CWE-ou-minkata/Sources/Plasma/PubUtilLib/plDrawable/plAccessTriSpan.h

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*==LICENSE==*/

#ifndef plAccessTriSpan_inc
#define plAccessTriSpan_inc

#include "plAccessVtxSpan.h"

class plAccessTriSpan : public plAccessVtxSpan
{
public:
	hsGDeviceRef*	fIdxDeviceRef;

	UInt16*			fTris; // array length fNumTris*3
	
	UInt32			fNumTris;

	void			ClearTris() { fTris = nil; fNumTris = 0; }

	UInt32			TriCount() const { return fNumTris; }

	void			SetIdxDeviceRef(hsGDeviceRef* ref) { fIdxDeviceRef = ref; }
	hsGDeviceRef*	GetIdxDeviceRef() const { return fIdxDeviceRef; }
};

class plAccTriIterator
{
protected:

	UInt16*					fCurrIdx;
	UInt16*					fEndIdx;

	plAccessTriSpan*		fAccess;
public:
	plAccTriIterator() { Set(nil); }
	plAccTriIterator(plAccessTriSpan* acc) { Set(acc); }

	void			Set(plAccessTriSpan* acc) { fAccess = acc; fCurrIdx = nil; }

	void			Begin();
	void			Advance();
	void			SetTri(int i);
	hsBool			More() const;

	UInt32			NumTris() const { return fAccess->fNumTris; }

	UInt16&			RawIndex(int iVtx) const { return fCurrIdx[iVtx]; }

	hsPoint3&		Position(int iVtx) const { return fAccess->PositionOff(fCurrIdx[iVtx]); }
	hsVector3&		Normal(int iVtx) const { return fAccess->NormalOff(fCurrIdx[iVtx]); }
	UInt32			Diffuse32(int iVtx) const { return fAccess->Diffuse32Off(fCurrIdx[iVtx]); }
	UInt32			Specular32(int iVtx) const { return fAccess->Specular32Off(fCurrIdx[iVtx]); }
	hsColorRGBA		DiffuseRGBA(int iVtx) const { return fAccess->DiffuseRGBAOff(fCurrIdx[iVtx]); }
	hsColorRGBA		SpecularRGBA(int iVtx) const { return fAccess->SpecularRGBAOff(fCurrIdx[iVtx]); }
	hsPoint3*		UVWs(int iVtx) const { return fAccess->UVWsOff(fCurrIdx[iVtx]); }
	hsPoint3&		UVW(int iVtx, int iUVW) const { return fAccess->UVWOff(fCurrIdx[iVtx], iUVW); }

	hsPoint3		InterpPosition(const hsPoint3& bary) const;
	hsVector3		InterpNormal(const hsPoint3& bary) const;
	UInt32			InterpDiffuse32(const hsPoint3& bary) const;
	UInt32			InterpSpecular32(const hsPoint3& bary) const;
	hsColorRGBA		InterpDiffuseRGBA(const hsPoint3& bary) const;
	hsColorRGBA		InterpSpecularRGBA(const hsPoint3& bary) const;
	hsPoint3		InterpUVW(const hsPoint3& bary, int i) const;


};

inline void plAccTriIterator::Begin()
{
	fCurrIdx = fAccess->fTris;
	fEndIdx = fCurrIdx + fAccess->fNumTris*3;
}

inline void plAccTriIterator::Advance()
{
	fCurrIdx += 3;
}

inline void plAccTriIterator::SetTri(int i)
{
	fCurrIdx = fAccess->fTris + i * 3;
}

inline hsBool plAccTriIterator::More() const
{
	return fCurrIdx < fEndIdx;
}

inline hsPoint3 plAccTriIterator::InterpPosition(const hsPoint3& bary) const
{
	return Position(0) * bary[0]
		+ Position(1) * bary[1]
		+ Position(2) * bary[2];
}

inline hsVector3 plAccTriIterator::InterpNormal(const hsPoint3& bary) const
{
	return Normal(0) * bary[0]
		+ Normal(1) * bary[1]
		+ Normal(2) * bary[2];
}

inline hsColorRGBA plAccTriIterator::InterpDiffuseRGBA(const hsPoint3& bary) const
{
	return DiffuseRGBA(0) * bary[0]
				+ DiffuseRGBA(1) * bary[1]
				+ DiffuseRGBA(2) * bary[2];
}

inline hsColorRGBA plAccTriIterator::InterpSpecularRGBA(const hsPoint3& bary) const
{
	return SpecularRGBA(0) * bary[0]
				+ SpecularRGBA(1) * bary[1]
				+ SpecularRGBA(2) * bary[2];
}

inline UInt32 plAccTriIterator::InterpDiffuse32(const hsPoint3& bary) const
{
	return InterpDiffuseRGBA(bary).ToARGB32();
}

inline UInt32 plAccTriIterator::InterpSpecular32(const hsPoint3& bary) const
{
	return InterpSpecularRGBA(bary).ToARGB32();
}

inline hsPoint3 plAccTriIterator::InterpUVW(const hsPoint3& bary, int i) const
{
	return UVW(0, i) * bary[0]
		+ UVW(1, i) * bary[1]
		+ UVW(2, i) * bary[2];
}

#endif // plAccessTriSpan_inc