static void deformVerts(ModifierData *md, Object *ob, DerivedMesh *derivedData, float (*vertexCos)[3], int UNUSED(numVerts), ModifierApplyFlag UNUSED(flag)) { CollisionModifierData *collmd = (CollisionModifierData *) md; DerivedMesh *dm = NULL; MVert *tempVert = NULL; /* if possible use/create DerivedMesh */ if (derivedData) dm = CDDM_copy(derivedData); else if (ob->type == OB_MESH) dm = CDDM_from_mesh(ob->data, ob); if (!ob->pd) { printf("CollisionModifier deformVerts: Should not happen!\n"); return; } if (dm) { float current_time = 0; unsigned int numverts = 0; CDDM_apply_vert_coords(dm, vertexCos); CDDM_calc_normals(dm); current_time = BKE_scene_frame_get(md->scene); if (G.debug_value > 0) printf("current_time %f, collmd->time_xnew %f\n", current_time, collmd->time_xnew); numverts = dm->getNumVerts(dm); if (current_time > collmd->time_xnew) { unsigned int i; /* check if mesh has changed */ if (collmd->x && (numverts != collmd->numverts)) freeData((ModifierData *)collmd); if (collmd->time_xnew == -1000) { /* first time */ collmd->x = dm->dupVertArray(dm); /* frame start position */ for (i = 0; i < numverts; i++) { /* we save global positions */ mul_m4_v3(ob->obmat, collmd->x[i].co); } collmd->xnew = MEM_dupallocN(collmd->x); // frame end position collmd->current_x = MEM_dupallocN(collmd->x); // inter-frame collmd->current_xnew = MEM_dupallocN(collmd->x); // inter-frame collmd->current_v = MEM_dupallocN(collmd->x); // inter-frame collmd->numverts = numverts; DM_ensure_tessface(dm); /* BMESH - UNTIL MODIFIER IS UPDATED FOR MPoly */ collmd->mfaces = dm->dupTessFaceArray(dm); collmd->numfaces = dm->getNumTessFaces(dm); /* create bounding box hierarchy */ collmd->bvhtree = bvhtree_build_from_mvert(collmd->mfaces, collmd->numfaces, collmd->x, numverts, ob->pd->pdef_sboft); collmd->time_x = collmd->time_xnew = current_time; } else if (numverts == collmd->numverts) { /* put positions to old positions */ tempVert = collmd->x; collmd->x = collmd->xnew; collmd->xnew = tempVert; collmd->time_x = collmd->time_xnew; memcpy(collmd->xnew, dm->getVertArray(dm), numverts * sizeof(MVert)); for (i = 0; i < numverts; i++) { /* we save global positions */ mul_m4_v3(ob->obmat, collmd->xnew[i].co); } memcpy(collmd->current_xnew, collmd->x, numverts * sizeof(MVert)); memcpy(collmd->current_x, collmd->x, numverts * sizeof(MVert)); /* check if GUI setting has changed for bvh */ if (collmd->bvhtree) { if (ob->pd->pdef_sboft != BLI_bvhtree_getepsilon(collmd->bvhtree)) { BLI_bvhtree_free(collmd->bvhtree); collmd->bvhtree = bvhtree_build_from_mvert(collmd->mfaces, collmd->numfaces, collmd->current_x, numverts, ob->pd->pdef_sboft); } } /* happens on file load (ONLY when i decomment changes in readfile.c) */ if (!collmd->bvhtree) { collmd->bvhtree = bvhtree_build_from_mvert(collmd->mfaces, collmd->numfaces, collmd->current_x, numverts, ob->pd->pdef_sboft); } else { /* recalc static bounding boxes */ bvhtree_update_from_mvert(collmd->bvhtree, collmd->mfaces, collmd->numfaces, collmd->current_x, collmd->current_xnew, collmd->numverts, 1); } collmd->time_xnew = current_time; } else if (numverts != collmd->numverts) { freeData((ModifierData *)collmd); } } else if (current_time < collmd->time_xnew) { freeData((ModifierData *)collmd); } else { if (numverts != collmd->numverts) { freeData((ModifierData *)collmd); } } } if (dm) dm->release(dm); }