assets.cpp
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			#include "assets.h"

			using namespace symkit;

			#include <cmath>

			//fonction qui gère la coloration d'un objet selon sa vitesse
			color_s beta::colorGradientFunction(double energy, double limit)
			{
			/* Values in zero */
			color_s color = {1.0f / 32, 1.0f / 16, 1.0f, 1.0f};
			double ratio = energy / limit;

			if (ratio < 1)
			{
			color.red = pow(2, -5 * pow(ratio - 1, 2));

			double lambda = (ratio <= 1.0f / 3) ? -36 : - 45.0 / 4;

			color.green = pow(2, lambda * pow(ratio - 1.0f / 3, 2));

			if (ratio <= 0.5f)
			color.blue = pow(2, -20 * pow(ratio, 2));
			else
			color.blue = 1.0f / 32;

			} else {

			color.red = 1;
			color.green = 1.0f / 32;
			color.blue = 1.0f / 32;
			}

			return color; //retourne la couleur selon le protocol rouge, vert, bleu, alpha
			//où alpha represente le facteur de transparence de la couleur (de 0 à 1)
			}

symkit_prog/beta/assets.cpp294866bb78d1ancarola