1 | /////////////////////////////////////////////////////////////////////////// |
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2 | // |
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3 | // Copyright (c) 2004, Industrial Light & Magic, a division of Lucas |
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4 | // Digital Ltd. LLC |
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5 | // |
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6 | // All rights reserved. |
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7 | // |
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8 | // Redistribution and use in source and binary forms, with or without |
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9 | // modification, are permitted provided that the following conditions are |
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10 | // met: |
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11 | // * Redistributions of source code must retain the above copyright |
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12 | // notice, this list of conditions and the following disclaimer. |
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13 | // * Redistributions in binary form must reproduce the above |
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14 | // copyright notice, this list of conditions and the following disclaimer |
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15 | // in the documentation and/or other materials provided with the |
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16 | // distribution. |
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17 | // * Neither the name of Industrial Light & Magic nor the names of |
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18 | // its contributors may be used to endorse or promote products derived |
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19 | // from this software without specific prior written permission. |
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20 | // |
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21 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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22 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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23 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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24 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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25 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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26 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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27 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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28 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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29 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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30 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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31 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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32 | // |
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33 | /////////////////////////////////////////////////////////////////////////// |
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34 | |
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35 | |
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36 | |
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37 | #ifndef INCLUDED_IMATHCOLOR_H |
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38 | #define INCLUDED_IMATHCOLOR_H |
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39 | |
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40 | //---------------------------------------------------- |
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41 | // |
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42 | // A three and four component color class template. |
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43 | // |
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44 | //---------------------------------------------------- |
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45 | |
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46 | #include <ImathVec.h> |
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47 | #include <half.h> |
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48 | |
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49 | namespace Imath { |
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50 | |
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51 | |
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52 | template <class T> |
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53 | class Color3: public Vec3 <T> |
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54 | { |
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55 | public: |
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56 | |
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57 | //------------- |
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58 | // Constructors |
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59 | //------------- |
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60 | |
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61 | Color3 (); // no initialization |
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62 | explicit Color3 (T a); // (a a a) |
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63 | Color3 (T a, T b, T c); // (a b c) |
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64 | |
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65 | |
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66 | //--------------------------------- |
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67 | // Copy constructors and assignment |
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68 | //--------------------------------- |
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69 | |
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70 | Color3 (const Color3 &c); |
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71 | template <class S> Color3 (const Vec3<S> &v); |
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72 | |
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73 | const Color3 & operator = (const Color3 &c); |
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74 | |
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75 | |
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76 | //------------------------ |
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77 | // Component-wise addition |
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78 | //------------------------ |
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79 | |
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80 | const Color3 & operator += (const Color3 &c); |
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81 | Color3 operator + (const Color3 &c) const; |
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82 | |
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83 | |
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84 | //--------------------------- |
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85 | // Component-wise subtraction |
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86 | //--------------------------- |
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87 | |
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88 | const Color3 & operator -= (const Color3 &c); |
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89 | Color3 operator - (const Color3 &c) const; |
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90 | |
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91 | |
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92 | //------------------------------------ |
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93 | // Component-wise multiplication by -1 |
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94 | //------------------------------------ |
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95 | |
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96 | Color3 operator - () const; |
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97 | const Color3 & negate (); |
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98 | |
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99 | |
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100 | //------------------------------ |
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101 | // Component-wise multiplication |
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102 | //------------------------------ |
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103 | |
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104 | const Color3 & operator *= (const Color3 &c); |
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105 | const Color3 & operator *= (T a); |
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106 | Color3 operator * (const Color3 &c) const; |
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107 | Color3 operator * (T a) const; |
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108 | |
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109 | |
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110 | //------------------------ |
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111 | // Component-wise division |
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112 | //------------------------ |
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113 | |
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114 | const Color3 & operator /= (const Color3 &c); |
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115 | const Color3 & operator /= (T a); |
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116 | Color3 operator / (const Color3 &c) const; |
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117 | Color3 operator / (T a) const; |
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118 | }; |
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119 | |
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120 | template <class T> class Color4 |
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121 | { |
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122 | public: |
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123 | |
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124 | //------------------- |
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125 | // Access to elements |
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126 | //------------------- |
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127 | |
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128 | T r, g, b, a; |
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129 | |
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130 | T & operator [] (int i); |
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131 | const T & operator [] (int i) const; |
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132 | |
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133 | |
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134 | //------------- |
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135 | // Constructors |
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136 | //------------- |
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137 | |
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138 | Color4 (); // no initialization |
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139 | explicit Color4 (T a); // (a a a a) |
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140 | Color4 (T a, T b, T c, T d); // (a b c d) |
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141 | |
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142 | |
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143 | //--------------------------------- |
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144 | // Copy constructors and assignment |
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145 | //--------------------------------- |
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146 | |
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147 | Color4 (const Color4 &v); |
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148 | template <class S> Color4 (const Color4<S> &v); |
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149 | |
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150 | const Color4 & operator = (const Color4 &v); |
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151 | |
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152 | |
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153 | //---------------------- |
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154 | // Compatibility with Sb |
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155 | //---------------------- |
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156 | |
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157 | template <class S> |
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158 | void setValue (S a, S b, S c, S d); |
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159 | |
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160 | template <class S> |
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161 | void setValue (const Color4<S> &v); |
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162 | |
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163 | template <class S> |
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164 | void getValue (S &a, S &b, S &c, S &d) const; |
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165 | |
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166 | template <class S> |
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167 | void getValue (Color4<S> &v) const; |
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168 | |
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169 | T * getValue(); |
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170 | const T * getValue() const; |
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171 | |
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172 | |
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173 | //--------- |
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174 | // Equality |
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175 | //--------- |
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176 | |
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177 | template <class S> |
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178 | bool operator == (const Color4<S> &v) const; |
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179 | |
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180 | template <class S> |
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181 | bool operator != (const Color4<S> &v) const; |
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182 | |
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183 | |
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184 | //------------------------ |
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185 | // Component-wise addition |
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186 | //------------------------ |
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187 | |
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188 | const Color4 & operator += (const Color4 &v); |
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189 | Color4 operator + (const Color4 &v) const; |
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190 | |
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191 | |
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192 | //--------------------------- |
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193 | // Component-wise subtraction |
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194 | //--------------------------- |
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195 | |
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196 | const Color4 & operator -= (const Color4 &v); |
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197 | Color4 operator - (const Color4 &v) const; |
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198 | |
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199 | |
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200 | //------------------------------------ |
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201 | // Component-wise multiplication by -1 |
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202 | //------------------------------------ |
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203 | |
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204 | Color4 operator - () const; |
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205 | const Color4 & negate (); |
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206 | |
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207 | |
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208 | //------------------------------ |
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209 | // Component-wise multiplication |
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210 | //------------------------------ |
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211 | |
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212 | const Color4 & operator *= (const Color4 &v); |
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213 | const Color4 & operator *= (T a); |
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214 | Color4 operator * (const Color4 &v) const; |
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215 | Color4 operator * (T a) const; |
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216 | |
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217 | |
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218 | //------------------------ |
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219 | // Component-wise division |
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220 | //------------------------ |
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221 | |
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222 | const Color4 & operator /= (const Color4 &v); |
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223 | const Color4 & operator /= (T a); |
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224 | Color4 operator / (const Color4 &v) const; |
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225 | Color4 operator / (T a) const; |
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226 | |
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227 | |
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228 | //---------------------------------------------------------- |
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229 | // Number of dimensions, i.e. number of elements in a Color4 |
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230 | //---------------------------------------------------------- |
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231 | |
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232 | static unsigned int dimensions() {return 4;} |
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233 | |
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234 | |
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235 | //------------------------------------------------- |
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236 | // Limitations of type T (see also class limits<T>) |
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237 | //------------------------------------------------- |
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238 | |
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239 | static T baseTypeMin() {return limits<T>::min();} |
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240 | static T baseTypeMax() {return limits<T>::max();} |
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241 | static T baseTypeSmallest() {return limits<T>::smallest();} |
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242 | static T baseTypeEpsilon() {return limits<T>::epsilon();} |
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243 | |
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244 | |
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245 | //-------------------------------------------------------------- |
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246 | // Base type -- in templates, which accept a parameter, V, which |
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247 | // could be a Color4<T>, you can refer to T as |
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248 | // V::BaseType |
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249 | //-------------------------------------------------------------- |
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250 | |
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251 | typedef T BaseType; |
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252 | }; |
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253 | |
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254 | //-------------- |
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255 | // Stream output |
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256 | //-------------- |
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257 | |
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258 | template <class T> |
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259 | std::ostream & operator << (std::ostream &s, const Color4<T> &v); |
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260 | |
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261 | //---------------------------------------------------- |
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262 | // Reverse multiplication: S * Color4<T> |
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263 | //---------------------------------------------------- |
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264 | |
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265 | template <class S, class T> Color4<T> operator * (S a, const Color4<T> &v); |
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266 | |
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267 | //------------------------- |
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268 | // Typedefs for convenience |
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269 | //------------------------- |
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270 | |
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271 | typedef Color3<float> Color3f; |
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272 | typedef Color3<half> Color3h; |
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273 | typedef Color3<unsigned char> Color3c; |
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274 | typedef Color3<half> C3h; |
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275 | typedef Color3<float> C3f; |
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276 | typedef Color3<unsigned char> C3c; |
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277 | typedef Color4<float> Color4f; |
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278 | typedef Color4<half> Color4h; |
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279 | typedef Color4<unsigned char> Color4c; |
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280 | typedef Color4<float> C4f; |
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281 | typedef Color4<half> C4h; |
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282 | typedef Color4<unsigned char> C4c; |
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283 | typedef unsigned int PackedColor; |
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284 | |
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285 | |
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286 | //------------------------- |
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287 | // Implementation of Color3 |
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288 | //------------------------- |
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289 | |
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290 | template <class T> |
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291 | inline |
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292 | Color3<T>::Color3 (): Vec3 <T> () |
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293 | { |
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294 | // empty |
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295 | } |
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296 | |
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297 | template <class T> |
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298 | inline |
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299 | Color3<T>::Color3 (T a): Vec3 <T> (a) |
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300 | { |
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301 | // empty |
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302 | } |
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303 | |
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304 | template <class T> |
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305 | inline |
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306 | Color3<T>::Color3 (T a, T b, T c): Vec3 <T> (a, b, c) |
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307 | { |
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308 | // empty |
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309 | } |
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310 | |
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311 | template <class T> |
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312 | inline |
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313 | Color3<T>::Color3 (const Color3 &c): Vec3 <T> (c) |
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314 | { |
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315 | // empty |
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316 | } |
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317 | |
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318 | template <class T> |
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319 | template <class S> |
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320 | inline |
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321 | Color3<T>::Color3 (const Vec3<S> &v): Vec3 <T> (v) |
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322 | { |
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323 | //empty |
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324 | } |
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325 | |
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326 | template <class T> |
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327 | inline const Color3<T> & |
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328 | Color3<T>::operator = (const Color3 &c) |
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329 | { |
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330 | *((Vec3<T> *) this) = c; |
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331 | return *this; |
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332 | } |
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333 | |
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334 | template <class T> |
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335 | inline const Color3<T> & |
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336 | Color3<T>::operator += (const Color3 &c) |
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337 | { |
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338 | *((Vec3<T> *) this) += c; |
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339 | return *this; |
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340 | } |
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341 | |
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342 | template <class T> |
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343 | inline Color3<T> |
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344 | Color3<T>::operator + (const Color3 &c) const |
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345 | { |
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346 | return Color3 (*(Vec3<T> *)this + (const Vec3<T> &)c); |
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347 | } |
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348 | |
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349 | template <class T> |
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350 | inline const Color3<T> & |
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351 | Color3<T>::operator -= (const Color3 &c) |
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352 | { |
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353 | *((Vec3<T> *) this) -= c; |
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354 | return *this; |
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355 | } |
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356 | |
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357 | template <class T> |
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358 | inline Color3<T> |
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359 | Color3<T>::operator - (const Color3 &c) const |
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360 | { |
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361 | return Color3 (*(Vec3<T> *)this - (const Vec3<T> &)c); |
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362 | } |
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363 | |
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364 | template <class T> |
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365 | inline Color3<T> |
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366 | Color3<T>::operator - () const |
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367 | { |
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368 | return Color3 (-(*(Vec3<T> *)this)); |
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369 | } |
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370 | |
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371 | template <class T> |
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372 | inline const Color3<T> & |
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373 | Color3<T>::negate () |
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374 | { |
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375 | ((Vec3<T> *) this)->negate(); |
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376 | return *this; |
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377 | } |
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378 | |
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379 | template <class T> |
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380 | inline const Color3<T> & |
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381 | Color3<T>::operator *= (const Color3 &c) |
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382 | { |
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383 | *((Vec3<T> *) this) *= c; |
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384 | return *this; |
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385 | } |
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386 | |
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387 | template <class T> |
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388 | inline const Color3<T> & |
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389 | Color3<T>::operator *= (T a) |
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390 | { |
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391 | *((Vec3<T> *) this) *= a; |
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392 | return *this; |
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393 | } |
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394 | |
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395 | template <class T> |
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396 | inline Color3<T> |
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397 | Color3<T>::operator * (const Color3 &c) const |
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398 | { |
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399 | return Color3 (*(Vec3<T> *)this * (const Vec3<T> &)c); |
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400 | } |
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401 | |
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402 | template <class T> |
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403 | inline Color3<T> |
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404 | Color3<T>::operator * (T a) const |
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405 | { |
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406 | return Color3 (*(Vec3<T> *)this * a); |
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407 | } |
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408 | |
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409 | template <class T> |
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410 | inline const Color3<T> & |
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411 | Color3<T>::operator /= (const Color3 &c) |
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412 | { |
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413 | *((Vec3<T> *) this) /= c; |
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414 | return *this; |
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415 | } |
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416 | |
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417 | template <class T> |
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418 | inline const Color3<T> & |
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419 | Color3<T>::operator /= (T a) |
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420 | { |
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421 | *((Vec3<T> *) this) /= a; |
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422 | return *this; |
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423 | } |
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424 | |
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425 | template <class T> |
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426 | inline Color3<T> |
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427 | Color3<T>::operator / (const Color3 &c) const |
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428 | { |
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429 | return Color3 (*(Vec3<T> *)this / (const Vec3<T> &)c); |
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430 | } |
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431 | |
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432 | template <class T> |
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433 | inline Color3<T> |
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434 | Color3<T>::operator / (T a) const |
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435 | { |
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436 | return Color3 (*(Vec3<T> *)this / a); |
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437 | } |
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438 | |
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439 | //----------------------- |
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440 | // Implementation of Color4 |
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441 | //----------------------- |
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442 | |
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443 | template <class T> |
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444 | inline T & |
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445 | Color4<T>::operator [] (int i) |
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446 | { |
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447 | return (&r)[i]; |
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448 | } |
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449 | |
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450 | template <class T> |
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451 | inline const T & |
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452 | Color4<T>::operator [] (int i) const |
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453 | { |
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454 | return (&r)[i]; |
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455 | } |
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456 | |
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457 | template <class T> |
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458 | inline |
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459 | Color4<T>::Color4 () |
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460 | { |
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461 | // empty |
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462 | } |
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463 | |
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464 | template <class T> |
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465 | inline |
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466 | Color4<T>::Color4 (T x) |
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467 | { |
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468 | r = g = b = a = x; |
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469 | } |
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470 | |
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471 | template <class T> |
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472 | inline |
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473 | Color4<T>::Color4 (T x, T y, T z, T w) |
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474 | { |
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475 | r = x; |
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476 | g = y; |
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477 | b = z; |
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478 | a = w; |
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479 | } |
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480 | |
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481 | template <class T> |
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482 | inline |
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483 | Color4<T>::Color4 (const Color4 &v) |
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484 | { |
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485 | r = v.r; |
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486 | g = v.g; |
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487 | b = v.b; |
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488 | a = v.a; |
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489 | } |
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490 | |
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491 | template <class T> |
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492 | template <class S> |
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493 | inline |
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494 | Color4<T>::Color4 (const Color4<S> &v) |
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495 | { |
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496 | r = T (v.r); |
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497 | g = T (v.g); |
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498 | b = T (v.b); |
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499 | a = T (v.a); |
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500 | } |
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501 | |
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502 | template <class T> |
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503 | inline const Color4<T> & |
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504 | Color4<T>::operator = (const Color4 &v) |
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505 | { |
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506 | r = v.r; |
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507 | g = v.g; |
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508 | b = v.b; |
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509 | a = v.a; |
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510 | return *this; |
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511 | } |
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512 | |
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513 | template <class T> |
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514 | template <class S> |
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515 | inline void |
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516 | Color4<T>::setValue (S x, S y, S z, S w) |
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517 | { |
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518 | r = T (x); |
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519 | g = T (y); |
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520 | b = T (z); |
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521 | a = T (w); |
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522 | } |
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523 | |
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524 | template <class T> |
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525 | template <class S> |
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526 | inline void |
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527 | Color4<T>::setValue (const Color4<S> &v) |
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528 | { |
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529 | r = T (v.r); |
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530 | g = T (v.g); |
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531 | b = T (v.b); |
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532 | a = T (v.a); |
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533 | } |
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534 | |
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535 | template <class T> |
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536 | template <class S> |
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537 | inline void |
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538 | Color4<T>::getValue (S &x, S &y, S &z, S &w) const |
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539 | { |
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540 | x = S (r); |
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541 | y = S (g); |
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542 | z = S (b); |
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543 | w = S (a); |
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544 | } |
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545 | |
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546 | template <class T> |
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547 | template <class S> |
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548 | inline void |
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549 | Color4<T>::getValue (Color4<S> &v) const |
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550 | { |
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551 | v.r = S (r); |
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552 | v.g = S (g); |
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553 | v.b = S (b); |
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554 | v.a = S (a); |
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555 | } |
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556 | |
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557 | template <class T> |
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558 | inline T * |
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559 | Color4<T>::getValue() |
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560 | { |
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561 | return (T *) &r; |
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562 | } |
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563 | |
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564 | template <class T> |
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565 | inline const T * |
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566 | Color4<T>::getValue() const |
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567 | { |
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568 | return (const T *) &r; |
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569 | } |
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570 | |
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571 | template <class T> |
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572 | template <class S> |
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573 | inline bool |
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574 | Color4<T>::operator == (const Color4<S> &v) const |
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575 | { |
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576 | return r == v.r && g == v.g && b == v.b && a == v.a; |
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577 | } |
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578 | |
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579 | template <class T> |
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580 | template <class S> |
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581 | inline bool |
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582 | Color4<T>::operator != (const Color4<S> &v) const |
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583 | { |
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584 | return r != v.r || g != v.g || b != v.b || a != v.a; |
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585 | } |
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586 | |
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587 | template <class T> |
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588 | inline const Color4<T> & |
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589 | Color4<T>::operator += (const Color4 &v) |
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590 | { |
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591 | r += v.r; |
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592 | g += v.g; |
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593 | b += v.b; |
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594 | a += v.a; |
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595 | return *this; |
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596 | } |
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597 | |
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598 | template <class T> |
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599 | inline Color4<T> |
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600 | Color4<T>::operator + (const Color4 &v) const |
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601 | { |
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602 | return Color4 (r + v.r, g + v.g, b + v.b, a + v.a); |
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603 | } |
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604 | |
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605 | template <class T> |
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606 | inline const Color4<T> & |
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607 | Color4<T>::operator -= (const Color4 &v) |
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608 | { |
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609 | r -= v.r; |
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610 | g -= v.g; |
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611 | b -= v.b; |
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612 | a -= v.a; |
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613 | return *this; |
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614 | } |
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615 | |
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616 | template <class T> |
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617 | inline Color4<T> |
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618 | Color4<T>::operator - (const Color4 &v) const |
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619 | { |
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620 | return Color4 (r - v.r, g - v.g, b - v.b, a - v.a); |
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621 | } |
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622 | |
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623 | template <class T> |
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624 | inline Color4<T> |
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625 | Color4<T>::operator - () const |
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626 | { |
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627 | return Color4 (-r, -g, -b, -a); |
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628 | } |
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629 | |
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630 | template <class T> |
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631 | inline const Color4<T> & |
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632 | Color4<T>::negate () |
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633 | { |
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634 | r = -r; |
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635 | g = -g; |
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636 | b = -b; |
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637 | a = -a; |
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638 | return *this; |
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639 | } |
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640 | |
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641 | template <class T> |
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642 | inline const Color4<T> & |
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643 | Color4<T>::operator *= (const Color4 &v) |
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644 | { |
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645 | r *= v.r; |
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646 | g *= v.g; |
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647 | b *= v.b; |
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648 | a *= v.a; |
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649 | return *this; |
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650 | } |
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651 | |
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652 | template <class T> |
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653 | inline const Color4<T> & |
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654 | Color4<T>::operator *= (T x) |
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655 | { |
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656 | r *= x; |
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657 | g *= x; |
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658 | b *= x; |
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659 | a *= x; |
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660 | return *this; |
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661 | } |
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662 | |
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663 | template <class T> |
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664 | inline Color4<T> |
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665 | Color4<T>::operator * (const Color4 &v) const |
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666 | { |
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667 | return Color4 (r * v.r, g * v.g, b * v.b, a * v.a); |
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668 | } |
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669 | |
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670 | template <class T> |
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671 | inline Color4<T> |
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672 | Color4<T>::operator * (T x) const |
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673 | { |
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674 | return Color4 (r * x, g * x, b * x, a * x); |
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675 | } |
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676 | |
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677 | template <class T> |
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678 | inline const Color4<T> & |
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679 | Color4<T>::operator /= (const Color4 &v) |
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680 | { |
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681 | r /= v.r; |
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682 | g /= v.g; |
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683 | b /= v.b; |
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684 | a /= v.a; |
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685 | return *this; |
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686 | } |
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687 | |
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688 | template <class T> |
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689 | inline const Color4<T> & |
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690 | Color4<T>::operator /= (T x) |
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691 | { |
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692 | r /= x; |
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693 | g /= x; |
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694 | b /= x; |
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695 | a /= x; |
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696 | return *this; |
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697 | } |
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698 | |
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699 | template <class T> |
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700 | inline Color4<T> |
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701 | Color4<T>::operator / (const Color4 &v) const |
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702 | { |
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703 | return Color4 (r / v.r, g / v.g, b / v.b, a / v.a); |
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704 | } |
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705 | |
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706 | template <class T> |
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707 | inline Color4<T> |
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708 | Color4<T>::operator / (T x) const |
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709 | { |
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710 | return Color4 (r / x, g / x, b / x, a / x); |
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711 | } |
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712 | |
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713 | |
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714 | template <class T> |
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715 | std::ostream & |
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716 | operator << (std::ostream &s, const Color4<T> &v) |
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717 | { |
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718 | return s << '(' << v.r << ' ' << v.g << ' ' << v.b << ' ' << v.a << ')'; |
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719 | } |
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720 | |
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721 | //----------------------------------------- |
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722 | // Implementation of reverse multiplication |
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723 | //----------------------------------------- |
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724 | |
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725 | template <class S, class T> |
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726 | inline Color4<T> |
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727 | operator * (S x, const Color4<T> &v) |
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728 | { |
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729 | return Color4<T> (x * v.r, x * v.g, x * v.b, x * v.a); |
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730 | } |
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731 | |
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732 | } // namespace Imath |
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733 | |
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734 | #endif |
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