Vertex.h

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/*
 *  Copyright (C) 2021 Leonid Kostrykin
 *
 */

#ifndef VERTEX_H_6014714286
#define VERTEX_H_6014714286

#include <Carna/Carna.h>
#include <Carna/base/VertexAttributes.h>

namespace Carna
{

namespace base
{



// ----------------------------------------------------------------------------------
// VertexPosition
// ----------------------------------------------------------------------------------

struct VertexPosition
{
    float x, y, z, w;

    VertexPosition();

    template< typename VectorType >
    void setPosition( const VectorType& position );
};


template< typename VectorType >
void VertexPosition::setPosition( const VectorType& position )
{
    x = position.x();
    y = position.y();
    z = position.z();
}



// ----------------------------------------------------------------------------------
// VertexNormal
// ----------------------------------------------------------------------------------

struct VertexNormal
{
    float nx, ny, nz, nw;

    VertexNormal();

    template< typename VectorType >
    void setNormal( const VectorType& normal );
};


template< typename VectorType >
void VertexNormal::setNormal( const VectorType& normal )
{
    nx = normal.x();
    ny = normal.y();
    nz = normal.z();
}



// ----------------------------------------------------------------------------------
// VertexColor
// ----------------------------------------------------------------------------------

struct VertexColor
{
    float r, g, b, a;

    VertexColor();

    template< typename VectorType >
    void setColor( const VectorType& color );
};


template< typename VectorType >
void VertexColor::setColor( const VectorType& color )
{
    r = color.x();
    g = color.y();
    b = color.z();
    a = color.w();
}



// ----------------------------------------------------------------------------------
// VERTEX_NULL_COMPONENT
// ----------------------------------------------------------------------------------

#define VERTEX_NULL_COMPONENT( name ) \
    template< typename VectorType > \
    void set ## name( const VectorType& ) \
    { \
    }



// ----------------------------------------------------------------------------------
// PVertex
// ----------------------------------------------------------------------------------

struct CARNA_LIB PVertex
    : public VertexPosition
{
    static const VertexAttributes attributes;

    VERTEX_NULL_COMPONENT( Normal );

    VERTEX_NULL_COMPONENT( Color  );
};



// ----------------------------------------------------------------------------------
// PNVertex
// ----------------------------------------------------------------------------------

struct CARNA_LIB PNVertex
    : public VertexPosition
    , public VertexNormal
{
    static const VertexAttributes attributes;

    VERTEX_NULL_COMPONENT( Color );
};



// ----------------------------------------------------------------------------------
// PCVertex
// ----------------------------------------------------------------------------------

struct CARNA_LIB PCVertex
    : public VertexPosition
    , public VertexColor
{
    static const VertexAttributes attributes;

    VERTEX_NULL_COMPONENT( Normal );
};



}  // namespace Carna :: base

}  // namespace Carna

#endif // VERTEX_H_6014714286