diff options
Diffstat (limited to 'extern/bullet2/src/BulletCollision/CollisionDispatch/btUnionFind.h')
| -rw-r--r-- | extern/bullet2/src/BulletCollision/CollisionDispatch/btUnionFind.h | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/extern/bullet2/src/BulletCollision/CollisionDispatch/btUnionFind.h b/extern/bullet2/src/BulletCollision/CollisionDispatch/btUnionFind.h index b1baca9ff15..236cc33b94f 100644 --- a/extern/bullet2/src/BulletCollision/CollisionDispatch/btUnionFind.h +++ b/extern/bullet2/src/BulletCollision/CollisionDispatch/btUnionFind.h @@ -16,7 +16,10 @@ subject to the following restrictions: #ifndef UNION_FIND_H #define UNION_FIND_H -#include <vector> +#include "../../LinearMath/btAlignedObjectArray.h" + + #define USE_PATH_COMPRESSION 1 + struct btElement { int m_id; @@ -29,7 +32,7 @@ struct btElement class btUnionFind { private: - std::vector<btElement> m_elements; + btAlignedObjectArray<btElement> m_elements; public: @@ -78,6 +81,7 @@ class btUnionFind if (i == j) return; +#ifndef USE_PATH_COMPRESSION //weighted quick union, this keeps the 'trees' balanced, and keeps performance of unite O( log(n) ) if (m_elements[i].m_sz < m_elements[j].m_sz) { @@ -87,6 +91,9 @@ class btUnionFind { m_elements[j].m_id = i; m_elements[i].m_sz += m_elements[j].m_sz; } +#else + m_elements[i].m_id = j; m_elements[j].m_sz += m_elements[i].m_sz; +#endif //USE_PATH_COMPRESSION } int find(int x) @@ -97,7 +104,7 @@ class btUnionFind while (x != m_elements[x].m_id) { //not really a reason not to use path compression, and it flattens the trees/improves find performance dramatically - #define USE_PATH_COMPRESSION 1 + #ifdef USE_PATH_COMPRESSION // m_elements[x].m_id = m_elements[m_elements[x].m_id].m_id; |