triangle.h

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#ifndef TRIANGLE_INCLUDED
#define TRIANGLE_INCLUDED
#include <Util/geometry.h>
#include <Util/polynomial.h>
#include "shape.h"
#include "scene.h"
 
namespace Ray
{
    class TriangleIndex
    {
        GLuint _indices[3];
 
    public:
        TriangleIndex( void ){ _indices[0] = _indices[1] = _indices[2] = 0; }
 
        TriangleIndex( unsigned int i0 , unsigned int i1 , unsigned int i2 ){ _indices[0] = i0 , _indices[1] = i1 , _indices[2] = i2; }
 
        GLuint& operator[] ( int idx )       { return _indices[idx]; }
 
        const GLuint &operator[] ( int idx ) const { return _indices[idx]; }
    };
 
    class Triangle : public Shape
    {
        size_t _vIndices[3];
 
        const class Vertex* _v[3];
 
    public:
        static std::string Directive( void ){ return "shape_triangle"; }
 
        Triangle( void );
 
        // Shape methods //
    private:
        void _write( std::ostream &stream ) const;
        void _read( std::istream &stream );
    public:
        std::string name( void ) const { return "triangle"; }
        void init( const class LocalSceneData &data );
        void initOpenGL( void );
        void updateBoundingBox( void );
        bool processFirstIntersection( const Util::Ray3D &ray , const Util::BoundingBox1D &range , const RayIntersectionFilter &rFilter , const RayIntersectionKernel &rKernel , ShapeProcessingInfo spInfo , unsigned int tIdx ) const;
        int processAllIntersections( const Util::Ray3D &ray , const Util::BoundingBox1D &range , const RayIntersectionFilter &rFilter , const RayIntersectionKernel &rKernel , ShapeProcessingInfo spInfo , unsigned int tIdx ) const;
        bool isInside( Util::Point3D p ) const;
        void addTrianglesOpenGL( std::vector< TriangleIndex >& triangles );
        void drawOpenGL( GLSLProgram * glslProgram ) const;
    };
}
#endif // TRIANGLE_INCLUDED