Campbell Barton
81b6d308a7
When there are 2+ consecutive deform modifiers, the second modifier was getting incorrect normals, this only showed up for the displace modifier since its the only deform modifier that uses vertex normals. It would have been easy to fix this by always calculating normals on deform modifiers, but slow. To fix this I added a function to check if a deform modifier needs normals, so the normal calculation function only runs if there are 2 modifiers in a row and the second uses normals.
281 lines
7.5 KiB
C
281 lines
7.5 KiB
C
/*
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* $Id$
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*
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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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#include "DNA_mesh_types.h"
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#include "DNA_meshdata_types.h"
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#include "DNA_object_types.h"
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#include "BLI_math.h"
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#include "BKE_action.h"
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#include "BKE_cdderivedmesh.h"
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#include "BKE_modifier.h"
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#include "BKE_deform.h"
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#include "depsgraph_private.h"
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#include "MEM_guardedalloc.h"
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static void initData(ModifierData *md)
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{
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HookModifierData *hmd = (HookModifierData*) md;
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hmd->force= 1.0;
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}
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static void copyData(ModifierData *md, ModifierData *target)
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{
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HookModifierData *hmd = (HookModifierData*) md;
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HookModifierData *thmd = (HookModifierData*) target;
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copy_v3_v3(thmd->cent, hmd->cent);
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thmd->falloff = hmd->falloff;
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thmd->force = hmd->force;
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thmd->object = hmd->object;
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thmd->totindex = hmd->totindex;
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thmd->indexar = MEM_dupallocN(hmd->indexar);
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memcpy(thmd->parentinv, hmd->parentinv, sizeof(hmd->parentinv));
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strncpy(thmd->name, hmd->name, 32);
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strncpy(thmd->subtarget, hmd->subtarget, 32);
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}
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static CustomDataMask requiredDataMask(Object *ob, ModifierData *md)
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{
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HookModifierData *hmd = (HookModifierData *)md;
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CustomDataMask dataMask = 0;
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/* ask for vertexgroups if we need them */
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if(!hmd->indexar && hmd->name[0]) dataMask |= (1 << CD_MDEFORMVERT);
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return dataMask;
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}
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static void freeData(ModifierData *md)
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{
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HookModifierData *hmd = (HookModifierData*) md;
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if (hmd->indexar) MEM_freeN(hmd->indexar);
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}
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static int isDisabled(ModifierData *md, int useRenderParams)
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{
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HookModifierData *hmd = (HookModifierData*) md;
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return !hmd->object;
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}
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static void foreachObjectLink(
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ModifierData *md, Object *ob,
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void (*walk)(void *userData, Object *ob, Object **obpoin),
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void *userData)
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{
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HookModifierData *hmd = (HookModifierData*) md;
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walk(userData, ob, &hmd->object);
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}
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static void updateDepgraph(ModifierData *md, DagForest *forest, struct Scene *scene,
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Object *ob, DagNode *obNode)
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{
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HookModifierData *hmd = (HookModifierData*) md;
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if (hmd->object) {
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DagNode *curNode = dag_get_node(forest, hmd->object);
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if (hmd->subtarget[0])
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dag_add_relation(forest, curNode, obNode, DAG_RL_OB_DATA|DAG_RL_DATA_DATA, "Hook Modifier");
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else
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dag_add_relation(forest, curNode, obNode, DAG_RL_OB_DATA, "Hook Modifier");
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}
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}
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static void deformVerts(
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ModifierData *md, Object *ob, DerivedMesh *derivedData,
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float (*vertexCos)[3], int numVerts, int useRenderParams, int isFinalCalc)
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{
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HookModifierData *hmd = (HookModifierData*) md;
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bPoseChannel *pchan= get_pose_channel(hmd->object->pose, hmd->subtarget);
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float vec[3], mat[4][4], dmat[4][4];
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int i;
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DerivedMesh *dm = derivedData;
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/* get world-space matrix of target, corrected for the space the verts are in */
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if (hmd->subtarget[0] && pchan) {
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/* bone target if there's a matching pose-channel */
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mul_m4_m4m4(dmat, pchan->pose_mat, hmd->object->obmat);
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}
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else {
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/* just object target */
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copy_m4_m4(dmat, hmd->object->obmat);
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}
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invert_m4_m4(ob->imat, ob->obmat);
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mul_serie_m4(mat, ob->imat, dmat, hmd->parentinv,
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NULL, NULL, NULL, NULL, NULL);
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/* vertex indices? */
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if(hmd->indexar) {
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for(i = 0; i < hmd->totindex; i++) {
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int index = hmd->indexar[i];
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/* This should always be true and I don't generally like
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* "paranoid" style code like this, but old files can have
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* indices that are out of range because old blender did
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* not correct them on exit editmode. - zr
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*/
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if(index < numVerts) {
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float *co = vertexCos[index];
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float fac = hmd->force;
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/* if DerivedMesh is present and has original index data,
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* use it
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*/
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if(dm && dm->getVertDataArray(dm, CD_ORIGINDEX)) {
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int j;
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int orig_index;
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for(j = 0; j < numVerts; ++j) {
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fac = hmd->force;
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orig_index = *(int *)dm->getVertData(dm, j,
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CD_ORIGINDEX);
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if(orig_index == index) {
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co = vertexCos[j];
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if(hmd->falloff != 0.0) {
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float len = len_v3v3(co, hmd->cent);
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if(len > hmd->falloff) fac = 0.0;
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else if(len > 0.0)
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fac *= sqrt(1.0 - len / hmd->falloff);
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}
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if(fac != 0.0) {
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mul_v3_m4v3(vec, mat, co);
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interp_v3_v3v3(co, co, vec, fac);
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}
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}
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}
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} else {
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if(hmd->falloff != 0.0) {
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float len = len_v3v3(co, hmd->cent);
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if(len > hmd->falloff) fac = 0.0;
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else if(len > 0.0)
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fac *= sqrt(1.0 - len / hmd->falloff);
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}
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if(fac != 0.0) {
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mul_v3_m4v3(vec, mat, co);
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interp_v3_v3v3(co, co, vec, fac);
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}
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}
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}
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}
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}
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else if(hmd->name[0]) { /* vertex group hook */
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Mesh *me = ob->data;
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int use_dverts = 0;
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int maxVerts = 0;
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int defgrp_index = defgroup_name_index(ob, hmd->name);
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if(dm) {
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if(dm->getVertData(dm, 0, CD_MDEFORMVERT)) {
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maxVerts = dm->getNumVerts(dm);
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use_dverts = 1;
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}
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}
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else if(me->dvert) {
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maxVerts = me->totvert;
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use_dverts = 1;
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}
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if(defgrp_index >= 0 && use_dverts) {
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MDeformVert *dvert = me->dvert;
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int i;
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float fac;
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for(i = 0; i < maxVerts; i++, dvert++) {
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if(dm) dvert = dm->getVertData(dm, i, CD_MDEFORMVERT);
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fac= defvert_find_weight(dvert, defgrp_index);
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if(fac > 0.0f) {
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float *co = vertexCos[i];
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if(hmd->falloff != 0.0) {
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float len = len_v3v3(co, hmd->cent);
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if(len > hmd->falloff) fac = 0.0;
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else if(len > 0.0)
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fac *= sqrt(1.0 - len / hmd->falloff);
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}
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mul_v3_m4v3(vec, mat, co);
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interp_v3_v3v3(co, co, vec, fac);
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}
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}
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}
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}
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}
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static void deformVertsEM(
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ModifierData *md, Object *ob, struct EditMesh *editData,
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DerivedMesh *derivedData, float (*vertexCos)[3], int numVerts)
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{
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DerivedMesh *dm = derivedData;
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if(!derivedData) dm = CDDM_from_editmesh(editData, ob->data);
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deformVerts(md, ob, derivedData, vertexCos, numVerts, 0, 0);
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if(!derivedData) dm->release(dm);
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}
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ModifierTypeInfo modifierType_Hook = {
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/* name */ "Hook",
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/* structName */ "HookModifierData",
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/* structSize */ sizeof(HookModifierData),
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/* type */ eModifierTypeType_OnlyDeform,
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/* flags */ eModifierTypeFlag_AcceptsCVs
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| eModifierTypeFlag_SupportsEditmode,
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/* copyData */ copyData,
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/* deformVerts */ deformVerts,
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/* deformVertsEM */ deformVertsEM,
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/* deformMatricesEM */ 0,
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/* applyModifier */ 0,
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/* applyModifierEM */ 0,
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/* initData */ initData,
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/* requiredDataMask */ requiredDataMask,
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/* freeData */ freeData,
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/* isDisabled */ isDisabled,
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/* updateDepgraph */ updateDepgraph,
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/* dependsOnTime */ 0,
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/* dependsOnNormals */ 0,
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/* foreachObjectLink */ foreachObjectLink,
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/* foreachIDLink */ 0,
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};
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