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