static void deformVerts(ModifierData *md, Object *ob,
DerivedMesh *derivedData,
float (*vertexCos)[3],
int UNUSED(numVerts),
int UNUSED(useRenderParams),
int UNUSED(isFinalCalc))
{
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_curframe(md->scene);
if(G.rt > 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)|| (BKE_ptcache_get_continue_physics()))
{
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;
collmd->mfaces = dm->dupFaceArray(dm);
collmd->numfaces = dm->getNumFaces(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);
}
