#ifndef PIXEL_H_INCLUDED
#define PIXEL_H_INCLUDED

class Pixel
{
public:
    Pixel( double rval = 0.0, double gval = 0.0, double bval = 0.0 )
        : r( rval ), g( gval ), b( bval ) {}
    ~Pixel( void ) {}

    static Pixel black;
    static Pixel white;

    Pixel multiply( const Pixel &right ) const
    {
        return Pixel( r * right.r, g * right.g, b * right.b );
    }

    Pixel add( const Pixel &right ) const
    {
        return Pixel( r + right.r, g + right.g, b + right.b );
    }

    Pixel subtract( const Pixel &right ) const
    {
        return Pixel( r - right.r, g - right.g, b - right.b );
    }

    Pixel scalarMult( double val ) const
    {
        return Pixel( r * val, g * val, b * val );
    }

    double intensity( void ) const
    {
        return sqrt( ( r * r ) + ( g * g ) + ( b * b ) );
    }

    Pixel clamp( void ) const
    {
        return Pixel( r > 1.0 ? 1.0 : r, g > 1.0 ? 1.0 : g, b > 1.0 ? 1.0 : b );
    }

    double r;
    double g;
    double b;
};

#endif // PIXEL_H_INCLUDED