/* $Id: color.cpp,v 1.3 2005/06/28 13:55:18 chfreund Exp $ */

/******************************************************************************/

#include "color.hpp"

/******************************************************************************/

Uint32 Color::HSVToUint32( const real h, const real s, const real v ) {
	const real h2 = (h - (int)( h )) * 6.0;
	const int   l = (int) h2;
	const real f = h2 - l,
	            m = v*(1.0-s),
	            n = v*(1.0-(s*f)),
	            i = v*(1.0-(s*(1.0-f)));

	Uint32 color;
	
	switch (l) {
		case 0:
			color = ((((Uint8) (255.0*v) << 8) | (Uint8) (255.0*i)) << 8) | (Uint8) (255.0*m);
			break;
		case 1:
			color = ((((Uint8) (255.0*n) << 8) | (Uint8) (255.0*v)) << 8) | (Uint8) (255.0*m);
			break;
		case 2:
			color = ((((Uint8) (255.0*m) << 8) | (Uint8) (255.0*v)) << 8) | (Uint8) (255.0*i);
			break;
		case 3:
			color = ((((Uint8) (255.0*m) << 8) | (Uint8) (255.0*n)) << 8) | (Uint8) (255.0*v);
			break;
		case 4:
			color = ((((Uint8) (255.0*i) << 8) | (Uint8) (255.0*m)) << 8) | (Uint8) (255.0*v);
			break;
		default:
			color = ((((Uint8) (255.0*v) << 8) | (Uint8) (255.0*m)) << 8) | (Uint8) (255.0*n);
			break;
	}
	return color;
}

/******************************************************************************/