1 | /* |
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2 | ----------------------------------------------------------------------------- |
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3 | This source file is part of OGRE |
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4 | (Object-oriented Graphics Rendering Engine) |
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5 | For the latest info, see http://www.ogre3d.org/ |
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6 | |
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7 | Copyright (c) 2000-2006 Torus Knot Software Ltd |
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8 | Also see acknowledgements in Readme.html |
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9 | |
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10 | This program is free software; you can redistribute it and/or modify it under |
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11 | the terms of the GNU Lesser General Public License as published by the Free Software |
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12 | Foundation; either version 2 of the License, or (at your option) any later |
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13 | version. |
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14 | |
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15 | This program is distributed in the hope that it will be useful, but WITHOUT |
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16 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
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17 | FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. |
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18 | |
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19 | You should have received a copy of the GNU Lesser General Public License along with |
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20 | this program; if not, write to the Free Software Foundation, Inc., 59 Temple |
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21 | Place - Suite 330, Boston, MA 02111-1307, USA, or go to |
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22 | http://www.gnu.org/copyleft/lesser.txt. |
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23 | |
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24 | You may alternatively use this source under the terms of a specific version of |
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25 | the OGRE Unrestricted License provided you have obtained such a license from |
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26 | Torus Knot Software Ltd. |
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27 | ----------------------------------------------------------------------------- |
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28 | */ |
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29 | #include "OgreStableHeaders.h" |
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30 | #include "OgrePredefinedControllers.h" |
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31 | |
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32 | #include "OgreRoot.h" |
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33 | #include "OgreMath.h" |
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34 | #include "OgreLogManager.h" |
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35 | #include "OgreTextureUnitState.h" |
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36 | |
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37 | namespace Ogre |
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38 | { |
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39 | //----------------------------------------------------------------------- |
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40 | // FrameTimeControllerValue |
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41 | //----------------------------------------------------------------------- |
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42 | FrameTimeControllerValue::FrameTimeControllerValue() |
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43 | { |
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44 | // Register self |
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45 | Root::getSingleton().addFrameListener(this); |
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46 | mFrameTime = 0; |
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47 | mTimeFactor = 1; |
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48 | mFrameDelay = 0; |
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49 | mElapsedTime = 0; |
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50 | |
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51 | } |
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52 | //----------------------------------------------------------------------- |
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53 | bool FrameTimeControllerValue::frameStarted(const FrameEvent &evt) |
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54 | { |
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55 | if(mFrameDelay) |
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56 | { |
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57 | // Fixed frame time |
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58 | mFrameTime = mFrameDelay; |
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59 | mTimeFactor = mFrameDelay / evt.timeSinceLastFrame; |
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60 | } |
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61 | else |
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62 | { |
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63 | // Save the time value after applying time factor |
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64 | mFrameTime = mTimeFactor * evt.timeSinceLastFrame; |
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65 | } |
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66 | // Accumulate the elapsed time |
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67 | mElapsedTime += mFrameTime; |
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68 | return true; |
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69 | } |
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70 | //----------------------------------------------------------------------- |
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71 | bool FrameTimeControllerValue::frameEnded(const FrameEvent &evt) |
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72 | { |
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73 | return true; |
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74 | } |
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75 | //----------------------------------------------------------------------- |
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76 | Real FrameTimeControllerValue::getValue() const |
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77 | { |
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78 | return mFrameTime; |
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79 | } |
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80 | //----------------------------------------------------------------------- |
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81 | void FrameTimeControllerValue::setValue(Real value) |
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82 | { |
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83 | // Do nothing - value is set from frame listener |
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84 | } |
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85 | //----------------------------------------------------------------------- |
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86 | Real FrameTimeControllerValue::getTimeFactor(void) const { |
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87 | return mTimeFactor; |
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88 | } |
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89 | //----------------------------------------------------------------------- |
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90 | void FrameTimeControllerValue::setTimeFactor(Real tf) { |
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91 | if(tf >= 0) |
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92 | { |
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93 | mTimeFactor = tf; |
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94 | mFrameDelay = 0; |
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95 | } |
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96 | } |
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97 | //----------------------------------------------------------------------- |
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98 | Real FrameTimeControllerValue::getFrameDelay(void) const { |
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99 | return mFrameDelay; |
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100 | } |
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101 | //----------------------------------------------------------------------- |
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102 | void FrameTimeControllerValue::setFrameDelay(Real fd) { |
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103 | mTimeFactor = 0; |
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104 | mFrameDelay = fd; |
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105 | } |
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106 | //----------------------------------------------------------------------- |
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107 | Real FrameTimeControllerValue::getElapsedTime(void) const |
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108 | { |
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109 | return mElapsedTime; |
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110 | } |
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111 | //----------------------------------------------------------------------- |
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112 | void FrameTimeControllerValue::setElapsedTime(Real elapsedTime) |
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113 | { |
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114 | mElapsedTime = elapsedTime; |
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115 | } |
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116 | //----------------------------------------------------------------------- |
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117 | // TextureFrameControllerValue |
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118 | //----------------------------------------------------------------------- |
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119 | TextureFrameControllerValue::TextureFrameControllerValue(TextureUnitState* t) |
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120 | { |
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121 | mTextureLayer = t; |
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122 | } |
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123 | //----------------------------------------------------------------------- |
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124 | Real TextureFrameControllerValue::getValue(void) const |
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125 | { |
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126 | int numFrames = mTextureLayer->getNumFrames(); |
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127 | return (mTextureLayer->getCurrentFrame() / numFrames); |
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128 | } |
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129 | //----------------------------------------------------------------------- |
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130 | void TextureFrameControllerValue::setValue(Real value) |
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131 | { |
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132 | int numFrames = mTextureLayer->getNumFrames(); |
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133 | mTextureLayer->setCurrentFrame((int)(value * numFrames) % numFrames); |
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134 | } |
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135 | //----------------------------------------------------------------------- |
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136 | // TexCoordModifierControllerValue |
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137 | //----------------------------------------------------------------------- |
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138 | TexCoordModifierControllerValue::TexCoordModifierControllerValue(TextureUnitState* t, |
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139 | bool translateU, bool translateV, bool scaleU, bool scaleV, bool rotate ) |
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140 | { |
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141 | mTextureLayer = t; |
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142 | mTransU = translateU; |
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143 | mTransV = translateV; |
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144 | mScaleU = scaleU; |
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145 | mScaleV = scaleV; |
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146 | mRotate = rotate; |
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147 | } |
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148 | //----------------------------------------------------------------------- |
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149 | Real TexCoordModifierControllerValue::getValue() const |
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150 | { |
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151 | const Matrix4& pMat = mTextureLayer->getTextureTransform(); |
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152 | if (mTransU) |
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153 | { |
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154 | return pMat[0][3]; |
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155 | } |
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156 | else if (mTransV) |
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157 | { |
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158 | return pMat[1][3]; |
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159 | } |
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160 | else if (mScaleU) |
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161 | { |
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162 | return pMat[0][0]; |
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163 | } |
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164 | else if (mScaleV) |
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165 | { |
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166 | return pMat[1][1]; |
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167 | } |
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168 | // Shouldn't get here |
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169 | return 0; |
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170 | } |
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171 | //----------------------------------------------------------------------- |
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172 | void TexCoordModifierControllerValue::setValue(Real value) |
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173 | { |
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174 | if (mTransU) |
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175 | { |
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176 | mTextureLayer->setTextureUScroll(value); |
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177 | } |
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178 | if (mTransV) |
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179 | { |
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180 | mTextureLayer->setTextureVScroll(value); |
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181 | } |
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182 | if (mScaleU) |
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183 | { |
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184 | if (value >= 0) |
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185 | { |
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186 | // Add 1 to scale (+ve scales up) |
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187 | mTextureLayer->setTextureUScale(1 + value); |
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188 | } |
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189 | else |
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190 | { |
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191 | // (-ve scales down) |
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192 | mTextureLayer->setTextureUScale(1 / -value); |
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193 | } |
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194 | } |
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195 | if (mScaleV) |
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196 | { |
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197 | if (value >= 0) |
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198 | { |
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199 | // Add 1 to scale (+ve scales up) |
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200 | mTextureLayer->setTextureVScale(1 + value); |
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201 | } |
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202 | else |
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203 | { |
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204 | // (-ve scales down) |
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205 | mTextureLayer->setTextureVScale(1 / -value); |
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206 | } |
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207 | } |
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208 | if (mRotate) |
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209 | { |
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210 | mTextureLayer->setTextureRotate(Radian(value * Math::TWO_PI)); |
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211 | } |
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212 | } |
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213 | //----------------------------------------------------------------------- |
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214 | //----------------------------------------------------------------------- |
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215 | FloatGpuParameterControllerValue::FloatGpuParameterControllerValue( |
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216 | GpuProgramParameters* params, size_t index) : |
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217 | mParams(params), mParamIndex(index) |
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218 | { |
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219 | } |
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220 | //----------------------------------------------------------------------- |
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221 | Real FloatGpuParameterControllerValue::getValue(void) const |
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222 | { |
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223 | // do nothing, reading from a set of params not supported |
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224 | return 0.0f; |
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225 | } |
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226 | //----------------------------------------------------------------------- |
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227 | void FloatGpuParameterControllerValue::setValue(Real val) |
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228 | { |
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229 | static Vector4 v4 = Vector4(0,0,0,0); |
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230 | v4.x = val; |
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231 | mParams->setConstant(mParamIndex, v4); |
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232 | } |
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233 | //----------------------------------------------------------------------- |
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234 | // PassthroughControllerFunction |
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235 | //----------------------------------------------------------------------- |
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236 | PassthroughControllerFunction::PassthroughControllerFunction(bool delta) |
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237 | : ControllerFunction<Real>(delta) |
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238 | { |
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239 | } |
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240 | //----------------------------------------------------------------------- |
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241 | Real PassthroughControllerFunction::calculate(Real source) |
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242 | { |
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243 | return getAdjustedInput(source); |
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244 | |
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245 | } |
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246 | //----------------------------------------------------------------------- |
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247 | // AnimationControllerFunction |
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248 | //----------------------------------------------------------------------- |
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249 | AnimationControllerFunction::AnimationControllerFunction(Real sequenceTime, Real timeOffset) |
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250 | : ControllerFunction<Real>(false) |
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251 | { |
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252 | mSeqTime = sequenceTime; |
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253 | mTime = timeOffset; |
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254 | } |
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255 | //----------------------------------------------------------------------- |
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256 | Real AnimationControllerFunction::calculate(Real source) |
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257 | { |
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258 | // Assume source is time since last update |
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259 | mTime += source; |
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260 | // Wrap |
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261 | while (mTime >= mSeqTime) mTime -= mSeqTime; |
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262 | while (mTime < 0) mTime += mSeqTime; |
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263 | |
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264 | // Return parametric |
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265 | return mTime / mSeqTime; |
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266 | } |
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267 | //----------------------------------------------------------------------- |
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268 | void AnimationControllerFunction::setTime(Real timeVal) |
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269 | { |
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270 | mTime = timeVal; |
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271 | } |
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272 | //----------------------------------------------------------------------- |
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273 | void AnimationControllerFunction::setSequenceTime(Real seqVal) |
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274 | { |
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275 | mSeqTime = seqVal; |
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276 | } |
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277 | //----------------------------------------------------------------------- |
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278 | // ScaleControllerFunction |
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279 | //----------------------------------------------------------------------- |
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280 | ScaleControllerFunction::ScaleControllerFunction(Real factor, bool delta) : ControllerFunction<Real>(delta) |
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281 | { |
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282 | mScale = factor; |
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283 | } |
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284 | //----------------------------------------------------------------------- |
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285 | Real ScaleControllerFunction::calculate(Real source) |
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286 | { |
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287 | return getAdjustedInput(source * mScale); |
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288 | |
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289 | } |
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290 | //----------------------------------------------------------------------- |
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291 | // WaveformControllerFunction |
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292 | //----------------------------------------------------------------------- |
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293 | WaveformControllerFunction::WaveformControllerFunction(WaveformType wType, Real base, Real frequency, Real phase, Real amplitude, bool delta, Real dutyCycle) |
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294 | :ControllerFunction<Real>(delta) |
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295 | { |
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296 | mWaveType = wType; |
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297 | mBase = base; |
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298 | mFrequency = frequency; |
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299 | mPhase = phase; |
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300 | mAmplitude = amplitude; |
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301 | mDeltaCount = phase; |
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302 | mDutyCycle = dutyCycle; |
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303 | } |
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304 | //----------------------------------------------------------------------- |
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305 | Real WaveformControllerFunction::getAdjustedInput(Real input) |
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306 | { |
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307 | Real adjusted = ControllerFunction<Real>::getAdjustedInput(input); |
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308 | |
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309 | // If not delta, adjust by phase here |
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310 | // (delta inputs have it adjusted at initialisation) |
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311 | if (!mDeltaInput) |
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312 | { |
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313 | adjusted += mPhase; |
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314 | } |
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315 | |
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316 | return adjusted; |
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317 | } |
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318 | //----------------------------------------------------------------------- |
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319 | Real WaveformControllerFunction::calculate(Real source) |
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320 | { |
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321 | Real input = getAdjustedInput(source * mFrequency); |
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322 | Real output; |
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323 | // For simplicity, factor input down to {0,1) |
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324 | // Use looped subtract rather than divide / round |
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325 | while (input >= 1.0) |
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326 | input -= 1.0; |
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327 | while (input < 0.0) |
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328 | input += 1.0; |
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329 | |
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330 | // Calculate output in -1..1 range |
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331 | switch (mWaveType) |
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332 | { |
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333 | case WFT_SINE: |
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334 | output = Math::Sin(Radian(input * Math::TWO_PI)); |
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335 | break; |
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336 | case WFT_TRIANGLE: |
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337 | if (input < 0.25) |
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338 | output = input * 4; |
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339 | else if (input >= 0.25 && input < 0.75) |
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340 | output = 1.0 - ((input - 0.25) * 4); |
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341 | else |
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342 | output = ((input - 0.75) * 4) - 1.0; |
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343 | |
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344 | break; |
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345 | case WFT_SQUARE: |
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346 | if (input <= 0.5) |
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347 | output = 1.0; |
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348 | else |
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349 | output = -1.0; |
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350 | break; |
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351 | case WFT_SAWTOOTH: |
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352 | output = (input * 2) - 1; |
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353 | break; |
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354 | case WFT_INVERSE_SAWTOOTH: |
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355 | output = -((input * 2) - 1); |
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356 | break; |
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357 | case WFT_PWM: |
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358 | if( input <= mDutyCycle ) |
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359 | output = 1.0; |
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360 | else |
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361 | output = -1.0; |
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362 | break; |
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363 | } |
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364 | |
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365 | // Scale output into 0..1 range and then by base + amplitude |
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366 | return mBase + ((output + 1.0) * 0.5 * mAmplitude); |
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367 | |
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368 | |
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369 | } |
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370 | } |
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371 | |
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