//
//  Tonemapper.hpp
//  AwesomeAttractorND
//
//  Created by Joshua Moerman on 10/28/11.
//  Copyright 2011 Vadovas. All rights reserved.
//

#ifndef AwesomeAttractorND_Tonemapper_hpp
#define AwesomeAttractorND_Tonemapper_hpp

#include <algorithm>

namespace Tonemappers {
	
	class Normalizer2D {
		unsigned int max;
		
		template <typename C>
		void analyse(C const & canvas){
			max = *std::max_element(canvas.cbegin(), canvas.cend());
		}
		
		template <typename C, typename I>
		void process(C const & canvas, I & image){
			for (size_t x = 0; x < canvas.get_size(0); ++x) {
				for (size_t y = 0; y < canvas.get_size(1); ++y) {
					const double grayscale = (double) canvas[x][y] / (double) max;
					image << I::pixel(grayscale, grayscale, grayscale);
				}
			}
		}
	};

}

#endif