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Diffstat (limited to 'extern/bullet2/LinearMath/btAlignedObjectArray.h')
| -rw-r--r-- | extern/bullet2/LinearMath/btAlignedObjectArray.h | 464 |
1 files changed, 0 insertions, 464 deletions
diff --git a/extern/bullet2/LinearMath/btAlignedObjectArray.h b/extern/bullet2/LinearMath/btAlignedObjectArray.h deleted file mode 100644 index 257317b21f7..00000000000 --- a/extern/bullet2/LinearMath/btAlignedObjectArray.h +++ /dev/null @@ -1,464 +0,0 @@ -/* -Bullet Continuous Collision Detection and Physics Library -Copyright (c) 2003-2006 Erwin Coumans http://continuousphysics.com/Bullet/ - -This software is provided 'as-is', without any express or implied warranty. -In no event will the authors be held liable for any damages arising from the use of this software. -Permission is granted to anyone to use this software for any purpose, -including commercial applications, and to alter it and redistribute it freely, -subject to the following restrictions: - -1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. -2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. -3. This notice may not be removed or altered from any source distribution. -*/ - - -#ifndef BT_OBJECT_ARRAY__ -#define BT_OBJECT_ARRAY__ - -#include "btScalar.h" // has definitions like SIMD_FORCE_INLINE -#include "btAlignedAllocator.h" - -///If the platform doesn't support placement new, you can disable BT_USE_PLACEMENT_NEW -///then the btAlignedObjectArray doesn't support objects with virtual methods, and non-trivial constructors/destructors -///You can enable BT_USE_MEMCPY, then swapping elements in the array will use memcpy instead of operator= -///see discussion here: http://continuousphysics.com/Bullet/phpBB2/viewtopic.php?t=1231 and -///http://www.continuousphysics.com/Bullet/phpBB2/viewtopic.php?t=1240 - -#define BT_USE_PLACEMENT_NEW 1 -//#define BT_USE_MEMCPY 1 //disable, because it is cumbersome to find out for each platform where memcpy is defined. It can be in <memory.h> or <string.h> or otherwise... - -#ifdef BT_USE_MEMCPY -#include <memory.h> -#include <string.h> -#endif //BT_USE_MEMCPY - -#ifdef BT_USE_PLACEMENT_NEW -#include <new> //for placement new -#endif //BT_USE_PLACEMENT_NEW - - -///The btAlignedObjectArray template class uses a subset of the stl::vector interface for its methods -///It is developed to replace stl::vector to avoid portability issues, including STL alignment issues to add SIMD/SSE data -template <typename T> -//template <class T> -class btAlignedObjectArray -{ - btAlignedAllocator<T , 16> m_allocator; - - int m_size; - int m_capacity; - T* m_data; - //PCK: added this line - bool m_ownsMemory; - - protected: - SIMD_FORCE_INLINE int allocSize(int size) - { - return (size ? size*2 : 1); - } - SIMD_FORCE_INLINE void copy(int start,int end, T* dest) const - { - int i; - for (i=start;i<end;++i) -#ifdef BT_USE_PLACEMENT_NEW - new (&dest[i]) T(m_data[i]); -#else - dest[i] = m_data[i]; -#endif //BT_USE_PLACEMENT_NEW - } - - SIMD_FORCE_INLINE void init() - { - //PCK: added this line - m_ownsMemory = true; - m_data = 0; - m_size = 0; - m_capacity = 0; - } - SIMD_FORCE_INLINE void destroy(int first,int last) - { - int i; - for (i=first; i<last;i++) - { - m_data[i].~T(); - } - } - - SIMD_FORCE_INLINE void* allocate(int size) - { - if (size) - return m_allocator.allocate(size); - return 0; - } - - SIMD_FORCE_INLINE void deallocate() - { - if(m_data) { - //PCK: enclosed the deallocation in this block - if (m_ownsMemory) - { - m_allocator.deallocate(m_data); - } - m_data = 0; - } - } - - - - - public: - - btAlignedObjectArray() - { - init(); - } - - ~btAlignedObjectArray() - { - clear(); - } - - ///Generally it is best to avoid using the copy constructor of an btAlignedObjectArray, and use a (const) reference to the array instead. - btAlignedObjectArray(const btAlignedObjectArray& otherArray) - { - init(); - - int otherSize = otherArray.size(); - resize (otherSize); - otherArray.copy(0, otherSize, m_data); - } - - - - /// return the number of elements in the array - SIMD_FORCE_INLINE int size() const - { - return m_size; - } - - SIMD_FORCE_INLINE const T& at(int n) const - { - return m_data[n]; - } - - SIMD_FORCE_INLINE T& at(int n) - { - return m_data[n]; - } - - SIMD_FORCE_INLINE const T& operator[](int n) const - { - return m_data[n]; - } - - SIMD_FORCE_INLINE T& operator[](int n) - { - return m_data[n]; - } - - - ///clear the array, deallocated memory. Generally it is better to use array.resize(0), to reduce performance overhead of run-time memory (de)allocations. - SIMD_FORCE_INLINE void clear() - { - destroy(0,size()); - - deallocate(); - - init(); - } - - SIMD_FORCE_INLINE void pop_back() - { - m_size--; - m_data[m_size].~T(); - } - - ///resize changes the number of elements in the array. If the new size is larger, the new elements will be constructed using the optional second argument. - ///when the new number of elements is smaller, the destructor will be called, but memory will not be freed, to reduce performance overhead of run-time memory (de)allocations. - SIMD_FORCE_INLINE void resize(int newsize, const T& fillData=T()) - { - int curSize = size(); - - if (newsize < curSize) - { - for(int i = newsize; i < curSize; i++) - { - m_data[i].~T(); - } - } else - { - if (newsize > size()) - { - reserve(newsize); - } -#ifdef BT_USE_PLACEMENT_NEW - for (int i=curSize;i<newsize;i++) - { - new ( &m_data[i]) T(fillData); - } -#endif //BT_USE_PLACEMENT_NEW - - } - - m_size = newsize; - } - - SIMD_FORCE_INLINE T& expandNonInitializing( ) - { - int sz = size(); - if( sz == capacity() ) - { - reserve( allocSize(size()) ); - } - m_size++; - - return m_data[sz]; - } - - - SIMD_FORCE_INLINE T& expand( const T& fillValue=T()) - { - int sz = size(); - if( sz == capacity() ) - { - reserve( allocSize(size()) ); - } - m_size++; -#ifdef BT_USE_PLACEMENT_NEW - new (&m_data[sz]) T(fillValue); //use the in-place new (not really allocating heap memory) -#endif - - return m_data[sz]; - } - - - SIMD_FORCE_INLINE void push_back(const T& _Val) - { - int sz = size(); - if( sz == capacity() ) - { - reserve( allocSize(size()) ); - } - -#ifdef BT_USE_PLACEMENT_NEW - new ( &m_data[m_size] ) T(_Val); -#else - m_data[size()] = _Val; -#endif //BT_USE_PLACEMENT_NEW - - m_size++; - } - - - /// return the pre-allocated (reserved) elements, this is at least as large as the total number of elements,see size() and reserve() - SIMD_FORCE_INLINE int capacity() const - { - return m_capacity; - } - - SIMD_FORCE_INLINE void reserve(int _Count) - { // determine new minimum length of allocated storage - if (capacity() < _Count) - { // not enough room, reallocate - T* s = (T*)allocate(_Count); - - copy(0, size(), s); - - destroy(0,size()); - - deallocate(); - - //PCK: added this line - m_ownsMemory = true; - - m_data = s; - - m_capacity = _Count; - - } - } - - - class less - { - public: - - bool operator() ( const T& a, const T& b ) - { - return ( a < b ); - } - }; - - template <typename L> - void quickSortInternal(L CompareFunc,int lo, int hi) - { - // lo is the lower index, hi is the upper index - // of the region of array a that is to be sorted - int i=lo, j=hi; - T x=m_data[(lo+hi)/2]; - - // partition - do - { - while (CompareFunc(m_data[i],x)) - i++; - while (CompareFunc(x,m_data[j])) - j--; - if (i<=j) - { - swap(i,j); - i++; j--; - } - } while (i<=j); - - // recursion - if (lo<j) - quickSortInternal( CompareFunc, lo, j); - if (i<hi) - quickSortInternal( CompareFunc, i, hi); - } - - - template <typename L> - void quickSort(L CompareFunc) - { - //don't sort 0 or 1 elements - if (size()>1) - { - quickSortInternal(CompareFunc,0,size()-1); - } - } - - - ///heap sort from http://www.csse.monash.edu.au/~lloyd/tildeAlgDS/Sort/Heap/ - template <typename L> - void downHeap(T *pArr, int k, int n,L CompareFunc) - { - /* PRE: a[k+1..N] is a heap */ - /* POST: a[k..N] is a heap */ - - T temp = pArr[k - 1]; - /* k has child(s) */ - while (k <= n/2) - { - int child = 2*k; - - if ((child < n) && CompareFunc(pArr[child - 1] , pArr[child])) - { - child++; - } - /* pick larger child */ - if (CompareFunc(temp , pArr[child - 1])) - { - /* move child up */ - pArr[k - 1] = pArr[child - 1]; - k = child; - } - else - { - break; - } - } - pArr[k - 1] = temp; - } /*downHeap*/ - - void swap(int index0,int index1) - { -#ifdef BT_USE_MEMCPY - char temp[sizeof(T)]; - memcpy(temp,&m_data[index0],sizeof(T)); - memcpy(&m_data[index0],&m_data[index1],sizeof(T)); - memcpy(&m_data[index1],temp,sizeof(T)); -#else - T temp = m_data[index0]; - m_data[index0] = m_data[index1]; - m_data[index1] = temp; -#endif //BT_USE_PLACEMENT_NEW - - } - - template <typename L> - void heapSort(L CompareFunc) - { - /* sort a[0..N-1], N.B. 0 to N-1 */ - int k; - int n = m_size; - for (k = n/2; k > 0; k--) - { - downHeap(m_data, k, n, CompareFunc); - } - - /* a[1..N] is now a heap */ - while ( n>=1 ) - { - swap(0,n-1); /* largest of a[0..n-1] */ - - - n = n - 1; - /* restore a[1..i-1] heap */ - downHeap(m_data, 1, n, CompareFunc); - } - } - - ///non-recursive binary search, assumes sorted array - int findBinarySearch(const T& key) const - { - int first = 0; - int last = size(); - - //assume sorted array - while (first <= last) { - int mid = (first + last) / 2; // compute mid point. - if (key > m_data[mid]) - first = mid + 1; // repeat search in top half. - else if (key < m_data[mid]) - last = mid - 1; // repeat search in bottom half. - else - return mid; // found it. return position ///// - } - return size(); // failed to find key - } - - - int findLinearSearch(const T& key) const - { - int index=size(); - int i; - - for (i=0;i<size();i++) - { - if (m_data[i] == key) - { - index = i; - break; - } - } - return index; - } - - void remove(const T& key) - { - - int findIndex = findLinearSearch(key); - if (findIndex<size()) - { - swap( findIndex,size()-1); - pop_back(); - } - } - - //PCK: whole function - void initializeFromBuffer(void *buffer, int size, int capacity) - { - clear(); - m_ownsMemory = false; - m_data = (T*)buffer; - m_size = size; - m_capacity = capacity; - } - -}; - -#endif //BT_OBJECT_ARRAY__ |