trianglerasterizer.h

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/*
* Copyright 2016 Autodesk, Inc. All rights reserved.
* Use of this software is subject to the terms of the Autodesk license agreement and any attachments or Appendices thereto provided at the time of installation or download,
* or which otherwise accompanies this software in either electronic or hard copy form, or which is signed by you and accepted by Autodesk.
*/





#pragma once


#include "gwnavruntime/navmesh/navmeshtypes.h"
#include "gwnavgeneration/raster/rastertriangle.h"


namespace Kaim
{

class Triangle3i;
class GeneratorSystem;
class RasterPoint;
class SingleStageRaster;


class TriangleRasterizer
{
    KY_DEFINE_NEW_DELETE_OPERATORS(Stat_Default_Mem)
public:
    TriangleRasterizer(GeneratorSystem* sys) : m_sys(sys), m_singleStageRaster(nullptr){}

    void Init(KyFloat32 pixelSizeInMeters, KyInt32 intPixelSize, SingleStageRaster* singleStageRaster);

    void RasterizeTriangle(const Triangle3i& triangle3i, KyUInt32 navTagIdx);

    KyFloat32 GetRasterPrecision() const { return m_rasterPrecision; }

private:
    void RasterizePoint(const RasterPoint& M);
    void RasterizeInterior();
    void WriteLine(Coord min_x, Coord max_x, Coord y);
    void WriteSinglePixelLine(Coord min_x, Coord max_x, PixelCoord py, Coord y);
    void WriteDoublePixelLine(Coord min_x, Coord max_x, Coord y);
    void FlagLineEnds();

private:
    GeneratorSystem* m_sys;
    KyInt32 m_intPixelSize;
    KyFloat32 m_rasterPrecision;
    SingleStageRaster* m_singleStageRaster;
    RasterTriangle m_triangle;
    CoordBox m_rasterCoordBox;
};


}