hkSkinningUtil.h
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- /*
- *
- * Confidential Information of Telekinesys Research Limited (t/a Havok). Not for disclosure or distribution without Havok's
- * prior written consent. This software contains code, techniques and know-how which is confidential and proprietary to Havok.
- * Level 2 and Level 3 source code contains trade secrets of Havok. Havok Software (C) Copyright 1999-2009 Telekinesys Research Limited t/a Havok. All Rights Reserved. Use of this software is subject to the terms of an end user license agreement.
- *
- */
- #ifndef HK_SKINNING_UTIL_H
- #define HK_SKINNING_UTIL_H
- #include <Common/GeometryUtilities/Mesh/hkMeshVertexBuffer.h>
- #include <Common/GeometryUtilities/Mesh/hkMeshSystem.h>
- /// Utility functions for skin meshes
- class hkSkinningUtil
- {
- public:
- struct Entry
- {
- hkReal m_distanceSquared; ///
- int m_index; ///
- };
- /// Works out the range of matrices indexed in a vertex buffer
- static hkResult HK_CALL findMatrixIndexRange(hkMeshVertexBuffer* buffer, int& minIndexOut, int& maxIndexOut);
- /// Find the matrix index range for a shape
- static hkResult HK_CALL findMatrixIndexRange(hkMeshShape* meshShape, int& minIndexOut, int& maxIndexOut);
- /// Works out the amount of bone indices are needed for a vertex format
- static int HK_CALL findNumBoneIndices(const hkVertexFormat& vertexFormat);
- /// Work out the distance based on spheres from the bones centers
- static void HK_CALL findDistances(const hkArray<hkVector4>& vertices, const hkArray<hkVector4>& boneCenter, int numDistances, hkReal maxDistance, hkArray<Entry>& entriesOut);
- /// Uses the position data in the vertex buffer as well as the bones info, to set up weights and bone indices
- static hkResult HK_CALL calculateBoneIndicesAndWeights(const hkArray<hkVector4>& boneCenters, hkMeshVertexBuffer* vertexBuffer, hkReal maxDistance);
- /// Remove the center of each of the bones (the pos part of the bones matrix)
- static void HK_CALL extractBoneCenters(const hkArray<hkMatrix4>& bones, hkArray<hkVector4>& boneCenters);
- /// Create a vertex buffer, which has the skinning information (still empty, use calculateBoneIndicesAndWeights() to set weights)
- static hkMeshVertexBuffer* HK_CALL createSkinnedVertexBuffer(hkMeshSystem* meshSystem, hkMeshVertexBuffer* srcVertexBuffer, int numWeights);
- /// If the srcVertexBuffer is already skinned it is returned with the ref count increased, else a new vertex buffer will be constructed with the srcVertexBuffers data
- /// and skinning elements (NOTE this elements will hold garbage, and need to be filled in for example using setSkinningValues)
- static hkMeshVertexBuffer* HK_CALL ensureSkinnedVertexBuffer(hkMeshSystem* meshSystem, hkMeshVertexBuffer* srcVertexBuffer, int numWeights);
- /// Creates a shape with skinned vertex buffers. If they are already skinned does nothing to that buffer. If all are skinned, will return shape, ref counted.
- static hkMeshShape* HK_CALL createEmptySkinnedShape(hkMeshSystem* meshSystem, const hkMeshShape* shape, int numWeights);
- /// Create a skinned shape
- static hkResult HK_CALL setSkinningValues(hkMeshShape* shape, const hkArray<hkVector4>& boneCenters, hkReal maxDistances);
- /// Set the skinning values
- static hkResult HK_CALL setSkinningValues(const hkArray<Entry>& entries, hkMeshVertexBuffer* vertexBuffer, hkReal maxDistance);
- /// Returns true if the format is a skinning format - ie has bones indices and weights of sub usage 0
- static hkBool HK_CALL isSkinnedVertexFormat(const hkVertexFormat& vertexFormat);
- /// Returns true if all of the vertex buffers associated with the shape have skinning information
- static hkBool HK_CALL isSkinnedShape(hkMeshShape* meshShape);
- };
- #endif // HK_SKINNING_UTIL_H
- /*
- * Havok SDK - NO SOURCE PC DOWNLOAD, BUILD(#20090216)
- *
- * Confidential Information of Havok. (C) Copyright 1999-2009
- * Telekinesys Research Limited t/a Havok. All Rights Reserved. The Havok
- * Logo, and the Havok buzzsaw logo are trademarks of Havok. Title, ownership
- * rights, and intellectual property rights in the Havok software remain in
- * Havok and/or its suppliers.
- *
- * Use of this software for evaluation purposes is subject to and indicates
- * acceptance of the End User licence Agreement for this product. A copy of
- * the license is included with this software and is also available at www.havok.com/tryhavok.
- *
- */