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BVH - detect shrinkage within expanded bounds
Although the expanded bounds were working in normal use, for moving and growing objects, there was one case which was not dealt with properly - significant shrinkage of exact bounds within an expanded bound. This PR detects significant shrinkage and forces a new expanded bound to be created.
This commit is contained in:
lawnjelly
parent
c3a6b0f418
commit
ed47570266
@ -49,10 +49,10 @@
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#include "bvh_tree.h"
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#include "core/os/mutex.h"
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#define BVHTREE_CLASS BVH_Tree<T, 2, MAX_ITEMS, USE_PAIRS, Bounds, Point>
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#define BVHTREE_CLASS BVH_Tree<T, 2, MAX_ITEMS, USE_PAIRS, BOUNDS, POINT>
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#define BVH_LOCKED_FUNCTION BVHLockedFunction(&_mutex, BVH_THREAD_SAFE &&_thread_safe);
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template <class T, bool USE_PAIRS = false, int MAX_ITEMS = 32, class Bounds = AABB, class Point = Vector3, bool BVH_THREAD_SAFE = true>
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template <class T, bool USE_PAIRS = false, int MAX_ITEMS = 32, class BOUNDS = AABB, class POINT = Vector3, bool BVH_THREAD_SAFE = true>
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class BVH_Manager {
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public:
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// note we are using uint32_t instead of BVHHandle, losing type safety, but this
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@ -80,12 +80,7 @@ public:
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void params_set_pairing_expansion(real_t p_value) {
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BVH_LOCKED_FUNCTION
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if (p_value >= 0.0) {
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tree._pairing_expansion = p_value;
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tree._auto_pairing_expansion = false;
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} else {
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tree._auto_pairing_expansion = true;
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}
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tree.params_set_pairing_expansion(p_value);
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}
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void set_pair_callback(PairCallback p_callback, void *p_userdata) {
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@ -104,7 +99,7 @@ public:
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check_pair_callback_userdata = p_userdata;
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}
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BVHHandle create(T *p_userdata, bool p_active, const Bounds &p_aabb = Bounds(), int p_subindex = 0, bool p_pairable = false, uint32_t p_pairable_type = 0, uint32_t p_pairable_mask = 1) {
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BVHHandle create(T *p_userdata, bool p_active, const BOUNDS &p_aabb = BOUNDS(), int p_subindex = 0, bool p_pairable = false, uint32_t p_pairable_type = 0, uint32_t p_pairable_mask = 1) {
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BVH_LOCKED_FUNCTION
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// not sure if absolutely necessary to flush collisions here. It will cost performance to, instead
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@ -125,7 +120,7 @@ public:
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if (USE_PAIRS) {
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// for safety initialize the expanded AABB
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Bounds &expanded_aabb = tree._pairs[h.id()].expanded_aabb;
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BOUNDS &expanded_aabb = tree._pairs[h.id()].expanded_aabb;
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expanded_aabb = p_aabb;
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expanded_aabb.grow_by(tree._pairing_expansion);
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@ -142,7 +137,7 @@ public:
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////////////////////////////////////////////////////
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// wrapper versions that use uint32_t instead of handle
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// for backward compatibility. Less type safe
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void move(uint32_t p_handle, const Bounds &p_aabb) {
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void move(uint32_t p_handle, const BOUNDS &p_aabb) {
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BVHHandle h;
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h.set(p_handle);
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move(h, p_aabb);
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@ -166,7 +161,7 @@ public:
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force_collision_check(h);
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}
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bool activate(uint32_t p_handle, const Bounds &p_aabb, bool p_delay_collision_check = false) {
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bool activate(uint32_t p_handle, const BOUNDS &p_aabb, bool p_delay_collision_check = false) {
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BVHHandle h;
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h.set(p_handle);
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return activate(h, p_aabb, p_delay_collision_check);
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@ -203,7 +198,7 @@ public:
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////////////////////////////////////////////////////
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void move(BVHHandle p_handle, const Bounds &p_aabb) {
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void move(BVHHandle p_handle, const BOUNDS &p_aabb) {
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BVH_LOCKED_FUNCTION
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if (tree.item_move(p_handle, p_aabb)) {
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if (USE_PAIRS) {
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@ -239,7 +234,7 @@ public:
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BVH_LOCKED_FUNCTION
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if (USE_PAIRS) {
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// the aabb should already be up to date in the BVH
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Bounds aabb;
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BOUNDS aabb;
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item_get_AABB(p_handle, aabb);
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// add it as changed even if aabb not different
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@ -253,7 +248,7 @@ public:
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// these should be read as set_visible for render trees,
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// but generically this makes items add or remove from the
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// tree internally, to speed things up by ignoring inactive items
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bool activate(BVHHandle p_handle, const Bounds &p_aabb, bool p_delay_collision_check = false) {
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bool activate(BVHHandle p_handle, const BOUNDS &p_aabb, bool p_delay_collision_check = false) {
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BVH_LOCKED_FUNCTION
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// sending the aabb here prevents the need for the BVH to maintain
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// a redundant copy of the aabb.
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@ -331,7 +326,7 @@ public:
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// when the pairable state changes, we need to force a collision check because newly pairable
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// items may be in collision, and unpairable items might move out of collision.
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// We cannot depend on waiting for the next update, because that may come much later.
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Bounds aabb;
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BOUNDS aabb;
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item_get_AABB(p_handle, aabb);
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// passing false disables the optimization which prevents collision checks if
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@ -348,7 +343,7 @@ public:
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}
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// cull tests
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int cull_aabb(const Bounds &p_aabb, T **p_result_array, int p_result_max, int *p_subindex_array = nullptr, uint32_t p_mask = 0xFFFFFFFF) {
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int cull_aabb(const BOUNDS &p_aabb, T **p_result_array, int p_result_max, int *p_subindex_array = nullptr, uint32_t p_mask = 0xFFFFFFFF) {
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BVH_LOCKED_FUNCTION
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typename BVHTREE_CLASS::CullParams params;
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@ -366,7 +361,7 @@ public:
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return params.result_count_overall;
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}
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int cull_segment(const Point &p_from, const Point &p_to, T **p_result_array, int p_result_max, int *p_subindex_array = nullptr, uint32_t p_mask = 0xFFFFFFFF) {
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int cull_segment(const POINT &p_from, const POINT &p_to, T **p_result_array, int p_result_max, int *p_subindex_array = nullptr, uint32_t p_mask = 0xFFFFFFFF) {
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BVH_LOCKED_FUNCTION
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typename BVHTREE_CLASS::CullParams params;
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@ -385,7 +380,7 @@ public:
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return params.result_count_overall;
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}
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int cull_point(const Point &p_point, T **p_result_array, int p_result_max, int *p_subindex_array = nullptr, uint32_t p_mask = 0xFFFFFFFF) {
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int cull_point(const POINT &p_point, T **p_result_array, int p_result_max, int *p_subindex_array = nullptr, uint32_t p_mask = 0xFFFFFFFF) {
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BVH_LOCKED_FUNCTION
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typename BVHTREE_CLASS::CullParams params;
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@ -439,7 +434,7 @@ private:
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return;
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}
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Bounds bb;
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BOUNDS bb;
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typename BVHTREE_CLASS::CullParams params;
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@ -454,7 +449,7 @@ private:
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const BVHHandle &h = changed_items[n];
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// use the expanded aabb for pairing
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const Bounds &expanded_aabb = tree._pairs[h.id()].expanded_aabb;
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const BOUNDS &expanded_aabb = tree._pairs[h.id()].expanded_aabb;
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BVHABB_CLASS abb;
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abb.from(expanded_aabb);
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@ -501,7 +496,7 @@ private:
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}
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public:
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void item_get_AABB(BVHHandle p_handle, Bounds &r_aabb) {
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void item_get_AABB(BVHHandle p_handle, BOUNDS &r_aabb) {
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BVHABB_CLASS abb;
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tree.item_get_ABB(p_handle, abb);
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abb.to(r_aabb);
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@ -530,6 +525,10 @@ private:
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void *ud_from = pairs_from.remove_pair_to(p_to);
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pairs_to.remove_pair_to(p_from);
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#ifdef BVH_VERBOSE_PAIRING
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print_line("_unpair " + itos(p_from.id()) + " from " + itos(p_to.id()));
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#endif
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// callback
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if (unpair_callback) {
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unpair_callback(pair_callback_userdata, p_from, exa.userdata, exa.subindex, p_to, exb.userdata, exb.subindex, ud_from);
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@ -637,6 +636,10 @@ private:
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// callback
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void *callback_userdata = nullptr;
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#ifdef BVH_VERBOSE_PAIRING
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print_line("_pair " + itos(p_ha.id()) + " to " + itos(p_hb.id()));
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#endif
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if (pair_callback) {
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callback_userdata = pair_callback(pair_callback_userdata, p_ha, exa.userdata, exa.subindex, p_hb, exb.userdata, exb.subindex);
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}
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@ -697,19 +700,19 @@ private:
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_tick++;
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}
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void _add_changed_item(BVHHandle p_handle, const Bounds &aabb, bool p_check_aabb = true) {
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void _add_changed_item(BVHHandle p_handle, const BOUNDS &aabb, bool p_check_aabb = true) {
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// Note that non pairable items can pair with pairable,
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// so all types must be added to the list
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// aabb check with expanded aabb. This greatly decreases processing
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// at the cost of slightly less accurate pairing checks
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// Note this pairing AABB is separate from the AABB in the actual tree
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Bounds &expanded_aabb = tree._pairs[p_handle.id()].expanded_aabb;
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BOUNDS &expanded_aabb = tree._pairs[p_handle.id()].expanded_aabb;
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// passing p_check_aabb false disables the optimization which prevents collision checks if
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// the aabb hasn't changed. This is needed where set_pairable has been called, but the position
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// has not changed.
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if (p_check_aabb && expanded_aabb.encloses(aabb)) {
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if (p_check_aabb && tree.expanded_aabb_encloses_not_shrink(expanded_aabb, aabb)) {
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return;
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}
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@ -32,7 +32,7 @@
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#define BVH_ABB_H
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// special optimized version of axis aligned bounding box
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template <class Bounds = AABB, class Point = Vector3>
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template <class BOUNDS = AABB, class POINT = Vector3>
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struct BVH_ABB {
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struct ConvexHull {
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// convex hulls (optional)
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@ -43,8 +43,8 @@ struct BVH_ABB {
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};
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struct Segment {
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Point from;
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Point to;
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POINT from;
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POINT to;
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};
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enum IntersectResult {
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@ -54,47 +54,47 @@ struct BVH_ABB {
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};
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// we store mins with a negative value in order to test them with SIMD
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Point min;
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Point neg_max;
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POINT min;
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POINT neg_max;
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bool operator==(const BVH_ABB &o) const { return (min == o.min) && (neg_max == o.neg_max); }
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bool operator!=(const BVH_ABB &o) const { return (*this == o) == false; }
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void set(const Point &_min, const Point &_max) {
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void set(const POINT &_min, const POINT &_max) {
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min = _min;
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neg_max = -_max;
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}
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// to and from standard AABB
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void from(const Bounds &p_aabb) {
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void from(const BOUNDS &p_aabb) {
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min = p_aabb.position;
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neg_max = -(p_aabb.position + p_aabb.size);
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}
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void to(Bounds &r_aabb) const {
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void to(BOUNDS &r_aabb) const {
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r_aabb.position = min;
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r_aabb.size = calculate_size();
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}
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void merge(const BVH_ABB &p_o) {
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for (int axis = 0; axis < Point::AXIS_COUNT; ++axis) {
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for (int axis = 0; axis < POINT::AXIS_COUNT; ++axis) {
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neg_max[axis] = MIN(neg_max[axis], p_o.neg_max[axis]);
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min[axis] = MIN(min[axis], p_o.min[axis]);
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}
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}
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Point calculate_size() const {
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POINT calculate_size() const {
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return -neg_max - min;
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}
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Point calculate_centre() const {
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return Point((calculate_size() * 0.5) + min);
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POINT calculate_centre() const {
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return POINT((calculate_size() * 0.5) + min);
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}
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real_t get_proximity_to(const BVH_ABB &p_b) const {
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const Point d = (min - neg_max) - (p_b.min - p_b.neg_max);
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const POINT d = (min - neg_max) - (p_b.min - p_b.neg_max);
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real_t proximity = 0.0;
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for (int axis = 0; axis < Point::AXIS_COUNT; ++axis) {
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for (int axis = 0; axis < POINT::AXIS_COUNT; ++axis) {
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proximity += Math::abs(d[axis]);
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}
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return proximity;
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@ -162,7 +162,7 @@ struct BVH_ABB {
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}
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bool intersects_convex_partial(const ConvexHull &p_hull) const {
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Bounds bb;
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BOUNDS bb;
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to(bb);
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return bb.intersects_convex_shape(p_hull.planes, p_hull.num_planes, p_hull.points, p_hull.num_points);
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}
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@ -182,7 +182,7 @@ struct BVH_ABB {
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bool is_within_convex(const ConvexHull &p_hull) const {
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// use half extents routine
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Bounds bb;
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BOUNDS bb;
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to(bb);
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return bb.inside_convex_shape(p_hull.planes, p_hull.num_planes);
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}
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@ -197,12 +197,12 @@ struct BVH_ABB {
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}
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bool intersects_segment(const Segment &p_s) const {
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Bounds bb;
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BOUNDS bb;
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to(bb);
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return bb.intersects_segment(p_s.from, p_s.to);
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}
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bool intersects_point(const Point &p_pt) const {
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bool intersects_point(const POINT &p_pt) const {
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if (_any_lessthan(-p_pt, neg_max)) {
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return false;
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}
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@ -232,20 +232,20 @@ struct BVH_ABB {
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return true;
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}
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void grow(const Point &p_change) {
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void grow(const POINT &p_change) {
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neg_max -= p_change;
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min -= p_change;
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}
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void expand(real_t p_change) {
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Point change;
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POINT change;
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change.set_all(p_change);
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grow(change);
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}
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// Actually surface area metric.
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float get_area() const {
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Point d = calculate_size();
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POINT d = calculate_size();
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return 2.0f * (d.x * d.y + d.y * d.z + d.z * d.x);
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}
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@ -254,8 +254,8 @@ struct BVH_ABB {
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min = neg_max;
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}
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bool _any_morethan(const Point &p_a, const Point &p_b) const {
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for (int axis = 0; axis < Point::AXIS_COUNT; ++axis) {
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bool _any_morethan(const POINT &p_a, const POINT &p_b) const {
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for (int axis = 0; axis < POINT::AXIS_COUNT; ++axis) {
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if (p_a[axis] > p_b[axis]) {
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return true;
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}
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@ -263,8 +263,8 @@ struct BVH_ABB {
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return false;
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}
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bool _any_lessthan(const Point &p_a, const Point &p_b) const {
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for (int axis = 0; axis < Point::AXIS_COUNT; ++axis) {
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bool _any_lessthan(const POINT &p_a, const POINT &p_b) const {
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for (int axis = 0; axis < POINT::AXIS_COUNT; ++axis) {
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if (p_a[axis] < p_b[axis]) {
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return true;
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}
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@ -14,7 +14,7 @@ struct CullParams {
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uint32_t pairable_type;
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// optional components for different tests
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Point point;
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POINT point;
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BVHABB_CLASS abb;
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typename BVHABB_CLASS::ConvexHull hull;
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typename BVHABB_CLASS::Segment segment;
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@ -6,12 +6,12 @@ void _debug_recursive_print_tree(int p_tree_id) const {
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}
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String _debug_aabb_to_string(const BVHABB_CLASS &aabb) const {
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Point size = aabb.calculate_size();
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POINT size = aabb.calculate_size();
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String sz;
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float vol = 0.0;
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for (int i = 0; i < Point::AXES_COUNT; ++i) {
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for (int i = 0; i < POINT::AXIS_COUNT; ++i) {
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sz += "(";
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sz += itos(aabb.min[i]);
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sz += " ~ ";
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@ -14,10 +14,10 @@ struct ItemPairs {
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void clear() {
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num_pairs = 0;
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extended_pairs.reset();
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expanded_aabb = Bounds();
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expanded_aabb = BOUNDS();
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}
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Bounds expanded_aabb;
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BOUNDS expanded_aabb;
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// maybe we can just use the number in the vector TODO
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int32_t num_pairs;
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@ -1,5 +1,5 @@
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public:
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BVHHandle item_add(T *p_userdata, bool p_active, const Bounds &p_aabb, int32_t p_subindex, bool p_pairable, uint32_t p_pairable_type, uint32_t p_pairable_mask, bool p_invisible = false) {
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BVHHandle item_add(T *p_userdata, bool p_active, const BOUNDS &p_aabb, int32_t p_subindex, bool p_pairable, uint32_t p_pairable_type, uint32_t p_pairable_mask, bool p_invisible = false) {
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#ifdef BVH_VERBOSE_TREE
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VERBOSE_PRINT("\nitem_add BEFORE");
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_debug_recursive_print_tree(0);
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@ -103,7 +103,7 @@ void _debug_print_refs() {
|
||||
}
|
||||
|
||||
// returns false if noop
|
||||
bool item_move(BVHHandle p_handle, const Bounds &p_aabb) {
|
||||
bool item_move(BVHHandle p_handle, const BOUNDS &p_aabb) {
|
||||
uint32_t ref_id = p_handle.id();
|
||||
|
||||
// get the reference
|
||||
@ -118,7 +118,7 @@ bool item_move(BVHHandle p_handle, const Bounds &p_aabb) {
|
||||
BVH_ASSERT(ref.tnode_id != BVHCommon::INVALID);
|
||||
TNode &tnode = _nodes[ref.tnode_id];
|
||||
|
||||
// does it fit within the current aabb?
|
||||
// does it fit within the current leaf aabb?
|
||||
if (tnode.aabb.is_other_within(abb)) {
|
||||
// do nothing .. fast path .. not moved enough to need refit
|
||||
|
||||
@ -133,12 +133,20 @@ bool item_move(BVHHandle p_handle, const Bounds &p_aabb) {
|
||||
return false;
|
||||
}
|
||||
|
||||
#ifdef BVH_VERBOSE_MOVES
|
||||
print_line("item_move " + itos(p_handle.id()) + "(within tnode aabb) : " + _debug_aabb_to_string(abb));
|
||||
#endif
|
||||
|
||||
leaf_abb = abb;
|
||||
_integrity_check_all();
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
#ifdef BVH_VERBOSE_MOVES
|
||||
print_line("item_move " + itos(p_handle.id()) + "(outside tnode aabb) : " + _debug_aabb_to_string(abb));
|
||||
#endif
|
||||
|
||||
uint32_t tree_id = _handle_get_tree_id(p_handle);
|
||||
|
||||
// remove and reinsert
|
||||
@ -206,7 +214,7 @@ void item_remove(BVHHandle p_handle) {
|
||||
}
|
||||
|
||||
// returns success
|
||||
bool item_activate(BVHHandle p_handle, const Bounds &p_aabb) {
|
||||
bool item_activate(BVHHandle p_handle, const BOUNDS &p_aabb) {
|
||||
uint32_t ref_id = p_handle.id();
|
||||
ItemRef &ref = _refs[ref_id];
|
||||
if (ref.is_active()) {
|
||||
@ -403,7 +411,7 @@ void update() {
|
||||
|
||||
// if there are no nodes, do nothing, but if there are...
|
||||
if (bound_valid) {
|
||||
Bounds bb;
|
||||
BOUNDS bb;
|
||||
world_bound.to(bb);
|
||||
real_t size = bb.get_longest_axis_size();
|
||||
|
||||
@ -421,3 +429,50 @@ void update() {
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
void params_set_pairing_expansion(real_t p_value) {
|
||||
if (p_value < 0.0) {
|
||||
#ifdef BVH_ALLOW_AUTO_EXPANSION
|
||||
_auto_pairing_expansion = true;
|
||||
#endif
|
||||
return;
|
||||
}
|
||||
#ifdef BVH_ALLOW_AUTO_EXPANSION
|
||||
_auto_pairing_expansion = false;
|
||||
#endif
|
||||
|
||||
_pairing_expansion = p_value;
|
||||
|
||||
// calculate shrinking threshold
|
||||
const real_t fudge_factor = 1.1;
|
||||
_aabb_shrinkage_threshold = _pairing_expansion * POINT::AXIS_COUNT * 2.0 * fudge_factor;
|
||||
}
|
||||
|
||||
// This routine is not just an enclose check, it also checks for special case of shrinkage
|
||||
bool expanded_aabb_encloses_not_shrink(const BOUNDS &p_expanded_aabb, const BOUNDS &p_aabb) const {
|
||||
if (!p_expanded_aabb.encloses(p_aabb)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
// Check for special case of shrinkage. If the aabb has shrunk
|
||||
// significantly we want to create a new expanded bound, because
|
||||
// the previous expanded bound will have diverged significantly.
|
||||
const POINT &exp_size = p_expanded_aabb.size;
|
||||
const POINT &new_size = p_aabb.size;
|
||||
|
||||
real_t exp_l = 0.0;
|
||||
real_t new_l = 0.0;
|
||||
|
||||
for (int i = 0; i < POINT::AXIS_COUNT; ++i) {
|
||||
exp_l += exp_size[i];
|
||||
new_l += new_size[i];
|
||||
}
|
||||
|
||||
// is difference above some metric
|
||||
real_t diff = exp_l - new_l;
|
||||
if (diff < _aabb_shrinkage_threshold) {
|
||||
return true;
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
@ -25,16 +25,16 @@ void _split_leaf_sort_groups_simple(int &num_a, int &num_b, uint16_t *group_a, u
|
||||
return;
|
||||
}
|
||||
|
||||
Point centre = full_bound.calculate_centre();
|
||||
Point size = full_bound.calculate_size();
|
||||
POINT centre = full_bound.calculate_centre();
|
||||
POINT size = full_bound.calculate_size();
|
||||
|
||||
int order[Point::AXIS_COUNT];
|
||||
int order[POINT::AXIS_COUNT];
|
||||
|
||||
order[0] = size.min_axis();
|
||||
order[Point::AXIS_COUNT - 1] = size.max_axis();
|
||||
order[POINT::AXIS_COUNT - 1] = size.max_axis();
|
||||
|
||||
static_assert(Point::AXIS_COUNT <= 3, "BVH Point::AXIS_COUNT has unexpected size");
|
||||
if (Point::AXIS_COUNT == 3) {
|
||||
static_assert(POINT::AXIS_COUNT <= 3, "BVH POINT::AXIS_COUNT has unexpected size");
|
||||
if (POINT::AXIS_COUNT == 3) {
|
||||
order[1] = 3 - (order[0] + order[2]);
|
||||
}
|
||||
|
||||
@ -58,7 +58,7 @@ void _split_leaf_sort_groups_simple(int &num_a, int &num_b, uint16_t *group_a, u
|
||||
|
||||
// detect when split on longest axis failed
|
||||
int min_threshold = MAX_ITEMS / 4;
|
||||
int min_group_size[Point::AXIS_COUNT];
|
||||
int min_group_size[POINT::AXIS_COUNT];
|
||||
min_group_size[0] = MIN(num_a, num_b);
|
||||
if (min_group_size[0] < min_threshold) {
|
||||
// slow but sure .. first move everything back into a
|
||||
@ -68,7 +68,7 @@ void _split_leaf_sort_groups_simple(int &num_a, int &num_b, uint16_t *group_a, u
|
||||
num_b = 0;
|
||||
|
||||
// now calculate the best split
|
||||
for (int axis = 1; axis < Point::AXIS_COUNT; axis++) {
|
||||
for (int axis = 1; axis < POINT::AXIS_COUNT; axis++) {
|
||||
split_axis = order[axis];
|
||||
int count = 0;
|
||||
|
||||
@ -86,7 +86,7 @@ void _split_leaf_sort_groups_simple(int &num_a, int &num_b, uint16_t *group_a, u
|
||||
// best axis
|
||||
int best_axis = 0;
|
||||
int best_min = min_group_size[0];
|
||||
for (int axis = 1; axis < Point::AXIS_COUNT; axis++) {
|
||||
for (int axis = 1; axis < POINT::AXIS_COUNT; axis++) {
|
||||
if (min_group_size[axis] > best_min) {
|
||||
best_min = min_group_size[axis];
|
||||
best_axis = axis;
|
||||
|
||||
@ -29,12 +29,6 @@ struct ItemExtra {
|
||||
T *userdata;
|
||||
};
|
||||
|
||||
// this is an item OR a child node depending on whether a leaf node
|
||||
struct Item {
|
||||
BVHABB_CLASS aabb;
|
||||
uint32_t item_ref_id;
|
||||
};
|
||||
|
||||
// tree leaf
|
||||
struct TLeaf {
|
||||
uint16_t num_items;
|
||||
@ -177,4 +171,14 @@ bool _auto_node_expansion = true;
|
||||
// larger values gives more 'sticky' pairing, and is less likely to exhibit tunneling
|
||||
// we can either use auto mode, where the expansion is based on the root node size, or specify manually
|
||||
real_t _pairing_expansion = 0.1;
|
||||
|
||||
#ifdef BVH_ALLOW_AUTO_EXPANSION
|
||||
bool _auto_pairing_expansion = true;
|
||||
#endif
|
||||
|
||||
// when using an expanded bound, we must detect the condition where a new AABB
|
||||
// is significantly smaller than the expanded bound, as this is a special case where we
|
||||
// should override the optimization and create a new expanded bound.
|
||||
// This threshold is derived from the _pairing_expansion, and should be recalculated
|
||||
// if _pairing_expansion is changed.
|
||||
real_t _aabb_shrinkage_threshold = 0.0;
|
||||
|
||||
@ -48,12 +48,14 @@
|
||||
#include "core/print_string.h"
|
||||
#include <limits.h>
|
||||
|
||||
#define BVHABB_CLASS BVH_ABB<Bounds, Point>
|
||||
#define BVHABB_CLASS BVH_ABB<BOUNDS, POINT>
|
||||
|
||||
// never do these checks in release
|
||||
#if defined(TOOLS_ENABLED) && defined(DEBUG_ENABLED)
|
||||
//#define BVH_VERBOSE
|
||||
//#define BVH_VERBOSE_TREE
|
||||
//#define BVH_VERBOSE_PAIRING
|
||||
//#define BVH_VERBOSE_MOVES
|
||||
|
||||
//#define BVH_VERBOSE_FRAME
|
||||
//#define BVH_CHECKS
|
||||
@ -148,7 +150,7 @@ public:
|
||||
}
|
||||
};
|
||||
|
||||
template <class T, int MAX_CHILDREN, int MAX_ITEMS, bool USE_PAIRS = false, class Bounds = AABB, class Point = Vector3>
|
||||
template <class T, int MAX_CHILDREN, int MAX_ITEMS, bool USE_PAIRS = false, class BOUNDS = AABB, class POINT = Vector3>
|
||||
class BVH_Tree {
|
||||
friend class BVH;
|
||||
|
||||
@ -165,6 +167,11 @@ public:
|
||||
// (as these ids are stored as negative numbers in the node)
|
||||
uint32_t dummy_leaf_id;
|
||||
_leaves.request(dummy_leaf_id);
|
||||
|
||||
// In many cases you may want to change this default in the client code,
|
||||
// or expose this value to the user.
|
||||
// This default may make sense for a typically scaled 3d game, but maybe not for 2d on a pixel scale.
|
||||
params_set_pairing_expansion(0.1);
|
||||
}
|
||||
|
||||
private:
|
||||
|
||||
Loading…
Reference in New Issue
Block a user