diff options
Diffstat (limited to 'source/blender/modifiers/intern/MOD_explode.c')
| -rw-r--r-- | source/blender/modifiers/intern/MOD_explode.c | 943 |
1 files changed, 942 insertions, 1 deletions
diff --git a/source/blender/modifiers/intern/MOD_explode.c b/source/blender/modifiers/intern/MOD_explode.c index 97f4423b798..38ffdaa709b 100644 --- a/source/blender/modifiers/intern/MOD_explode.c +++ b/source/blender/modifiers/intern/MOD_explode.c @@ -48,6 +48,7 @@ #include "BKE_lattice.h" #include "BKE_mesh.h" #include "BKE_modifier.h" +#include "BKE_particle.h" #include "BKE_scene.h" @@ -93,10 +94,950 @@ static CustomDataMask requiredDataMask(Object *UNUSED(ob), ModifierData *md) return dataMask; } -static DerivedMesh *applyModifier(ModifierData *UNUSED(md), Object *UNUSED(ob), +static void createFacepa(ExplodeModifierData *emd, + ParticleSystemModifierData *psmd, + DerivedMesh *dm) +{ + ParticleSystem *psys = psmd->psys; + MFace *fa = NULL, *mface = NULL; + MVert *mvert = NULL; + ParticleData *pa; + KDTree *tree; + RNG *rng; + float center[3], co[3]; + int *facepa = NULL, *vertpa = NULL, totvert = 0, totface = 0, totpart = 0; + int i, p, v1, v2, v3, v4 = 0; + + mvert = dm->getVertArray(dm); + mface = dm->getTessFaceArray(dm); + totface = dm->getNumTessFaces(dm); + totvert = dm->getNumVerts(dm); + totpart = psmd->psys->totpart; + + rng = BLI_rng_new_srandom(psys->seed); + + if (emd->facepa) + MEM_freeN(emd->facepa); + + facepa = emd->facepa = MEM_callocN(sizeof(int) * totface, "explode_facepa"); + + vertpa = MEM_callocN(sizeof(int) * totvert, "explode_vertpa"); + + /* initialize all faces & verts to no particle */ + for (i = 0; i < totface; i++) + facepa[i] = totpart; + + for (i = 0; i < totvert; i++) + vertpa[i] = totpart; + + /* set protected verts */ + if (emd->vgroup) { + MDeformVert *dvert = dm->getVertDataArray(dm, CD_MDEFORMVERT); + if (dvert) { + const int defgrp_index = emd->vgroup - 1; + for (i = 0; i < totvert; i++, dvert++) { + float val = BLI_rng_get_float(rng); + val = (1.0f - emd->protect) * val + emd->protect * 0.5f; + if (val < defvert_find_weight(dvert, defgrp_index)) + vertpa[i] = -1; + } + } + } + + /* make tree of emitter locations */ + tree = BLI_kdtree_new(totpart); + for (p = 0, pa = psys->particles; p < totpart; p++, pa++) { + psys_particle_on_emitter(psmd, psys->part->from, pa->num, pa->num_dmcache, pa->fuv, pa->foffset, co, NULL, NULL, NULL, NULL, NULL); + BLI_kdtree_insert(tree, p, co); + } + BLI_kdtree_balance(tree); + + /* set face-particle-indexes to nearest particle to face center */ + for (i = 0, fa = mface; i < totface; i++, fa++) { + add_v3_v3v3(center, mvert[fa->v1].co, mvert[fa->v2].co); + add_v3_v3(center, mvert[fa->v3].co); + if (fa->v4) { + add_v3_v3(center, mvert[fa->v4].co); + mul_v3_fl(center, 0.25); + } + else + mul_v3_fl(center, 1.0f / 3.0f); + + p = BLI_kdtree_find_nearest(tree, center, NULL); + + v1 = vertpa[fa->v1]; + v2 = vertpa[fa->v2]; + v3 = vertpa[fa->v3]; + if (fa->v4) + v4 = vertpa[fa->v4]; + + if (v1 >= 0 && v2 >= 0 && v3 >= 0 && (fa->v4 == 0 || v4 >= 0)) + facepa[i] = p; + + if (v1 >= 0) vertpa[fa->v1] = p; + if (v2 >= 0) vertpa[fa->v2] = p; + if (v3 >= 0) vertpa[fa->v3] = p; + if (fa->v4 && v4 >= 0) vertpa[fa->v4] = p; + } + + if (vertpa) MEM_freeN(vertpa); + BLI_kdtree_free(tree); + + BLI_rng_free(rng); +} + +static int edgecut_get(EdgeHash *edgehash, unsigned int v1, unsigned int v2) +{ + return GET_INT_FROM_POINTER(BLI_edgehash_lookup(edgehash, v1, v2)); +} + + +static const short add_faces[24] = { + 0, + 0, 0, 2, 0, 1, 2, 2, 0, 2, 1, + 2, 2, 2, 2, 3, 0, 0, 0, 1, 0, + 1, 1, 2 +}; + +static MFace *get_dface(DerivedMesh *dm, DerivedMesh *split, int cur, int i, MFace *mf) +{ + MFace *df = CDDM_get_tessface(split, cur); + DM_copy_tessface_data(dm, split, i, cur, 1); + *df = *mf; + return df; +} + +#define SET_VERTS(a, b, c, d) \ + { \ + v[0] = mf->v##a; uv[0] = a - 1; \ + v[1] = mf->v##b; uv[1] = b - 1; \ + v[2] = mf->v##c; uv[2] = c - 1; \ + v[3] = mf->v##d; uv[3] = d - 1; \ + } (void)0 + +#define GET_ES(v1, v2) edgecut_get(eh, v1, v2) +#define INT_UV(uvf, c0, c1) mid_v2_v2v2(uvf, mf->uv[c0], mf->uv[c1]) + +static void remap_faces_3_6_9_12(DerivedMesh *dm, DerivedMesh *split, MFace *mf, int *facepa, int *vertpa, int i, EdgeHash *eh, int cur, int v1, int v2, int v3, int v4) +{ + MFace *df1 = get_dface(dm, split, cur, i, mf); + MFace *df2 = get_dface(dm, split, cur + 1, i, mf); + MFace *df3 = get_dface(dm, split, cur + 2, i, mf); + + facepa[cur] = vertpa[v1]; + df1->v1 = v1; + df1->v2 = GET_ES(v1, v2); + df1->v3 = GET_ES(v2, v3); + df1->v4 = v3; + df1->flag |= ME_FACE_SEL; + + facepa[cur + 1] = vertpa[v2]; + df2->v1 = GET_ES(v1, v2); + df2->v2 = v2; + df2->v3 = GET_ES(v2, v3); + df2->v4 = 0; + df2->flag &= ~ME_FACE_SEL; + + facepa[cur + 2] = vertpa[v1]; + df3->v1 = v1; + df3->v2 = v3; + df3->v3 = v4; + df3->v4 = 0; + df3->flag &= ~ME_FACE_SEL; +} + +static void remap_uvs_3_6_9_12(DerivedMesh *dm, DerivedMesh *split, int numlayer, int i, int cur, int c0, int c1, int c2, int c3) +{ + MTFace *mf, *df1, *df2, *df3; + int l; + + for (l = 0; l < numlayer; l++) { + mf = CustomData_get_layer_n(&split->faceData, CD_MTFACE, l); + df1 = mf + cur; + df2 = df1 + 1; + df3 = df1 + 2; + mf = CustomData_get_layer_n(&dm->faceData, CD_MTFACE, l); + mf += i; + + copy_v2_v2(df1->uv[0], mf->uv[c0]); + INT_UV(df1->uv[1], c0, c1); + INT_UV(df1->uv[2], c1, c2); + copy_v2_v2(df1->uv[3], mf->uv[c2]); + + INT_UV(df2->uv[0], c0, c1); + copy_v2_v2(df2->uv[1], mf->uv[c1]); + INT_UV(df2->uv[2], c1, c2); + + copy_v2_v2(df3->uv[0], mf->uv[c0]); + copy_v2_v2(df3->uv[1], mf->uv[c2]); + copy_v2_v2(df3->uv[2], mf->uv[c3]); + } +} + +static void remap_faces_5_10(DerivedMesh *dm, DerivedMesh *split, MFace *mf, int *facepa, int *vertpa, int i, EdgeHash *eh, int cur, int v1, int v2, int v3, int v4) +{ + MFace *df1 = get_dface(dm, split, cur, i, mf); + MFace *df2 = get_dface(dm, split, cur + 1, i, mf); + + facepa[cur] = vertpa[v1]; + df1->v1 = v1; + df1->v2 = v2; + df1->v3 = GET_ES(v2, v3); + df1->v4 = GET_ES(v1, v4); + df1->flag |= ME_FACE_SEL; + + facepa[cur + 1] = vertpa[v3]; + df2->v1 = GET_ES(v1, v4); + df2->v2 = GET_ES(v2, v3); + df2->v3 = v3; + df2->v4 = v4; + df2->flag |= ME_FACE_SEL; +} + +static void remap_uvs_5_10(DerivedMesh *dm, DerivedMesh *split, int numlayer, int i, int cur, int c0, int c1, int c2, int c3) +{ + MTFace *mf, *df1, *df2; + int l; + + for (l = 0; l < numlayer; l++) { + mf = CustomData_get_layer_n(&split->faceData, CD_MTFACE, l); + df1 = mf + cur; + df2 = df1 + 1; + mf = CustomData_get_layer_n(&dm->faceData, CD_MTFACE, l); + mf += i; + + copy_v2_v2(df1->uv[0], mf->uv[c0]); + copy_v2_v2(df1->uv[1], mf->uv[c1]); + INT_UV(df1->uv[2], c1, c2); + INT_UV(df1->uv[3], c0, c3); + + INT_UV(df2->uv[0], c0, c3); + INT_UV(df2->uv[1], c1, c2); + copy_v2_v2(df2->uv[2], mf->uv[c2]); + copy_v2_v2(df2->uv[3], mf->uv[c3]); + + } +} + +static void remap_faces_15(DerivedMesh *dm, DerivedMesh *split, MFace *mf, int *facepa, int *vertpa, int i, EdgeHash *eh, int cur, int v1, int v2, int v3, int v4) +{ + MFace *df1 = get_dface(dm, split, cur, i, mf); + MFace *df2 = get_dface(dm, split, cur + 1, i, mf); + MFace *df3 = get_dface(dm, split, cur + 2, i, mf); + MFace *df4 = get_dface(dm, split, cur + 3, i, mf); + + facepa[cur] = vertpa[v1]; + df1->v1 = v1; + df1->v2 = GET_ES(v1, v2); + df1->v3 = GET_ES(v1, v3); + df1->v4 = GET_ES(v1, v4); + df1->flag |= ME_FACE_SEL; + + facepa[cur + 1] = vertpa[v2]; + df2->v1 = GET_ES(v1, v2); + df2->v2 = v2; + df2->v3 = GET_ES(v2, v3); + df2->v4 = GET_ES(v1, v3); + df2->flag |= ME_FACE_SEL; + + facepa[cur + 2] = vertpa[v3]; + df3->v1 = GET_ES(v1, v3); + df3->v2 = GET_ES(v2, v3); + df3->v3 = v3; + df3->v4 = GET_ES(v3, v4); + df3->flag |= ME_FACE_SEL; + + facepa[cur + 3] = vertpa[v4]; + df4->v1 = GET_ES(v1, v4); + df4->v2 = GET_ES(v1, v3); + df4->v3 = GET_ES(v3, v4); + df4->v4 = v4; + df4->flag |= ME_FACE_SEL; +} + +static void remap_uvs_15(DerivedMesh *dm, DerivedMesh *split, int numlayer, int i, int cur, int c0, int c1, int c2, int c3) +{ + MTFace *mf, *df1, *df2, *df3, *df4; + int l; + + for (l = 0; l < numlayer; l++) { + mf = CustomData_get_layer_n(&split->faceData, CD_MTFACE, l); + df1 = mf + cur; + df2 = df1 + 1; + df3 = df1 + 2; + df4 = df1 + 3; + mf = CustomData_get_layer_n(&dm->faceData, CD_MTFACE, l); + mf += i; + + copy_v2_v2(df1->uv[0], mf->uv[c0]); + INT_UV(df1->uv[1], c0, c1); + INT_UV(df1->uv[2], c0, c2); + INT_UV(df1->uv[3], c0, c3); + + INT_UV(df2->uv[0], c0, c1); + copy_v2_v2(df2->uv[1], mf->uv[c1]); + INT_UV(df2->uv[2], c1, c2); + INT_UV(df2->uv[3], c0, c2); + + INT_UV(df3->uv[0], c0, c2); + INT_UV(df3->uv[1], c1, c2); + copy_v2_v2(df3->uv[2], mf->uv[c2]); + INT_UV(df3->uv[3], c2, c3); + + INT_UV(df4->uv[0], c0, c3); + INT_UV(df4->uv[1], c0, c2); + INT_UV(df4->uv[2], c2, c3); + copy_v2_v2(df4->uv[3], mf->uv[c3]); + } +} + +static void remap_faces_7_11_13_14(DerivedMesh *dm, DerivedMesh *split, MFace *mf, int *facepa, int *vertpa, int i, EdgeHash *eh, int cur, int v1, int v2, int v3, int v4) +{ + MFace *df1 = get_dface(dm, split, cur, i, mf); + MFace *df2 = get_dface(dm, split, cur + 1, i, mf); + MFace *df3 = get_dface(dm, split, cur + 2, i, mf); + + facepa[cur] = vertpa[v1]; + df1->v1 = v1; + df1->v2 = GET_ES(v1, v2); + df1->v3 = GET_ES(v2, v3); + df1->v4 = GET_ES(v1, v4); + df1->flag |= ME_FACE_SEL; + + facepa[cur + 1] = vertpa[v2]; + df2->v1 = GET_ES(v1, v2); + df2->v2 = v2; + df2->v3 = GET_ES(v2, v3); + df2->v4 = 0; + df2->flag &= ~ME_FACE_SEL; + + facepa[cur + 2] = vertpa[v4]; + df3->v1 = GET_ES(v1, v4); + df3->v2 = GET_ES(v2, v3); + df3->v3 = v3; + df3->v4 = v4; + df3->flag |= ME_FACE_SEL; +} + +static void remap_uvs_7_11_13_14(DerivedMesh *dm, DerivedMesh *split, int numlayer, int i, int cur, int c0, int c1, int c2, int c3) +{ + MTFace *mf, *df1, *df2, *df3; + int l; + + for (l = 0; l < numlayer; l++) { + mf = CustomData_get_layer_n(&split->faceData, CD_MTFACE, l); + df1 = mf + cur; + df2 = df1 + 1; + df3 = df1 + 2; + mf = CustomData_get_layer_n(&dm->faceData, CD_MTFACE, l); + mf += i; + + copy_v2_v2(df1->uv[0], mf->uv[c0]); + INT_UV(df1->uv[1], c0, c1); + INT_UV(df1->uv[2], c1, c2); + INT_UV(df1->uv[3], c0, c3); + + INT_UV(df2->uv[0], c0, c1); + copy_v2_v2(df2->uv[1], mf->uv[c1]); + INT_UV(df2->uv[2], c1, c2); + + INT_UV(df3->uv[0], c0, c3); + INT_UV(df3->uv[1], c1, c2); + copy_v2_v2(df3->uv[2], mf->uv[c2]); + copy_v2_v2(df3->uv[3], mf->uv[c3]); + } +} + +static void remap_faces_19_21_22(DerivedMesh *dm, DerivedMesh *split, MFace *mf, int *facepa, int *vertpa, int i, EdgeHash *eh, int cur, int v1, int v2, int v3) +{ + MFace *df1 = get_dface(dm, split, cur, i, mf); + MFace *df2 = get_dface(dm, split, cur + 1, i, mf); + + facepa[cur] = vertpa[v1]; + df1->v1 = v1; + df1->v2 = GET_ES(v1, v2); + df1->v3 = GET_ES(v1, v3); + df1->v4 = 0; + df1->flag &= ~ME_FACE_SEL; + + facepa[cur + 1] = vertpa[v2]; + df2->v1 = GET_ES(v1, v2); + df2->v2 = v2; + df2->v3 = v3; + df2->v4 = GET_ES(v1, v3); + df2->flag |= ME_FACE_SEL; +} + +static void remap_uvs_19_21_22(DerivedMesh *dm, DerivedMesh *split, int numlayer, int i, int cur, int c0, int c1, int c2) +{ + MTFace *mf, *df1, *df2; + int l; + + for (l = 0; l < numlayer; l++) { + mf = CustomData_get_layer_n(&split->faceData, CD_MTFACE, l); + df1 = mf + cur; + df2 = df1 + 1; + mf = CustomData_get_layer_n(&dm->faceData, CD_MTFACE, l); + mf += i; + + copy_v2_v2(df1->uv[0], mf->uv[c0]); + INT_UV(df1->uv[1], c0, c1); + INT_UV(df1->uv[2], c0, c2); + + INT_UV(df2->uv[0], c0, c1); + copy_v2_v2(df2->uv[1], mf->uv[c1]); + copy_v2_v2(df2->uv[2], mf->uv[c2]); + INT_UV(df2->uv[3], c0, c2); + } +} + +static void remap_faces_23(DerivedMesh *dm, DerivedMesh *split, MFace *mf, int *facepa, int *vertpa, int i, EdgeHash *eh, int cur, int v1, int v2, int v3) +{ + MFace *df1 = get_dface(dm, split, cur, i, mf); + MFace *df2 = get_dface(dm, split, cur + 1, i, mf); + MFace *df3 = get_dface(dm, split, cur + 2, i, mf); + + facepa[cur] = vertpa[v1]; + df1->v1 = v1; + df1->v2 = GET_ES(v1, v2); + df1->v3 = GET_ES(v2, v3); + df1->v4 = GET_ES(v1, v3); + df1->flag |= ME_FACE_SEL; + + facepa[cur + 1] = vertpa[v2]; + df2->v1 = GET_ES(v1, v2); + df2->v2 = v2; + df2->v3 = GET_ES(v2, v3); + df2->v4 = 0; + df2->flag &= ~ME_FACE_SEL; + + facepa[cur + 2] = vertpa[v3]; + df3->v1 = GET_ES(v1, v3); + df3->v2 = GET_ES(v2, v3); + df3->v3 = v3; + df3->v4 = 0; + df3->flag &= ~ME_FACE_SEL; +} + +static void remap_uvs_23(DerivedMesh *dm, DerivedMesh *split, int numlayer, int i, int cur, int c0, int c1, int c2) +{ + MTFace *mf, *df1, *df2; + int l; + + for (l = 0; l < numlayer; l++) { + mf = CustomData_get_layer_n(&split->faceData, CD_MTFACE, l); + df1 = mf + cur; + df2 = df1 + 1; + mf = CustomData_get_layer_n(&dm->faceData, CD_MTFACE, l); + mf += i; + + copy_v2_v2(df1->uv[0], mf->uv[c0]); + INT_UV(df1->uv[1], c0, c1); + INT_UV(df1->uv[2], c1, c2); + INT_UV(df1->uv[3], c0, c2); + + INT_UV(df2->uv[0], c0, c1); + copy_v2_v2(df2->uv[1], mf->uv[c1]); + INT_UV(df2->uv[2], c1, c2); + + INT_UV(df2->uv[0], c0, c2); + INT_UV(df2->uv[1], c1, c2); + copy_v2_v2(df2->uv[2], mf->uv[c2]); + } +} + +static DerivedMesh *cutEdges(ExplodeModifierData *emd, DerivedMesh *dm) +{ + DerivedMesh *splitdm; + MFace *mf = NULL, *df1 = NULL; + MFace *mface = dm->getTessFaceArray(dm); + MVert *dupve, *mv; + EdgeHash *edgehash; + EdgeHashIterator *ehi; + int totvert = dm->getNumVerts(dm); + int totface = dm->getNumTessFaces(dm); + + int *facesplit = MEM_callocN(sizeof(int) * totface, "explode_facesplit"); + int *vertpa = MEM_callocN(sizeof(int) * totvert, "explode_vertpa2"); + int *facepa = emd->facepa; + int *fs, totesplit = 0, totfsplit = 0, curdupface = 0; + int i, v1, v2, v3, v4, esplit, + v[4] = {0, 0, 0, 0}, /* To quite gcc barking... */ + uv[4] = {0, 0, 0, 0}; /* To quite gcc barking... */ + int numlayer; + unsigned int ed_v1, ed_v2; + + edgehash = BLI_edgehash_new(__func__); + + /* recreate vertpa from facepa calculation */ + for (i = 0, mf = mface; i < totface; i++, mf++) { + vertpa[mf->v1] = facepa[i]; + vertpa[mf->v2] = facepa[i]; + vertpa[mf->v3] = facepa[i]; + if (mf->v4) + vertpa[mf->v4] = facepa[i]; + } + + /* mark edges for splitting and how to split faces */ + for (i = 0, mf = mface, fs = facesplit; i < totface; i++, mf++, fs++) { + v1 = vertpa[mf->v1]; + v2 = vertpa[mf->v2]; + v3 = vertpa[mf->v3]; + + if (v1 != v2) { + BLI_edgehash_reinsert(edgehash, mf->v1, mf->v2, NULL); + (*fs) |= 1; + } + + if (v2 != v3) { + BLI_edgehash_reinsert(edgehash, mf->v2, mf->v3, NULL); + (*fs) |= 2; + } + + if (mf->v4) { + v4 = vertpa[mf->v4]; + + if (v3 != v4) { + BLI_edgehash_reinsert(edgehash, mf->v3, mf->v4, NULL); + (*fs) |= 4; + } + + if (v1 != v4) { + BLI_edgehash_reinsert(edgehash, mf->v1, mf->v4, NULL); + (*fs) |= 8; + } + + /* mark center vertex as a fake edge split */ + if (*fs == 15) + BLI_edgehash_reinsert(edgehash, mf->v1, mf->v3, NULL); + } + else { + (*fs) |= 16; /* mark face as tri */ + + if (v1 != v3) { + BLI_edgehash_reinsert(edgehash, mf->v1, mf->v3, NULL); + (*fs) |= 4; + } + } + } + + /* count splits & create indexes for new verts */ + ehi = BLI_edgehashIterator_new(edgehash); + totesplit = totvert; + for (; !BLI_edgehashIterator_isDone(ehi); BLI_edgehashIterator_step(ehi)) { + BLI_edgehashIterator_setValue(ehi, SET_INT_IN_POINTER(totesplit)); + totesplit++; + } + BLI_edgehashIterator_free(ehi); + + /* count new faces due to splitting */ + for (i = 0, fs = facesplit; i < totface; i++, fs++) + totfsplit += add_faces[*fs]; + + splitdm = CDDM_from_template_ex( + dm, totesplit, 0, totface + totfsplit, 0, 0, + CD_MASK_DERIVEDMESH | CD_MASK_FACECORNERS); + numlayer = CustomData_number_of_layers(&splitdm->faceData, CD_MTFACE); + + /* copy new faces & verts (is it really this painful with custom data??) */ + for (i = 0; i < totvert; i++) { + MVert source; + MVert *dest; + dm->getVert(dm, i, &source); + dest = CDDM_get_vert(splitdm, i); + + DM_copy_vert_data(dm, splitdm, i, i, 1); + *dest = source; + } + + /* override original facepa (original pointer is saved in caller function) */ + + /* BMESH_TODO, (totfsplit * 2) over allocation is used since the quads are + * later interpreted as tri's, for this to work right I think we probably + * have to stop using tessface - campbell */ + + facepa = MEM_callocN(sizeof(int) * (totface + (totfsplit * 2)), "explode_facepa"); + //memcpy(facepa, emd->facepa, totface*sizeof(int)); + emd->facepa = facepa; + + /* create new verts */ + ehi = BLI_edgehashIterator_new(edgehash); + for (; !BLI_edgehashIterator_isDone(ehi); BLI_edgehashIterator_step(ehi)) { + BLI_edgehashIterator_getKey(ehi, &ed_v1, &ed_v2); + esplit = GET_INT_FROM_POINTER(BLI_edgehashIterator_getValue(ehi)); + mv = CDDM_get_vert(splitdm, ed_v2); + dupve = CDDM_get_vert(splitdm, esplit); + + DM_copy_vert_data(splitdm, splitdm, ed_v2, esplit, 1); + + *dupve = *mv; + + mv = CDDM_get_vert(splitdm, ed_v1); + + mid_v3_v3v3(dupve->co, dupve->co, mv->co); + } + BLI_edgehashIterator_free(ehi); + + /* create new faces */ + curdupface = 0; //=totface; + //curdupin=totesplit; + for (i = 0, fs = facesplit; i < totface; i++, fs++) { + mf = dm->getTessFaceData(dm, i, CD_MFACE); + + switch (*fs) { + case 3: + case 10: + case 11: + case 15: + SET_VERTS(1, 2, 3, 4); + break; + case 5: + case 6: + case 7: + SET_VERTS(2, 3, 4, 1); + break; + case 9: + case 13: + SET_VERTS(4, 1, 2, 3); + break; + case 12: + case 14: + SET_VERTS(3, 4, 1, 2); + break; + case 21: + case 23: + SET_VERTS(1, 2, 3, 4); + break; + case 19: + SET_VERTS(2, 3, 1, 4); + break; + case 22: + SET_VERTS(3, 1, 2, 4); + break; + } + + switch (*fs) { + case 3: + case 6: + case 9: + case 12: + remap_faces_3_6_9_12(dm, splitdm, mf, facepa, vertpa, i, edgehash, curdupface, v[0], v[1], v[2], v[3]); + if (numlayer) + remap_uvs_3_6_9_12(dm, splitdm, numlayer, i, curdupface, uv[0], uv[1], uv[2], uv[3]); + break; + case 5: + case 10: + remap_faces_5_10(dm, splitdm, mf, facepa, vertpa, i, edgehash, curdupface, v[0], v[1], v[2], v[3]); + if (numlayer) + remap_uvs_5_10(dm, splitdm, numlayer, i, curdupface, uv[0], uv[1], uv[2], uv[3]); + break; + case 15: + remap_faces_15(dm, splitdm, mf, facepa, vertpa, i, edgehash, curdupface, v[0], v[1], v[2], v[3]); + if (numlayer) + remap_uvs_15(dm, splitdm, numlayer, i, curdupface, uv[0], uv[1], uv[2], uv[3]); + break; + case 7: + case 11: + case 13: + case 14: + remap_faces_7_11_13_14(dm, splitdm, mf, facepa, vertpa, i, edgehash, curdupface, v[0], v[1], v[2], v[3]); + if (numlayer) + remap_uvs_7_11_13_14(dm, splitdm, numlayer, i, curdupface, uv[0], uv[1], uv[2], uv[3]); + break; + case 19: + case 21: + case 22: + remap_faces_19_21_22(dm, splitdm, mf, facepa, vertpa, i, edgehash, curdupface, v[0], v[1], v[2]); + if (numlayer) + remap_uvs_19_21_22(dm, splitdm, numlayer, i, curdupface, uv[0], uv[1], uv[2]); + break; + case 23: + remap_faces_23(dm, splitdm, mf, facepa, vertpa, i, edgehash, curdupface, v[0], v[1], v[2]); + if (numlayer) + remap_uvs_23(dm, splitdm, numlayer, i, curdupface, uv[0], uv[1], uv[2]); + break; + case 0: + case 16: + df1 = get_dface(dm, splitdm, curdupface, i, mf); + facepa[curdupface] = vertpa[mf->v1]; + + if (df1->v4) + df1->flag |= ME_FACE_SEL; + else + df1->flag &= ~ME_FACE_SEL; + break; + } + + curdupface += add_faces[*fs] + 1; + } + + for (i = 0; i < curdupface; i++) { + mf = CDDM_get_tessface(splitdm, i); + test_index_face(mf, &splitdm->faceData, i, ((mf->flag & ME_FACE_SEL) ? 4 : 3)); + } + + BLI_edgehash_free(edgehash, NULL); + MEM_freeN(facesplit); + MEM_freeN(vertpa); + + CDDM_calc_edges_tessface(splitdm); + CDDM_tessfaces_to_faces(splitdm); /*builds ngon faces from tess (mface) faces*/ + + return splitdm; +} +static DerivedMesh *explodeMesh(ExplodeModifierData *emd, + ParticleSystemModifierData *psmd, Scene *scene, Object *ob, + DerivedMesh *to_explode) +{ + DerivedMesh *explode, *dm = to_explode; + MFace *mf = NULL, *mface; + /* ParticleSettings *part=psmd->psys->part; */ /* UNUSED */ + ParticleSimulationData sim = {NULL}; + ParticleData *pa = NULL, *pars = psmd->psys->particles; + ParticleKey state, birth; + EdgeHash *vertpahash; + EdgeHashIterator *ehi; + float *vertco = NULL, imat[4][4]; + float rot[4]; + float cfra; + /* float timestep; */ + const int *facepa = emd->facepa; + int totdup = 0, totvert = 0, totface = 0, totpart = 0, delface = 0; + int i, v, u; + unsigned int ed_v1, ed_v2, mindex = 0; + MTFace *mtface = NULL, *mtf; + + totface = dm->getNumTessFaces(dm); + totvert = dm->getNumVerts(dm); + mface = dm->getTessFaceArray(dm); + totpart = psmd->psys->totpart; + + sim.scene = scene; + sim.ob = ob; + sim.psys = psmd->psys; + sim.psmd = psmd; + + /* timestep = psys_get_timestep(&sim); */ + + cfra = BKE_scene_frame_get(scene); + + /* hash table for vertice <-> particle relations */ + vertpahash = BLI_edgehash_new(__func__); + + for (i = 0; i < totface; i++) { + if (facepa[i] != totpart) { + pa = pars + facepa[i]; + + if ((pa->alive == PARS_UNBORN && (emd->flag & eExplodeFlag_Unborn) == 0) || + (pa->alive == PARS_ALIVE && (emd->flag & eExplodeFlag_Alive) == 0) || + (pa->alive == PARS_DEAD && (emd->flag & eExplodeFlag_Dead) == 0)) + { + delface++; + continue; + } + } + + /* do mindex + totvert to ensure the vertex index to be the first + * with BLI_edgehashIterator_getKey */ + if (facepa[i] == totpart || cfra < (pars + facepa[i])->time) + mindex = totvert + totpart; + else + mindex = totvert + facepa[i]; + + mf = &mface[i]; + + /* set face vertices to exist in particle group */ + BLI_edgehash_reinsert(vertpahash, mf->v1, mindex, NULL); + BLI_edgehash_reinsert(vertpahash, mf->v2, mindex, NULL); + BLI_edgehash_reinsert(vertpahash, mf->v3, mindex, NULL); + if (mf->v4) + BLI_edgehash_reinsert(vertpahash, mf->v4, mindex, NULL); + } + + /* make new vertice indexes & count total vertices after duplication */ + ehi = BLI_edgehashIterator_new(vertpahash); + for (; !BLI_edgehashIterator_isDone(ehi); BLI_edgehashIterator_step(ehi)) { + BLI_edgehashIterator_setValue(ehi, SET_INT_IN_POINTER(totdup)); + totdup++; + } + BLI_edgehashIterator_free(ehi); + + /* the final duplicated vertices */ + explode = CDDM_from_template_ex(dm, totdup, 0, totface - delface, 0, 0, CD_MASK_DERIVEDMESH | CD_MASK_FACECORNERS); + mtface = CustomData_get_layer_named(&explode->faceData, CD_MTFACE, emd->uvname); + /*dupvert = CDDM_get_verts(explode);*/ + + /* getting back to object space */ + invert_m4_m4(imat, ob->obmat); + + psmd->psys->lattice_deform_data = psys_create_lattice_deform_data(&sim); + + /* duplicate & displace vertices */ + ehi = BLI_edgehashIterator_new(vertpahash); + for (; !BLI_edgehashIterator_isDone(ehi); BLI_edgehashIterator_step(ehi)) { + MVert source; + MVert *dest; + + /* get particle + vertex from hash */ + BLI_edgehashIterator_getKey(ehi, &ed_v1, &ed_v2); + ed_v2 -= totvert; + v = GET_INT_FROM_POINTER(BLI_edgehashIterator_getValue(ehi)); + + dm->getVert(dm, ed_v1, &source); + dest = CDDM_get_vert(explode, v); + + DM_copy_vert_data(dm, explode, ed_v1, v, 1); + *dest = source; + + if (ed_v2 != totpart) { + /* get particle */ + pa = pars + ed_v2; + + psys_get_birth_coords(&sim, pa, &birth, 0, 0); + + state.time = cfra; + psys_get_particle_state(&sim, ed_v2, &state, 1); + + vertco = CDDM_get_vert(explode, v)->co; + mul_m4_v3(ob->obmat, vertco); + + sub_v3_v3(vertco, birth.co); + + /* apply rotation, size & location */ + sub_qt_qtqt(rot, state.rot, birth.rot); + mul_qt_v3(rot, vertco); + + if (emd->flag & eExplodeFlag_PaSize) + mul_v3_fl(vertco, pa->size); + + add_v3_v3(vertco, state.co); + + mul_m4_v3(imat, vertco); + } + } + BLI_edgehashIterator_free(ehi); + + /*map new vertices to faces*/ + for (i = 0, u = 0; i < totface; i++) { + MFace source; + int orig_v4; + + if (facepa[i] != totpart) { + pa = pars + facepa[i]; + + if (pa->alive == PARS_UNBORN && (emd->flag & eExplodeFlag_Unborn) == 0) continue; + if (pa->alive == PARS_ALIVE && (emd->flag & eExplodeFlag_Alive) == 0) continue; + if (pa->alive == PARS_DEAD && (emd->flag & eExplodeFlag_Dead) == 0) continue; + } + + dm->getTessFace(dm, i, &source); + mf = CDDM_get_tessface(explode, u); + + orig_v4 = source.v4; + + if (facepa[i] != totpart && cfra < pa->time) + mindex = totvert + totpart; + else + mindex = totvert + facepa[i]; + + source.v1 = edgecut_get(vertpahash, source.v1, mindex); + source.v2 = edgecut_get(vertpahash, source.v2, mindex); + source.v3 = edgecut_get(vertpahash, source.v3, mindex); + if (source.v4) + source.v4 = edgecut_get(vertpahash, source.v4, mindex); + + DM_copy_tessface_data(dm, explode, i, u, 1); + + *mf = source; + + /* override uv channel for particle age */ + if (mtface) { + float age = (cfra - pa->time) / pa->lifetime; + /* Clamp to this range to avoid flipping to the other side of the coordinates. */ + CLAMP(age, 0.001f, 0.999f); + + mtf = mtface + u; + + mtf->uv[0][0] = mtf->uv[1][0] = mtf->uv[2][0] = mtf->uv[3][0] = age; + mtf->uv[0][1] = mtf->uv[1][1] = mtf->uv[2][1] = mtf->uv[3][1] = 0.5f; + } + + test_index_face(mf, &explode->faceData, u, (orig_v4 ? 4 : 3)); + u++; + } + + /* cleanup */ + BLI_edgehash_free(vertpahash, NULL); + + /* finalization */ + CDDM_calc_edges_tessface(explode); + CDDM_tessfaces_to_faces(explode); + explode->dirty |= DM_DIRTY_NORMALS; + + if (psmd->psys->lattice_deform_data) { + end_latt_deform(psmd->psys->lattice_deform_data); + psmd->psys->lattice_deform_data = NULL; + } + + return explode; +} + +static ParticleSystemModifierData *findPrecedingParticlesystem(Object *ob, ModifierData *emd) +{ + ModifierData *md; + ParticleSystemModifierData *psmd = NULL; + + for (md = ob->modifiers.first; emd != md; md = md->next) { + if (md->type == eModifierType_ParticleSystem) + psmd = (ParticleSystemModifierData *) md; + } + return psmd; +} +static DerivedMesh *applyModifier(ModifierData *md, Object *ob, DerivedMesh *derivedData, ModifierApplyFlag UNUSED(flag)) { + DerivedMesh *dm = derivedData; + ExplodeModifierData *emd = (ExplodeModifierData *) md; + ParticleSystemModifierData *psmd = findPrecedingParticlesystem(ob, md); + + DM_ensure_tessface(dm); /* BMESH - UNTIL MODIFIER IS UPDATED FOR MPoly */ + + if (psmd) { + ParticleSystem *psys = psmd->psys; + + if (psys == NULL || psys->totpart == 0) return derivedData; + if (psys->part == NULL || psys->particles == NULL) return derivedData; + if (psmd->dm_final == NULL) return derivedData; + + /* 1. find faces to be exploded if needed */ + if (emd->facepa == NULL || + psmd->flag & eParticleSystemFlag_Pars || + emd->flag & eExplodeFlag_CalcFaces || + MEM_allocN_len(emd->facepa) / sizeof(int) != dm->getNumTessFaces(dm)) + { + if (psmd->flag & eParticleSystemFlag_Pars) + psmd->flag &= ~eParticleSystemFlag_Pars; + + if (emd->flag & eExplodeFlag_CalcFaces) + emd->flag &= ~eExplodeFlag_CalcFaces; + + createFacepa(emd, psmd, derivedData); + } + /* 2. create new mesh */ + if (emd->flag & eExplodeFlag_EdgeCut) { + int *facepa = emd->facepa; + DerivedMesh *splitdm = cutEdges(emd, dm); + DerivedMesh *explode = explodeMesh(emd, psmd, md->scene, ob, splitdm); + + MEM_freeN(emd->facepa); + emd->facepa = facepa; + splitdm->release(splitdm); + return explode; + } + else + return explodeMesh(emd, psmd, md->scene, ob, derivedData); + } return derivedData; } |