL, false, false);
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smoothModifier_do((SmoothModifierData *)md, ob, 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 */ deformVerts,
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/* deformMatrices */ NULL,
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/* deformVertsEM */ deformVertsEM,
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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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