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CryAnimation/CrySkinBasisBuilder.h

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+#ifndef _CRY_ANIMATION_CRY_SKIN_BASIS_BUILDER_HDR_
+#define _CRY_ANIMATION_CRY_SKIN_BASIS_BUILDER_HDR_
+
+#include "CrySkinBuilderBase.h"
+
+class CrySkinBasisBuilder: public CrySkinBuilderBase0
+{
+public:
+	CrySkinBasisBuilder (const ICrySkinSource* pGeometry, const Matrix44* pMatInvDef, unsigned numBones);
+
+	// sets the destination vertex interval to operate on. Initially, this is infinity.
+	// The destination vertex interval is the interval within which the destination vertex
+	// index must lie in order to be skinned. The base of the interval is considered
+	// vertex 0 in the produced skinner
+	void setDestinationInterval (unsigned nBegin, unsigned nEnd);
+
+	// initializes the given rigid basis builder
+	void initRigidBasisSkin (class CrySkinRigidBasis* pSkin);
+protected:
+
+	// calculate the number of used bones and the skip-bone
+	void preprocess();
+
+	// makes up the basis array
+	void makeBoneBases ();
+
+	// fills the given bases to the simple stream
+	typedef std::vector< CrySkinRigidBaseInfo > CrySkinRigidBasisArray;
+  void fillGroup (CrySkinStreams& stream, const CrySkinRigidBasisArray& arrBases);
+protected:
+	// the bone info, from which we'll extract the default position
+	const Matrix44* m_pMatInvDef;
+	unsigned m_numBoneInfos;
+
+	// this structure describes the flipped and unflipped bases belonging to the bone
+	struct BoneBasisGroup
+	{
+		CrySkinRigidBasisArray arrRight;// unflipped, Normal  = Tang ^ Binorm
+		CrySkinRigidBasisArray arrLeft; // flipped, Normal = Binorm ^ Tang
+		void reserve (unsigned numReserve)
+		{
+			arrRight.reserve (numReserve/2);
+			arrLeft.reserve (numReserve/2);
+		}
+	};
+	typedef std::vector<BoneBasisGroup> BoneBasisGroupArray;
+	BoneBasisGroupArray m_arrBoneBases;
+
+	// total number of bones used (max bone + 1)
+	unsigned m_numBones;
+	unsigned m_nFirstBone;
+
+	// the destination interval: if the destination vertex is within this interval,
+	// it is put into the skinner; the actual destination vertex index is dubtracted the interval begin
+	unsigned m_nDestIntervalBegin, m_nDestIntervalEnd;
+
+	/*
+	unsigned m_nFlags;
+	
+	enum
+	{
+		flagForSSE = 1// if this is set, then the skin is constructed for SSE usage
+	}
+	*/
+};
+
+#endif