123

ResourceCompilerPC/CrySkinRigidBasis.h

@@ -0,0 +1,72 @@
+#ifndef _CRY_ANIMATION_CRY_SKIN_RIGID_BASIS_HDR_
+#define _CRY_ANIMATION_CRY_SKIN_RIGID_BASIS_HDR_
+
+#include "CrySkinBase.h"
+
+
+//////////////////////////////////////////////////////////////////////////
+// This is the skin that calculates the tangent bases
+// the skin is assumed to be rigid.
+// The basises can be flipped, but may not be non-normalized or non-orthogonal
+//
+// IMPLEMENTATION NOTES:
+//  each base is represented by the first 2 vectors in the vertex array.
+//  the 3rd one is the cross-product, optionally negated with the 0x80000000
+//  flag in the 2nd vertex's nDest field. The 1st vertex contains the destination
+//  vertex index itself
+class CrySkinRigidBasis: public CrySkinBase
+{
+public:
+	// returns the size of the skin, the number of bases being calculated
+	// by this skin. The bases are calculated into a 0-base continuous array
+	// tangents may be divided into subskins, each having different number of bases
+	// to skin, based on the performance consideration (strip mining)
+	unsigned size()const;
+
+	// does the skinning out of the given array of global matrices:
+	// calculates the bases and fills the PipVertices in
+	void skin (const Matrix44* pBones, SPipTangentsA* pDest)const;
+#if defined(_CPU_X86) && !defined(LINUX)
+	// uses SSE for skinning; NOTE: EVERYTHING must be 16-aligned:
+	// destination, bones, and the data in this object
+	void skinSSE (const Matrix44* pBones, SPipTangentsA* pDest)const;
+#endif
+	friend class CrySkinBasisBuilder;
+
+	// does the same as the base class init() but also remembers the number of bases (numVerts/2)
+	// for future reference
+	void init (unsigned numVerts, unsigned numAux, unsigned numSkipBones, unsigned numBones);
+
+	// returns the number of bytes occupied by this structure and all its contained objects
+	unsigned sizeofThis()const;
+
+	friend class CStatistics;
+	// this structure contains the statistical information about this skin; its calculation
+	// may take significant time and should not be used in game run time (only for debugging purposes
+	// and to output statistics in the tools)
+	class CStatistics: public CrySkinBase::CStatistics
+	{
+	public:
+		CStatistics (const CrySkinRigidBasis* pSkin):
+			CrySkinBase::CStatistics(pSkin)
+		{
+			initSetDests (pSkin);
+		}
+
+		void initSetDests (const CrySkinRigidBasis* pSkin);
+		void addDest(unsigned nDest);
+
+		// destination vertex set
+		std::set<unsigned> setDests;
+		// the number of links per each vertex
+		std::vector<unsigned> arrNumLinks;
+	};
+
+	unsigned Serialize (bool bSave, void* pBuffer, unsigned nBufSize);
+protected:
+	// The size of the skin, the number of bases being calculated
+	// by this skin. The bases are calculated into a 0-base continuous array
+	unsigned m_numDestBases;
+};
+
+#endif