diff options
Diffstat (limited to 'source/blender/modifiers/intern/MOD_warp.c')
| -rw-r--r-- | source/blender/modifiers/intern/MOD_warp.c | 365 |
1 files changed, 365 insertions, 0 deletions
diff --git a/source/blender/modifiers/intern/MOD_warp.c b/source/blender/modifiers/intern/MOD_warp.c new file mode 100644 index 00000000000..acdbf493267 --- /dev/null +++ b/source/blender/modifiers/intern/MOD_warp.c @@ -0,0 +1,365 @@ +/* +* $Id$ +* +* ***** 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. +* +* Contributor(s): Campbell Barton +* +* ***** END GPL LICENSE BLOCK ***** +* +*/ + +#include <string.h> + +#include "MEM_guardedalloc.h" + +#include "BLI_math.h" +#include "BLI_utildefines.h" + +#include "BKE_cdderivedmesh.h" +#include "BKE_modifier.h" +#include "BKE_deform.h" +#include "BKE_texture.h" +#include "BKE_colortools.h" + +#include "DNA_object_types.h" +#include "DNA_meshdata_types.h" + +#include "depsgraph_private.h" + +#include "RE_shader_ext.h" + +#include "MOD_util.h" + + +static void initData(ModifierData *md) +{ + WarpModifierData *wmd = (WarpModifierData*) md; + + wmd->curfalloff = curvemapping_add(1, 0.0f, 0.0f, 1.0f, 1.0f); + wmd->texture = NULL; + wmd->strength = 1.0f; + wmd->falloff_radius = 1.0f; + wmd->falloff_type = eWarp_Falloff_Smooth; + wmd->flag = 0; +} + +static void copyData(ModifierData *md, ModifierData *target) +{ + WarpModifierData *wmd = (WarpModifierData*) md; + WarpModifierData *twmd = (WarpModifierData*) target; + + twmd->object_from = wmd->object_from; + twmd->object_to = wmd->object_to; + + twmd->strength = wmd->strength; + twmd->falloff_radius = wmd->falloff_radius; + twmd->falloff_type = wmd->falloff_type; + strncpy(twmd->defgrp_name, wmd->defgrp_name, sizeof(twmd->defgrp_name)); + twmd->curfalloff = curvemapping_copy(wmd->curfalloff); + + /* map info */ + twmd->texture = wmd->texture; + twmd->map_object = wmd->map_object; + strncpy(twmd->uvlayer_name, wmd->uvlayer_name, sizeof(twmd->uvlayer_name)); + twmd->texmapping= wmd->texmapping; +} + +static CustomDataMask requiredDataMask(Object *UNUSED(ob), ModifierData *md) +{ + WarpModifierData *wmd = (WarpModifierData *)md; + CustomDataMask dataMask = 0; + + /* ask for vertexgroups if we need them */ + if(wmd->defgrp_name[0]) dataMask |= (1 << CD_MDEFORMVERT); + dataMask |= (1 << CD_MDEFORMVERT); + + /* ask for UV coordinates if we need them */ + if(wmd->texmapping == MOD_DISP_MAP_UV) dataMask |= (1 << CD_MTFACE); + + return dataMask; +} + +static int dependsOnTime(ModifierData *md) +{ + WarpModifierData *wmd = (WarpModifierData *)md; + + if(wmd->texture) { + return BKE_texture_dependsOnTime(wmd->texture); + } + else { + return 0; + } +} + +static void freeData(ModifierData *md) +{ + WarpModifierData *wmd = (WarpModifierData *) md; + curvemapping_free(wmd->curfalloff); +} + + +static int isDisabled(ModifierData *md, int UNUSED(userRenderParams)) +{ + WarpModifierData *wmd = (WarpModifierData*) md; + + return !(wmd->object_from && wmd->object_to); +} + +static void foreachObjectLink(ModifierData *md, Object *ob, ObjectWalkFunc walk, void *userData) +{ + WarpModifierData *wmd = (WarpModifierData*) md; + + walk(userData, ob, &wmd->object_from); + walk(userData, ob, &wmd->object_to); + walk(userData, ob, &wmd->map_object); +} + +static void foreachIDLink(ModifierData *md, Object *ob, IDWalkFunc walk, void *userData) +{ + WarpModifierData *wmd = (WarpModifierData*) md; + + walk(userData, ob, (ID **)&wmd->texture); + + walk(userData, ob, (ID **)&wmd->object_from); + walk(userData, ob, (ID **)&wmd->object_to); + walk(userData, ob, (ID **)&wmd->map_object); +} + +static void updateDepgraph(ModifierData *md, DagForest *forest, struct Scene *UNUSED(scene), + Object *UNUSED(ob), DagNode *obNode) +{ + WarpModifierData *wmd = (WarpModifierData*) md; + + if(wmd->object_from && wmd->object_to) { + DagNode *fromNode = dag_get_node(forest, wmd->object_from); + DagNode *toNode = dag_get_node(forest, wmd->object_to); + + dag_add_relation(forest, fromNode, obNode, DAG_RL_DATA_DATA | DAG_RL_OB_DATA, "Warp Modifier1"); + dag_add_relation(forest, toNode, obNode, DAG_RL_DATA_DATA | DAG_RL_OB_DATA, "Warp Modifier2"); + } + + if((wmd->texmapping == MOD_DISP_MAP_OBJECT) && wmd->map_object) { + DagNode *curNode = dag_get_node(forest, wmd->map_object); + dag_add_relation(forest, curNode, obNode, DAG_RL_DATA_DATA | DAG_RL_OB_DATA, "Warp Modifier3"); + } +} + +static void warpModifier_do(WarpModifierData *wmd, Object *ob, + DerivedMesh *dm, float (*vertexCos)[3], int numVerts) +{ + float obinv[4][4]; + float mat_from[4][4]; + float mat_from_inv[4][4]; + float mat_to[4][4]; + float mat_unit[4][4]; + float mat_final[4][4]; + + float tmat[4][4]; + + float strength = wmd->strength; + float fac = 1.0f, weight; + int i; + int defgrp_index = defgroup_name_index(ob, wmd->defgrp_name); + MDeformVert *dv= NULL; + + float (*tex_co)[3]= NULL; + + if(!(wmd->object_from && wmd->object_to)) + return; + + if(wmd->curfalloff==NULL) /* should never happen, but bad lib linking could cause it */ + wmd->curfalloff = curvemapping_add(1, 0.0f, 0.0f, 1.0f, 1.0f); + + invert_m4_m4(obinv, ob->obmat); + + mul_m4_m4m4(mat_from, wmd->object_from->obmat, obinv); + mul_m4_m4m4(mat_to, wmd->object_to->obmat, obinv); + + invert_m4_m4(tmat, mat_from); // swap? + mul_m4_m4m4(mat_final, mat_to, tmat); + + invert_m4_m4(mat_from_inv, mat_from); + + unit_m4(mat_unit); + + if(strength < 0.0f) { + float loc[3]; + strength = -strength; + + /* inverted location is not useful, just use the negative */ + copy_v3_v3(loc, mat_final[3]); + invert_m4(mat_final); + negate_v3_v3(mat_final[3], loc); + + } + weight= strength; + + if(wmd->texture) { + tex_co = MEM_mallocN(sizeof(*tex_co) * numVerts, "warpModifier_do tex_co"); + get_texture_coords((MappingInfoModifierData *)wmd, ob, dm, vertexCos, tex_co, numVerts); + } + + for(i = 0; i < numVerts; i++) { + float *co = vertexCos[i]; + + if(wmd->falloff_type==eWarp_Falloff_None || + ((fac=len_v3v3(co, mat_from[3])) < wmd->falloff_radius && (fac=(wmd->falloff_radius-fac)/wmd->falloff_radius)) ) { + + /* skip if no vert group found */ + if(defgrp_index >= 0) { + dv = dm->getVertData(dm, i, CD_MDEFORMVERT); + + if(dv) { + weight = defvert_find_weight(dv, defgrp_index) * wmd->strength; + if(weight <= 0.0f) + continue; + } + } + + + /* closely match PROP_SMOOTH and similar */ + switch(wmd->falloff_type) { + case eWarp_Falloff_None: + fac = 1.0f; + break; + case eWarp_Falloff_Curve: + fac = curvemapping_evaluateF(wmd->curfalloff, 0, fac); + break; + case eWarp_Falloff_Sharp: + fac = fac*fac; + break; + case eWarp_Falloff_Smooth: + fac = 3.0f*fac*fac - 2.0f*fac*fac*fac; + break; + case eWarp_Falloff_Root: + fac = (float)sqrt(fac); + break; + case eWarp_Falloff_Linear: + /* pass */ + break; + case eWarp_Falloff_Const: + fac = 1.0f; + break; + case eWarp_Falloff_Sphere: + fac = (float)sqrt(2*fac - fac * fac); + break; + } + + fac *= weight; + + if(tex_co) { + TexResult texres; + texres.nor = NULL; + get_texture_value(wmd->texture, tex_co[i], &texres); + fac *= texres.tin; + } + + /* into the 'from' objects space */ + mul_m4_v3(mat_from_inv, co); + + if(fac >= 1.0f) { + mul_m4_v3(mat_final, co); + } + else if(fac > 0.0f) { + if(wmd->flag & MOD_WARP_VOLUME_PRESERVE) { + /* interpolate the matrix for nicer locations */ + blend_m4_m4m4(tmat, mat_unit, mat_final, fac); + mul_m4_v3(tmat, co); + } + else { + float tvec[3]; + mul_v3_m4v3(tvec, mat_final, co); + interp_v3_v3v3(co, co, tvec, fac); + } + } + + /* out of the 'from' objects space */ + mul_m4_v3(mat_from, co); + } + } + + if(tex_co) + MEM_freeN(tex_co); + +} + +static int warp_needs_dm(WarpModifierData *wmd) +{ + return wmd->texture || wmd->defgrp_name[0]; +} + +static void deformVerts(ModifierData *md, Object *ob, DerivedMesh *derivedData, + float (*vertexCos)[3], int numVerts, int UNUSED(useRenderParams), int UNUSED(isFinalCalc)) +{ + DerivedMesh *dm= NULL; + int use_dm= warp_needs_dm((WarpModifierData *)md); + + if(use_dm) { + dm= get_cddm(ob, NULL, derivedData, vertexCos); + } + + warpModifier_do((WarpModifierData *)md, ob, dm, vertexCos, numVerts); + + if(use_dm) { + 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 = derivedData; + int use_dm= warp_needs_dm((WarpModifierData *)md); + + if(use_dm) { + if(!derivedData) + dm = CDDM_from_BMEditMesh(editData, ob->data, 0); + } + + deformVerts(md, ob, dm, vertexCos, numVerts, 0, 0); + + if(use_dm) { + if(!derivedData) dm->release(dm); + } +} + + +ModifierTypeInfo modifierType_Warp = { + /* name */ "Warp", + /* structName */ "WarpModifierData", + /* structSize */ sizeof(WarpModifierData), + /* type */ eModifierTypeType_OnlyDeform, + /* flags */ eModifierTypeFlag_AcceptsCVs + | eModifierTypeFlag_SupportsEditmode, + /* copyData */ copyData, + /* deformVerts */ deformVerts, + /* deformMatrices */ NULL, + /* deformVertsEM */ deformVertsEM, + /* deformMatricesEM */ NULL, + /* applyModifier */ 0, + /* applyModifierEM */ 0, + /* initData */ initData, + /* requiredDataMask */ requiredDataMask, + /* freeData */ freeData, + /* isDisabled */ isDisabled, + /* updateDepgraph */ updateDepgraph, + /* dependsOnTime */ dependsOnTime, + /* dependsOnNormals */ NULL, + /* foreachObjectLink */ foreachObjectLink, + /* foreachIDLink */ foreachIDLink, +}; |