/*

     File: GLUVertices.h

 Abstract: 

 OpenGL vertices representation private types.

  Version: 1.2

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// MacOS X

#ifndef _GL_UTILITIES_VERTICES_H_

#define _GL_UTILITIES_VERTICES_H_

// STL container types

#import <vector>

// OpenGL Mac OS X

#import <OpenGL/OpenGL.h>

// SIMD Math OS X

#import <simd/simd.h>

#ifdef __cplusplus

namespace GLU

{

    // Vertex 2D class

    struct Vertex2D

    {

        vector_float2 m_Positions;

        vector_float2 m_Texcoords;

        vector_float4 m_Colors;

    }; // GLVertex2D

    typedef struct GLVertex2D GLVertex2D;

    // Vertex 3D class with positions, texture coordinates,

    // and colors

    struct Vertex3D_1

    {

        vector_float3 m_Positions;

        vector_float3 m_Texcoords;

        vector_float4 m_Colors;

    }; // GLVertex3D_1

    typedef struct GLVertex3D_1 GLVertex3D_1;

    // Vertex 3D class with positions, normals, texture coordinates,

    // and colors

    struct Vertex3D_2

    {

        vector_float3 m_Positions;

        vector_float3 m_Normals;

        vector_float3 m_Texcoords;

        vector_float4 m_Colors;

    }; // GLVertex3D

    typedef struct GLVertex3D_2 GLVertex3D_2;

    // Vertex 3D class with positions, texture coordinates, colors,

    // and with/without normals

    union Vertex3D

    {

        Vertex3D_1  m_v3D_1;

        Vertex3D_2  m_v3D_2;

    }; // GLVertex3D

    typedef union Vertex3D Vertex3D;

    // 2D or 3D vertex representation

    class Vertex

    {

    public:

        // 2D vertex constructor

        Vertex(vector_float2 const & rPositions,

               vector_float2 const & rTexcoords,

               vector_float4 const & rColors)

        {

            m_Vertex2D.m_Positions = rPositions;

            m_Vertex2D.m_Texcoords = rTexcoords;

            m_Vertex2D.m_Colors    = rColors;

        } // constructor

        // 3D vertex constructor without normals

        Vertex(vector_float3 const & rPositions,

               vector_float3 const & rTexcoords,

               vector_float4 const & rColors)

        {

            m_Vertex3D.m_v3D_1.m_Positions = rPositions;

            m_Vertex3D.m_v3D_1.m_Texcoords = rTexcoords;

            m_Vertex3D.m_v3D_1.m_Colors    = rColors;

        } // constructor

        // 3D vertex constructor with normals

        Vertex(vector_float3 const & rPositions,

               vector_float3 const & rNormals,

               vector_float3 const & rTexcoords,

               vector_float4 const & rColors)

        {

            m_Vertex3D.m_v3D_2.m_Positions = rPositions;

            m_Vertex3D.m_v3D_2.m_Normals   = rNormals;

            m_Vertex3D.m_v3D_2.m_Texcoords = rTexcoords;

            m_Vertex3D.m_v3D_2.m_Colors    = rColors;

        } // constructor

        union

        {

            Vertex2D m_Vertex2D;

            Vertex3D m_Vertex3D;

        }; // anonymous union

    }; // Vertex

    // Interleaved array, with either 2D or 3D vertices

    struct Array

    {

        GLuint mnDim;

        GLuint mnCount[4];

        std::vector<Vertex>  m_Vertices;

    }; // Array

    typedef struct Array Array;

} // GLU

#endif

#endif