color.h

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#ifndef _COLOR_H
#define _COLOR_H
 
 
 
 
struct Color
{
    Color( ) : r(0.f), g(0.f), b(0.f), a(1.f) {}
    explicit Color( const float _r, const float _g, const float _b, const float _a= 1.f ) : r(_r), g(_g), b(_b), a(_a) {}
    explicit Color( const float _value ) : r(_value), g(_value), b(_value), a(1.f) {}
    
    Color( const Color& color, const float alpha ) : r(color.r), g(color.g), b(color.b), a(alpha) {}  // remplace alpha.
    
    float power( ) const;
    float max( ) const;
    
    float r, g, b, a;
};
 
Color Black( );
Color White( );
Color Red( );
Color Green( );
Color Blue( );
Color Yellow( );
 
Color operator+ ( const Color& a, const Color& b );
Color operator- ( const Color& a, const Color& b );
Color operator- ( const Color& c );
Color operator* ( const Color& a, const Color& b );
Color operator* ( const Color& c, const float k );
Color operator* ( const float k, const Color& c );
Color operator/ ( const Color& a, const Color& b );
Color operator/ ( const float k, const Color& c );
Color operator/ ( const Color& c, const float k );
 
Color linear( const Color& color );
 
Color gamma( const Color& color );
 
#endif