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annotate ext/guichan-0.8.1/include/guichan/color.hpp @ 0:4a0efb7baf70

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* Datasets becomes the new trunk and retires after that :-)
author mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
date Sun, 29 Jun 2008 18:44:17 +0000
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4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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1 /* _______ __ __ __ ______ __ __ _______ __ __
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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2 * / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___ /\ / |\/ /\
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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3 * / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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4 * / / /__ / / // / // / // / / / ___ / // ___ / // /| ' / /
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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5 * / /_// /\ / /_// / // / // /_/_ / / // / // /\_/ / // / | / /
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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6 * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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7 * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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8 *
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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9 * Copyright (c) 2004 - 2008 Olof Naessén and Per Larsson
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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10 *
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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11 *
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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12 * Per Larsson a.k.a finalman
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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13 * Olof Naessén a.k.a jansem/yakslem
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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14 *
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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15 * Visit: http://guichan.sourceforge.net
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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16 *
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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17 * License: (BSD)
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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18 * Redistribution and use in source and binary forms, with or without
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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19 * modification, are permitted provided that the following conditions
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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20 * are met:
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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21 * 1. Redistributions of source code must retain the above copyright
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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22 * notice, this list of conditions and the following disclaimer.
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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23 * 2. Redistributions in binary form must reproduce the above copyright
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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24 * notice, this list of conditions and the following disclaimer in
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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25 * the documentation and/or other materials provided with the
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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26 * distribution.
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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27 * 3. Neither the name of Guichan nor the names of its contributors may
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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28 * be used to endorse or promote products derived from this software
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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29 * without specific prior written permission.
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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30 *
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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35 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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36 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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37 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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38 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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39 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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40 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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41 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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42 */
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43
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44 #ifndef GCN_COLOR_HPP
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45 #define GCN_COLOR_HPP
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46
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47 #include "guichan/platform.hpp"
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48
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49 #include <iostream>
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50
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51 namespace gcn
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52 {
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53 /**
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54 * Represents a color with red, green, blue and alpha components.
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55 */
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56 class GCN_CORE_DECLSPEC Color
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57 {
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58 public:
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59
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60 /**
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61 * Constructor. Initializes the color to black.
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62 */
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63 Color();
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64
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65 /**
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66 * Constructor. Constructs a color from the bytes in an integer.
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67 * Call it with a hexadecimal constant for HTML-style color representation.
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68 * The alpha component is 255 by default.
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69 *
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70 * EXAMPLE: Color(0xff50a0) constructs a very nice pinkish color.
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71 *
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72 * NOTE: Because of this constructor, integers will be automatically
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73 * casted to a color by your compiler.
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74 *
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75 * @param color The color to initialise the object with.
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76 */
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77 Color(int color);
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78
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79 /**
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80 * Constructor. The default alpha value is 255.
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81 *
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82 * @param r Red color component (range 0-255).
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83 * @param g Green color component (range 0-255).
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84 * @param b Blue color component (range 0-255).
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85 * @param a Alpha, used for transparency. A value of 0 means
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86 * totaly transparent, 255 is totaly opaque.
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87 */
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88 Color(int r, int g, int b, int a = 255);
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89
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90 /**
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91 * Adds the RGB values of two colors together. The values will be
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92 * clamped if they go out of range.
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93 *
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94 * WARNING: This function will reset the alpha value of the
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95 * returned color to 255.
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96 *
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97 * @param color A color to add to this color.
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98 * @return The added colors with an alpha value set to 255.
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99 */
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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100 Color operator+(const Color& color) const;
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101
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102 /**
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103 * Subtracts the RGB values of one color from another.
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104 * The values will be clamped if they go out of range.
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105 *
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106 * WARNING: This function will reset the alpha value of the
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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107 * returned color to 255.
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108 *
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109 * @param color A color to subtract from this color.
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110 * @return The subtracted colors with an alpha value set to 255.
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111 */
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112 Color operator-(const Color& color) const;
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113
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114 /**
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115 * Multiplies the RGB values of a color with a float value.
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116 * The values will be clamped if they go out of range.
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117 *
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118 * @param value The value to multiply the color with.
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119 * @return The multiplied colors. The alpha value will, unlike
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120 * the add and subtract operations, be multiplied as
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121 * well.
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122 */
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123 Color operator*(float value) const;
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124
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125 /**
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126 * Compares two colors.
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127 *
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128 * @return True if the two colors have the same RGBA components
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129 * false otherwise.
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130 */
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131 bool operator==(const Color& color) const;
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132
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133 /**
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134 * Compares two colors.
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135 *
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136 * @return True if the two colors have different RGBA components,
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137 * false otherwise.
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138 */
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139 bool operator!=(const Color& color) const;
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140
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141 /**
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142 * Output operator for output.
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143 *
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144 * @param out The stream to output to.
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145 * @param color The color to output.
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146 */
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147 friend std::ostream& operator<<(std::ostream& out,
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148 const Color& Color);
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149
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150 /**
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151 * Holds the red color component (range 0-255).
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152 */
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153 int r;
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154
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155 /**
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156 * Holds the green color component (range 0-255).
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157 */
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158 int g;
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159
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160 /**
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161 * Holds the blue color component (range 0-255).
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162 */
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163 int b;
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164
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165 /**
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166 * Holds the alpha color component. A value of 0 means totally
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167 * transparent while a value of 255 is considered opaque.
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168 */
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169 int a;
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170 };
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171 }
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172
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173 #endif // end GCN_COLOR_HPP