AtomicGameEngine/Source/AtomicGlow/ModelAOBake.h

#pragma once

#include <ToolCore/Import/ModelPacker.h>
#include "Raster.h"

using namespace Atomic;
using namespace ToolCore;

namespace Atomic
{
    class Image;
}

namespace AtomicGlow
{

class ModelAOBake : public Object
{
    ATOMIC_OBJECT(ModelAOBake, Object)

    public:

    ModelAOBake(Context* context);
    virtual ~ModelAOBake();

    bool LoadModel(const String& pathName);

private:

    void TraceAORays(unsigned nsample, float aoDepth = 4.0f, float multiply = 1.0f);

    // generate current LOD AO map
    bool GenerateLODLevelAOMap(MPLODLevel* lodLevel);

    struct ShaderData
    {
        ModelAOBake* bake_;
        Vector3 triPositions_[3];
        Vector3 triNormals_[3];
        Vector3 faceNormal_;
    };

    static bool FillLexelsCallback(void* param, int x, int y, const Vector3& barycentric,const Vector3& dx, const Vector3& dy, float coverage);

    bool GenerateLexels();

    //unsigned GetImageSize(float pixelsPerUnit, bool powerOfTwo);

    struct LMVertex
    {
        Vector3 position_;
        Vector3 normal_;
        Vector2 uv0_;
        Vector2 uv1_;
    };

    struct LMLexel
    {
        Vector3 position_;
        Vector3 normal_;
        Vector2 pixelCoord_;
        Color color_;
    };


    PODVector<LMVertex> lmVertices_;
    PODVector<LMLexel> lmLexels_;

    SharedArrayPtr<unsigned> indices_;

    unsigned numIndices_;

    SharedPtr<MPLODLevel> curLOD_;
    SharedPtr<ModelPacker> modelPacker_;

    SharedPtr<Image> lightmap_;

};

}