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Differential D3691 Diff 11848 source/blender/blenkernel/intern/collision.c

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source/blender/blenkernel/intern/collision.c

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// static collisions // static collisions
//////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////
// update cloth bvh if (clmd->coll_parms->flags & CLOTH_COLLSETTINGS_FLAG_ENABLED) {
bvhtree_update_from_cloth ( clmd, 1 ); // 0 means STATIC, 1 means MOVING (see later in this function) bvhtree_update_from_cloth(clmd, true);
bvhselftree_update_from_cloth ( clmd, 0 ); // 0 means STATIC, 1 means MOVING (see later in this function)
collobjs = BKE_collision_objects_create(depsgraph, ob, clmd->coll_parms->group, &numcollobj, eModifierType_Collision); collobjs = BKE_collision_objects_create(depsgraph, ob, clmd->coll_parms->group, &numcollobj, eModifierType_Collision);
if (!collobjs) if (!collobjs) {
return 0; return 0;
}
/* move object to position (step) in time */ /* Move object to position (step) in time. */
for (i = 0; i < numcollobj; i++) {
Object *collob= collobjs[i];
CollisionModifierData *collmd = (CollisionModifierData *)modifiers_findByType(collob, eModifierType_Collision);
if (!collmd->bvhtree)
continue;
/* move object to position (step) in time */
collision_move_object ( collmd, step + dt, step );
}
do {
CollPair **collisions, **collisions_index;
ret2 = 0;
collisions = MEM_callocN(sizeof(CollPair *) *numcollobj, "CollPair");
collisions_index = MEM_callocN(sizeof(CollPair *) *numcollobj, "CollPair");
// check all collision objects
for (i = 0; i < numcollobj; i++) { for (i = 0; i < numcollobj; i++) {
Object *collob= collobjs[i]; Object *collob = collobjs[i];
CollisionModifierData *collmd = (CollisionModifierData *)modifiers_findByType(collob, eModifierType_Collision); CollisionModifierData *collmd = (CollisionModifierData *)modifiers_findByType(collob, eModifierType_Collision);
BVHTreeOverlap *overlap = NULL;
unsigned int result = 0;
if (!collmd->bvhtree) if (!collmd->bvhtree) {
continue; continue;
/* search for overlapping collision pairs */
overlap = BLI_bvhtree_overlap(cloth_bvh, collmd->bvhtree, &result, NULL, NULL);
// go to next object if no overlap is there
if ( result && overlap ) {
/* check if collisions really happen (costly near check) */
cloth_bvh_objcollisions_nearcheck ( clmd, collmd, &collisions[i],
&collisions_index[i], result, overlap, dt/(float)clmd->coll_parms->loop_count);
// resolve nearby collisions
ret += cloth_bvh_objcollisions_resolve ( clmd, collmd, collisions[i], collisions_index[i]);
ret2 += ret;
} }
if ( overlap ) /* Move object to position (step) in time. */
MEM_freeN ( overlap ); collision_move_object(collmd, step + dt, step);
} }
rounds++; }
for (i = 0; i < numcollobj; i++) { if (clmd->coll_parms->flags & CLOTH_COLLSETTINGS_FLAG_SELF) {
if ( collisions[i] ) MEM_freeN ( collisions[i] ); bvhselftree_update_from_cloth(clmd, false);
} }
do {
ret2 = 0;
if (clmd->coll_parms->flags & CLOTH_COLLSETTINGS_FLAG_ENABLED) {
CollPair **collisions, **collisions_index;
MEM_freeN(collisions); collisions = MEM_callocN(sizeof(CollPair *) *numcollobj, "CollPair");
MEM_freeN(collisions_index); collisions_index = MEM_callocN(sizeof(CollPair *) *numcollobj, "CollPair");
//////////////////////////////////////////////////////////// /* Check all collision objects. */
// update positions for (i = 0; i < numcollobj; i++) {
// this is needed for bvh_calc_DOP_hull_moving() [kdop.c] Object *collob= collobjs[i];
//////////////////////////////////////////////////////////// CollisionModifierData *collmd = (CollisionModifierData *)modifiers_findByType(collob, eModifierType_Collision);
BVHTreeOverlap *overlap = NULL;
unsigned int result = 0;
/* verts come from clmd */ if (!collmd->bvhtree) {
for (i = 0; i < mvert_num; i++) {
if ( clmd->sim_parms->flags & CLOTH_SIMSETTINGS_FLAG_GOAL ) {
if ( verts [i].flags & CLOTH_VERT_FLAG_PINNED ) {
continue; continue;
} }
/* Search for overlapping collision pairs. */
overlap = BLI_bvhtree_overlap(cloth_bvh, collmd->bvhtree, &result, NULL, NULL);
/* Go to next object if no overlap is there. */
if (result && overlap) {
/* Check if collisions really happen (costly near check). */
cloth_bvh_objcollisions_nearcheck(clmd, collmd, &collisions[i], &collisions_index[i],
result, overlap, dt/(float)clmd->coll_parms->loop_count);
/* Resolve nearby collisions. */
ret += cloth_bvh_objcollisions_resolve(clmd, collmd, collisions[i], collisions_index[i]);
ret2 += ret;
}
MEM_SAFE_FREE(overlap);
}
for (i = 0; i < numcollobj; i++) {
MEM_SAFE_FREE(collisions[i]);
} }
VECADD ( verts[i].tx, verts[i].txold, verts[i].tv ); MEM_freeN(collisions);
MEM_freeN(collisions_index);
////////////////////////////////////////////////////////////
// update positions
// this is needed for bvh_calc_DOP_hull_moving() [kdop.c]
////////////////////////////////////////////////////////////
/* Verts come from clmd. */
for (i = 0; i < mvert_num; i++) {
if (clmd->sim_parms->vgroup_mass > 0) {
if (verts [i].flags & CLOTH_VERT_FLAG_PINNED) {
continue;
}
}
VECADD(verts[i].tx, verts[i].txold, verts[i].tv);
}
////////////////////////////////////////////////////////////
} }
////////////////////////////////////////////////////////////
rounds++;
//////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////
// Test on *simple* selfcollisions // Test on *simple* selfcollisions
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mindistance = clmd->coll_parms->selfepsilon* ( cloth->verts[i].avg_spring_len + cloth->verts[j].avg_spring_len ); mindistance = clmd->coll_parms->selfepsilon* ( cloth->verts[i].avg_spring_len + cloth->verts[j].avg_spring_len );
if ( clmd->sim_parms->flags & CLOTH_SIMSETTINGS_FLAG_GOAL ) { if (clmd->sim_parms->vgroup_mass > 0) {
if ( ( cloth->verts [i].flags & CLOTH_VERT_FLAG_PINNED ) && if ( ( cloth->verts [i].flags & CLOTH_VERT_FLAG_PINNED ) &&
( cloth->verts [j].flags & CLOTH_VERT_FLAG_PINNED ) ) ( cloth->verts [j].flags & CLOTH_VERT_FLAG_PINNED ) )
{ {
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// verts come from clmd // verts come from clmd
for (i = 0; i < mvert_num; i++) { for (i = 0; i < mvert_num; i++) {
if ( clmd->sim_parms->flags & CLOTH_SIMSETTINGS_FLAG_GOAL ) { if (clmd->sim_parms->vgroup_mass > 0) {
if ( verts [i].flags & CLOTH_VERT_FLAG_PINNED ) { if ( verts [i].flags & CLOTH_VERT_FLAG_PINNED ) {
continue; continue;
} }
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// verts come from clmd // verts come from clmd
for (i = 0; i < mvert_num; i++) { for (i = 0; i < mvert_num; i++) {
if (clmd->sim_parms->flags & CLOTH_SIMSETTINGS_FLAG_GOAL) { if (clmd->sim_parms->vgroup_mass > 0) {
if (verts [i].flags & CLOTH_VERT_FLAG_PINNED) { if (verts [i].flags & CLOTH_VERT_FLAG_PINNED) {
continue; continue;
} }
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