CWE-ou-minkata/Sources/Plasma/PubUtilLib/plGRenderProcs/hsSfxGlobalShade.h

/*==LICENSE==*

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*==LICENSE==*/


#ifndef hsSfxGlobalShade_inc
#define hsSfxGlobalShade_inc

#include "hsBiExpander.h"
#include "hsGRenderProcs.h"
#include "hsColorRGBA.h"
#include "hsGeometry3.h"

class hsGLayer;

class hsSfxGlobalShade : public hsGRenderProcs {
public:
    enum {
        kNone               = 0x0,
        kFromFog            = 0x1,
        kFromClear          = 0x2,
        kFromLights         = 0x4,
        kSourceMask         = kFromFog | kFromClear | kFromLights,
        kScalarIntensity    = 0x8,
        kAffectDiffuse      = 0x10
    };
protected:

    // Constants from which to work.
    UInt32                  fGSFlags;

    hsColorRGBA             fAmbient;
    hsColorRGBA             fDiffuse;

    // Calculated each invocation.
    hsColorRGBA             fIntensity;
    
    hsGLayer*               fCurrentLayer;
    hsColorRGBA             fRestoreColor;

    void                    ISetIntensity(hsPoint3& pos);
    void                    ISetFromFog(hsPoint3& pos);
    void                    ISetFromClear(hsPoint3& pos);
    void                    ISetFromLights(hsPoint3& pos);
    hsColorRGBA             ISumLights(hsPoint3& pos);
public:
    hsSfxGlobalShade();
    virtual ~hsSfxGlobalShade();

    virtual void ProcessPreInterpShadeVerts(hsExpander<hsGShadeVertex*>& vList);

    virtual hsBool32 BeginObject(plPipeline* pipe, plDrawable* obj);
    virtual void EndObject();

    virtual void Read(hsStream* s);
    virtual void Write(hsStream* s);

    virtual const char* GetLabel() const { return "hsSfxGlobalShade"; }

    virtual ProcType GetType() const { return kTypeGlobalShade; }

    void SetAmbient(const hsColorRGBA& col) { fAmbient = col; }
    hsColorRGBA GetAmbient() const { return fAmbient; }

    void SetDiffuse(const hsColorRGBA& col) { fDiffuse = col; }
    hsColorRGBA GetDiffuse() const { return fDiffuse; }

    void SetSource(UInt32 f) { fGSFlags &= ~kSourceMask; fGSFlags |= f; }
    UInt32 GetSource() { return fGSFlags & kSourceMask; }

    void SetScalar(hsBool32 on) { if(on)fGSFlags |= kScalarIntensity; else fGSFlags &= ~kScalarIntensity; }
    hsBool32 GetScalar() { return 0 != (fGSFlags & kScalarIntensity); }

    void SetAffectDiffuse(hsBool32 on) { if(on)fGSFlags |= kAffectDiffuse; else fGSFlags &= ~kAffectDiffuse; }
    hsBool32 GetAffectDiffuse() { return 0 != (fGSFlags & kAffectDiffuse); }

    CLASSNAME_REGISTER( hsSfxGlobalShade );
    GETINTERFACE_ANY( hsSfxGlobalShade, hsGRenderProcs );

};

#endif // hsSfxGlobalShade_inc