From ed047261f06f814eeb88a1f6ee2dd8abd7a14034 Mon Sep 17 00:00:00 2001 From: AndreaCatania Date: Tue, 1 Aug 2017 14:30:58 +0200 Subject: Vendor thirdparty Bullet source for upcoming physics server backend --- .../CollisionShapes/btStridingMeshInterface.h | 164 +++++++++++++++++++++ 1 file changed, 164 insertions(+) create mode 100644 thirdparty/bullet/src/BulletCollision/CollisionShapes/btStridingMeshInterface.h (limited to 'thirdparty/bullet/src/BulletCollision/CollisionShapes/btStridingMeshInterface.h') diff --git a/thirdparty/bullet/src/BulletCollision/CollisionShapes/btStridingMeshInterface.h b/thirdparty/bullet/src/BulletCollision/CollisionShapes/btStridingMeshInterface.h new file mode 100644 index 0000000000..9fbe139768 --- /dev/null +++ b/thirdparty/bullet/src/BulletCollision/CollisionShapes/btStridingMeshInterface.h @@ -0,0 +1,164 @@ +/* +Bullet Continuous Collision Detection and Physics Library +Copyright (c) 2003-2009 Erwin Coumans http://bulletphysics.org + +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_STRIDING_MESHINTERFACE_H +#define BT_STRIDING_MESHINTERFACE_H + +#include "LinearMath/btVector3.h" +#include "btTriangleCallback.h" +#include "btConcaveShape.h" + + + + + +/// The btStridingMeshInterface is the interface class for high performance generic access to triangle meshes, used in combination with btBvhTriangleMeshShape and some other collision shapes. +/// Using index striding of 3*sizeof(integer) it can use triangle arrays, using index striding of 1*sizeof(integer) it can handle triangle strips. +/// It allows for sharing graphics and collision meshes. Also it provides locking/unlocking of graphics meshes that are in gpu memory. +ATTRIBUTE_ALIGNED16(class ) btStridingMeshInterface +{ + protected: + + btVector3 m_scaling; + + public: + BT_DECLARE_ALIGNED_ALLOCATOR(); + + btStridingMeshInterface() :m_scaling(btScalar(1.),btScalar(1.),btScalar(1.)) + { + + } + + virtual ~btStridingMeshInterface(); + + + + virtual void InternalProcessAllTriangles(btInternalTriangleIndexCallback* callback,const btVector3& aabbMin,const btVector3& aabbMax) const; + + ///brute force method to calculate aabb + void calculateAabbBruteForce(btVector3& aabbMin,btVector3& aabbMax); + + /// get read and write access to a subpart of a triangle mesh + /// this subpart has a continuous array of vertices and indices + /// in this way the mesh can be handled as chunks of memory with striding + /// very similar to OpenGL vertexarray support + /// make a call to unLockVertexBase when the read and write access is finished + virtual void getLockedVertexIndexBase(unsigned char **vertexbase, int& numverts,PHY_ScalarType& type, int& stride,unsigned char **indexbase,int & indexstride,int& numfaces,PHY_ScalarType& indicestype,int subpart=0)=0; + + virtual void getLockedReadOnlyVertexIndexBase(const unsigned char **vertexbase, int& numverts,PHY_ScalarType& type, int& stride,const unsigned char **indexbase,int & indexstride,int& numfaces,PHY_ScalarType& indicestype,int subpart=0) const=0; + + /// unLockVertexBase finishes the access to a subpart of the triangle mesh + /// make a call to unLockVertexBase when the read and write access (using getLockedVertexIndexBase) is finished + virtual void unLockVertexBase(int subpart)=0; + + virtual void unLockReadOnlyVertexBase(int subpart) const=0; + + + /// getNumSubParts returns the number of seperate subparts + /// each subpart has a continuous array of vertices and indices + virtual int getNumSubParts() const=0; + + virtual void preallocateVertices(int numverts)=0; + virtual void preallocateIndices(int numindices)=0; + + virtual bool hasPremadeAabb() const { return false; } + virtual void setPremadeAabb(const btVector3& aabbMin, const btVector3& aabbMax ) const + { + (void) aabbMin; + (void) aabbMax; + } + virtual void getPremadeAabb(btVector3* aabbMin, btVector3* aabbMax ) const + { + (void) aabbMin; + (void) aabbMax; + } + + const btVector3& getScaling() const { + return m_scaling; + } + void setScaling(const btVector3& scaling) + { + m_scaling = scaling; + } + + virtual int calculateSerializeBufferSize() const; + + ///fills the dataBuffer and returns the struct name (and 0 on failure) + virtual const char* serialize(void* dataBuffer, btSerializer* serializer) const; + + +}; + +struct btIntIndexData +{ + int m_value; +}; + +struct btShortIntIndexData +{ + short m_value; + char m_pad[2]; +}; + +struct btShortIntIndexTripletData +{ + short m_values[3]; + char m_pad[2]; +}; + +struct btCharIndexTripletData +{ + unsigned char m_values[3]; + char m_pad; +}; + + +///do not change those serialization structures, it requires an updated sBulletDNAstr/sBulletDNAstr64 +struct btMeshPartData +{ + btVector3FloatData *m_vertices3f; + btVector3DoubleData *m_vertices3d; + + btIntIndexData *m_indices32; + btShortIntIndexTripletData *m_3indices16; + btCharIndexTripletData *m_3indices8; + + btShortIntIndexData *m_indices16;//backwards compatibility + + int m_numTriangles;//length of m_indices = m_numTriangles + int m_numVertices; +}; + + +///do not change those serialization structures, it requires an updated sBulletDNAstr/sBulletDNAstr64 +struct btStridingMeshInterfaceData +{ + btMeshPartData *m_meshPartsPtr; + btVector3FloatData m_scaling; + int m_numMeshParts; + char m_padding[4]; +}; + + + + +SIMD_FORCE_INLINE int btStridingMeshInterface::calculateSerializeBufferSize() const +{ + return sizeof(btStridingMeshInterfaceData); +} + + + +#endif //BT_STRIDING_MESHINTERFACE_H -- cgit v1.2.3