Sergey Sharybin
329e2d8037
Used a crazyspace approach (like in edit mode), but only modifiers with deformMatricies are allowed atm (currently shapekeys and armature modifiers only). All the rest modifiers had an warning message that they aren't applied because of sculpt mode. Deformation of multires is also unsupported. With all this restictions users will always see the actual "layer" (or maybe mesh state would be more correct word) they are sculpting on. Internal changes: - All modifiers could have deformMatricies callback (the same as deformMatriciesEM but for non-edit mode usage) - Added function to build crazyspace for sculpting (sculpt_get_deform_matrices), but it could be generalized for usage in other painting modes (particle edit mode, i.e) Todo: - Implement crazyspace correction to support all kinds of deformation modifiers - Maybe deformation of multires isn't so difficult? - And maybe we could avoid extra bad-level-stub for ED_sculpt_modifiers_changed without code duplicating?
302 lines
8.0 KiB
C
302 lines
8.0 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 "BLI_utildefines.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 *UNUSED(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->name[0]) dataMask |= CD_MASK_MDEFORMVERT;
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if(hmd->indexar) dataMask |= CD_MASK_ORIGINDEX;
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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 UNUSED(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,
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struct Scene *UNUSED(scene),
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Object *UNUSED(ob),
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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 float hook_falloff(float *co_1, float *co_2, const float falloff_squared, float fac)
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{
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if(falloff_squared) {
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float len_squared = len_squared_v3v3(co_1, co_2);
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if(len_squared > falloff_squared) {
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return 0.0f;
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}
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else if(len_squared > 0.0) {
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return fac * (1.0 - (len_squared / falloff_squared));
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}
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}
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return fac;
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}
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static void deformVerts(ModifierData *md, Object *ob,
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DerivedMesh *dm,
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float (*vertexCos)[3],
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int numVerts,
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int UNUSED(useRenderParams),
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int UNUSED(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, *index_pt;
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const float falloff_squared= hmd->falloff * hmd->falloff; /* for faster comparisons */
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int max_dvert= 0;
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MDeformVert *dvert= NULL;
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int defgrp_index = -1;
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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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if((defgrp_index= defgroup_name_index(ob, hmd->name)) != -1) {
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Mesh *me = ob->data;
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if(dm) {
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dvert= dm->getVertDataArray(dm, CD_MDEFORMVERT);
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if(dvert) {
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max_dvert = numVerts;
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}
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}
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else if(me->dvert) {
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dvert= me->dvert;
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if(dvert) {
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max_dvert = me->totvert;
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}
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}
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}
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/* Regarding index range checking below.
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*
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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(hmd->force == 0.0f) {
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/* do nothing, avoid annoying checks in the loop */
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}
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else if(hmd->indexar) { /* vertex indices? */
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const float fac_orig= hmd->force;
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float fac;
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const int *origindex_ar;
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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 && (origindex_ar= dm->getVertDataArray(dm, CD_ORIGINDEX))) {
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for(i= 0, index_pt= hmd->indexar; i < hmd->totindex; i++, index_pt++) {
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if(*index_pt < numVerts) {
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int j;
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for(j = 0; j < numVerts; j++) {
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if(origindex_ar[j] == *index_pt) {
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float *co = vertexCos[j];
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if((fac= hook_falloff(hmd->cent, co, falloff_squared, fac_orig))) {
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if(dvert)
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fac *= defvert_find_weight(dvert+j, defgrp_index);
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if(fac) {
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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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}
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}
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else { /* missing dm or ORIGINDEX */
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for(i= 0, index_pt= hmd->indexar; i < hmd->totindex; i++, index_pt++) {
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if(*index_pt < numVerts) {
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float *co = vertexCos[*index_pt];
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if((fac= hook_falloff(hmd->cent, co, falloff_squared, fac_orig))) {
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if(dvert)
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fac *= defvert_find_weight(dvert+(*index_pt), defgrp_index);
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if(fac) {
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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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}
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else if(dvert) { /* vertex group hook */
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int i;
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const float fac_orig= hmd->force;
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for(i = 0; i < max_dvert; i++, dvert++) {
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float fac;
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float *co = vertexCos[i];
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if((fac= hook_falloff(hmd->cent, co, falloff_squared, fac_orig))) {
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fac *= defvert_find_weight(dvert, defgrp_index);
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if(fac) {
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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, dm, 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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/* deformMatrices */ 0,
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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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