00001 00002 // 00003 // Thor C++ Library 00004 // Copyright (c) 2011 Jan Haller 00005 // 00006 // This software is provided 'as-is', without any express or implied 00007 // warranty. In no event will the authors be held liable for any damages 00008 // arising from the use of this software. 00009 // 00010 // Permission is granted to anyone to use this software for any purpose, 00011 // including commercial applications, and to alter it and redistribute it 00012 // freely, subject to the following restrictions: 00013 // 00014 // 1. The origin of this software must not be misrepresented; you must not 00015 // claim that you wrote the original software. If you use this software 00016 // in a product, an acknowledgment in the product documentation would be 00017 // appreciated but is not required. 00018 // 00019 // 2. Altered source versions must be plainly marked as such, and must not be 00020 // misrepresented as being the original software. 00021 // 00022 // 3. This notice may not be removed or altered from any source distribution. 00023 // 00025 00028 00029 #ifndef THOR_COLORS_HPP 00030 #define THOR_COLORS_HPP 00031 00032 #include <Thor/Detail/ColorImpl.hpp> 00033 #include <Thor/Config.hpp> 00034 00035 #include <SFML/Graphics/Color.hpp> 00036 00037 00038 namespace thor 00039 { 00040 namespace detail 00041 { 00042 00043 class ColorGradientConvertible; 00044 00045 } // namespace detail 00046 00047 00050 00053 extern const sf::Color Transparency; 00054 00061 sf::Color BlendColors(const sf::Color& firstColor, const sf::Color& secondColor, float interpolation); 00062 00076 THOR_DETAIL ColorGradientConvertible THOR_API CreateGradient(const sf::Color& color); 00077 00082 class THOR_API ColorGradient 00083 { 00084 // --------------------------------------------------------------------------------------------------------------------------- 00085 // Public member functions 00086 public: 00089 ColorGradient(const sf::Color& color); 00090 00095 sf::Color GetColor(float interpolation) const; 00096 00097 00098 // --------------------------------------------------------------------------------------------------------------------------- 00099 // Implementation details 00100 public: 00101 // Construct from temporary color gradient 00102 ColorGradient(detail::ColorGradientConvertible origin); 00103 00104 00105 // --------------------------------------------------------------------------------------------------------------------------- 00106 // Private variables 00107 private: 00108 // Normalizes the transition times so that their sum is 1 00109 void Normalize(); 00110 00111 00112 // --------------------------------------------------------------------------------------------------------------------------- 00113 // Private variables 00114 private: 00115 std::vector<sf::Color> mColors; 00116 std::vector<float> mTransitionTimes; 00117 }; 00118 00119 00121 00122 } // namespace thor 00123 00124 #endif // THOR_COLORS_HPP