triangleintersector.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/base/memory.h"
#include "gwnavruntime/math/vec3f.h"

namespace Kaim
{

/*
class TriangleIntersector
*/
class TriangleIntersector
{
    KY_DEFINE_NEW_DELETE_OPERATORS(MemStat_Query)

public:
    TriangleIntersector(const Vec3f& a, const Vec3f& b, const Vec3f& c, KyFloat32 integerPrecision)
    {
        m_a = a;
        m_b = b;
        m_c = c;
        m_integerPrecision = integerPrecision;
    }

    bool DoesIntersectEdge(const CoordPos64& startEdgeCoordPos, const CoordPos64& endEdgeCoordPos)
    {
        const Vec3f startEdgePos(startEdgeCoordPos.x * m_integerPrecision, startEdgeCoordPos.y * m_integerPrecision, 0.f);
        const Vec3f endEdgePos(endEdgeCoordPos.x * m_integerPrecision, endEdgeCoordPos.y * m_integerPrecision, 0.f);

        return Math::IsSegmentVsTriangle2f(startEdgePos, endEdgePos, m_a, m_b, m_c);
    }

private:
    Vec3f m_a;
    Vec3f m_b;
    Vec3f m_c;
    KyFloat32 m_integerPrecision;
};


}