// EMERGENT GAME TECHNOLOGIES PROPRIETARY INFORMATION
//
// This software is supplied under the terms of a license agreement or
// nondisclosure agreement with Emergent Game Technologies and may not 
// be copied or disclosed except in accordance with the terms of that 
// agreement.
//
//      Copyright (c) 1996-2007 Emergent Game Technologies.
//      All Rights Reserved.
//
// Emergent Game Technologies, Chapel Hill, North Carolina 27517
// http://www.emergent.net

#ifndef NIDEFAULTSHADOWCLICKGENERATOR_H
#define NIDEFAULTSHADOWCLICKGENERATOR_H

#include "NiShadowClickGenerator.h"
#include "NiSingleShaderMaterial.h"

class NIMAIN_ENTRY NiDefaultShadowClickGenerator :
    public NiShadowClickGenerator
{
    NiDeclareRTTI;

public:
    NiDefaultShadowClickGenerator();
    virtual ~NiDefaultShadowClickGenerator();

    virtual bool GenerateRenderClicks(
        const NiTPointerList<NiShadowGeneratorPtr>& kGenerators);

    virtual void ReorganizeActiveShadowGenerators(
        NiTPointerList<NiShadowGeneratorPtr>& kActiveGenerators, 
        NiTPointerList<NiShadowGeneratorPtr>& kAllGenerators);

protected:

    virtual bool PrepareSpotLightShadowGenerator(
        NiShadowGenerator* pkGenerator);
    virtual bool PreparePointLightShadowGenerator(
        NiShadowGenerator* pkGenerator);
    virtual bool PrepareDirectionalLightShadowGenerator(
        NiShadowGenerator* pkGenerator);

    virtual bool HandleSpotLight(NiShadowGenerator* pkGenerator, 
        NiSpotLight* pkSpotLight, bool bRegenerateViews, 
        bool bUpdateShadowMaps);
    virtual bool HandlePointLight(NiShadowGenerator* pkGenerator, 
        NiPointLight* pkPointLight, bool bRegenerateViews,
        bool bUpdateShadowMaps);
    virtual bool HandleDirectionalLight(NiShadowGenerator* pkGenerator, 
        NiDirectionalLight* pkDirLight, bool bRegenerateViews,
        bool bUpdateShadowMaps);

    virtual NiShadowMap* ObtainAndAssignShadowMap(
        NiShadowGenerator* pkGenerator,unsigned int uiSMIndex, 
        NiGeometry* pkGeometry = NULL);
    virtual NiShadowCubeMap* ObtainAndAssignShadowCubeMap(
        NiShadowGenerator* pkGenerator,unsigned int uiSMIndex, 
        NiGeometry* pkGeometry = NULL);

    void UpdateDirLightFrustum(NiBound* pkBound, 
        NiShadowGenerator* pkGenerator, NiDirectionalLight* pkDirLight,
        float* pfNearClippingDist, float* pfFarClippingDist, 
        float* pfFrustumWidth, NiPoint3* pkPosition);

    NiTPrimitiveArray<float> m_kShadowGeneratorsDistSquared;
    NiTPrimitiveArray<NiShadowGenerator*> m_kSortedShadowGenerators;

    // Temporary list used to store the list of all the caster/receiver
    // geometry for a shadow generator.
    NiGeometryList m_kGeometryList;

    NiTMap <NiDirectionalLight*, float> m_kDirLightMap;

    NiFixedString kVSMTechniqueName;
};

NiSmartPointer(NiDefaultShadowClickGenerator);

#endif  // #ifndef NIDEFAULTSHADOWCLICKGENERATOR_H