kicad/3d-viewer/3d_rendering/3d_render_raytracing/shapes2D/ctriangle2d.h

/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2015-2016 Mario Luzeiro <mrluzeiro@ua.pt>
 * Copyright (C) 1992-2020 KiCad Developers, see AUTHORS.txt for contributors.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, you may find one here:
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * or you may search the http://www.gnu.org website for the version 2 license,
 * or you may write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
 */

/**
 * @file  ctriangle2d.h
 * @brief
 */

#ifndef _CTRIANGLE2D_H_
#define _CTRIANGLE2D_H_

#include "cobject2d.h"
#include "../accelerators/ccontainer2d.h"
#include <geometry/shape_line_chain.h>
#include <geometry/shape_poly_set.h>
#include <clipper.hpp>

class  CTRIANGLE2D : public COBJECT2D
{
public:
    CTRIANGLE2D ( const SFVEC2F &aV1,
                  const SFVEC2F &aV2,
                  const SFVEC2F &aV3,
                  const BOARD_ITEM &aBoardItem );

    const SFVEC2F &GetP1() const { return p1; }
    const SFVEC2F &GetP2() const { return p2; }
    const SFVEC2F &GetP3() const { return p3; }

    // Imported from COBJECT2D
    bool Overlaps( const CBBOX2D &aBBox ) const override;
    bool Intersects( const CBBOX2D &aBBox ) const override;
    bool Intersect( const RAYSEG2D &aSegRay, float *aOutT, SFVEC2F *aNormalOut ) const override;
    INTERSECTION_RESULT IsBBoxInside( const CBBOX2D &aBBox ) const override;
    bool IsPointInside( const SFVEC2F &aPoint ) const override;

private:
    SFVEC2F p1;
    SFVEC2F p2;
    SFVEC2F p3;

    float m_inv_denominator;
    float m_p2y_minus_p3y;
    float m_p3x_minus_p2x;
    float m_p3y_minus_p1y;
    float m_p1x_minus_p3x;
};


void Convert_shape_line_polygon_to_triangles(  SHAPE_POLY_SET &aPolyList,
                                               CGENERICCONTAINER2D &aDstContainer,
                                               float aBiuTo3DunitsScale,
                                               const BOARD_ITEM &aBoardItem );
#endif // _CTRIANGLE2D_H_