/*
 * colour.cpp
 *
 *  Created on: Dec 16, 2012
 *      Author: gregor
 */

#include "GLTB/colour.h"

namespace gltb {
#ifdef USE_GLM
	glm::vec4 webColour(const std::string &colour) {
		static std::string hex("0123456789abcdef");
		glm::vec4 c;

		if((colour.length() == 6) || (colour.length() == 8)) {
			c.r = ((hex.find_first_of(colour.at(0)) << 4) + hex.find_first_of(colour.at(1))) / 255.0f;
			c.g = ((hex.find_first_of(colour.at(2)) << 4) + hex.find_first_of(colour.at(3))) / 255.0f;
			c.b = ((hex.find_first_of(colour.at(4)) << 4) + hex.find_first_of(colour.at(5))) / 255.0f;

			if(colour.length() == 8)
				c.a = ((hex.find_first_of(colour.at(6)) << 4) + hex.find_first_of(colour.at(7))) / 255.0f;
			else
				c.a = 1.0f;
		}
		else {
			c.r = 0;
			c.g = 0;
			c.b = 0;
			c.a = 0;
		}

		return c;
	}
#endif
}