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Merge pull request #47614 from lawnjelly/bvh_check_userdata

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BVH - prevent self collisions
This commit is contained in:
Rémi Verschelde 2021-04-04 12:46:00 +02:00 committed by GitHub
commit 22e8fe7bfe
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 16 additions and 6 deletions
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22
core/math/bvh.h
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@ -472,6 +472,14 @@ private:
void _unpair(BVHHandle p_from, BVHHandle p_to) { void _unpair(BVHHandle p_from, BVHHandle p_to) {
tree._handle_sort(p_from, p_to); tree._handle_sort(p_from, p_to);
typename BVHTREE_CLASS::ItemExtra &exa = tree._extra[p_from.id()];
typename BVHTREE_CLASS::ItemExtra &exb = tree._extra[p_to.id()];
// if the userdata is the same, no collisions should occur
if ((exa.userdata == exb.userdata) && exa.userdata) {
return;
}
typename BVHTREE_CLASS::ItemPairs &pairs_from = tree._pairs[p_from.id()]; typename BVHTREE_CLASS::ItemPairs &pairs_from = tree._pairs[p_from.id()];
typename BVHTREE_CLASS::ItemPairs &pairs_to = tree._pairs[p_to.id()]; typename BVHTREE_CLASS::ItemPairs &pairs_to = tree._pairs[p_to.id()];
@ -481,9 +489,6 @@ private:
// callback // callback
if (unpair_callback) { if (unpair_callback) {
typename BVHTREE_CLASS::ItemExtra &exa = tree._extra[p_from.id()];
typename BVHTREE_CLASS::ItemExtra &exb = tree._extra[p_to.id()];
unpair_callback(pair_callback_userdata, p_from, exa.userdata, exa.subindex, p_to, exb.userdata, exb.subindex, ud_from); unpair_callback(pair_callback_userdata, p_from, exa.userdata, exa.subindex, p_to, exb.userdata, exb.subindex, ud_from);
} }
} }
@ -544,6 +549,14 @@ private:
// only have to do this oneway, lower ID then higher ID // only have to do this oneway, lower ID then higher ID
tree._handle_sort(p_ha, p_hb); tree._handle_sort(p_ha, p_hb);
const typename BVHTREE_CLASS::ItemExtra &exa = _get_extra(p_ha);
const typename BVHTREE_CLASS::ItemExtra &exb = _get_extra(p_hb);
// if the userdata is the same, no collisions should occur
if ((exa.userdata == exb.userdata) && exa.userdata) {
return;
}
typename BVHTREE_CLASS::ItemPairs &p_from = tree._pairs[p_ha.id()]; typename BVHTREE_CLASS::ItemPairs &p_from = tree._pairs[p_ha.id()];
typename BVHTREE_CLASS::ItemPairs &p_to = tree._pairs[p_hb.id()]; typename BVHTREE_CLASS::ItemPairs &p_to = tree._pairs[p_hb.id()];
@ -561,9 +574,6 @@ private:
void *callback_userdata = nullptr; void *callback_userdata = nullptr;
if (pair_callback) { if (pair_callback) {
const typename BVHTREE_CLASS::ItemExtra &exa = _get_extra(p_ha);
const typename BVHTREE_CLASS::ItemExtra &exb = _get_extra(p_hb);
callback_userdata = pair_callback(pair_callback_userdata, p_ha, exa.userdata, exa.subindex, p_hb, exb.userdata, exb.subindex); callback_userdata = pair_callback(pair_callback_userdata, p_ha, exa.userdata, exa.subindex, p_hb, exb.userdata, exb.subindex);
} }