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annotate Framework/Radiography/RadiographyLayerResizeTracker.cpp @ 476:a95090305dd4 am-touch-events

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Introduced ControlPoint instead of Corner in the trackers and layers + drawing mask from the ControlPoints
author am@osimis.io
date Wed, 13 Feb 2019 12:04:02 +0100
parents 3b4df9925db6
children 4f2416d519b4
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1 /**
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2 * Stone of Orthanc
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2019 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Affero General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Affero General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21
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22 #include "RadiographyLayerResizeTracker.h"
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23
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24 #include "RadiographySceneCommand.h"
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25
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26 #include <Core/OrthancException.h>
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27
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28 #include <boost/math/special_functions/round.hpp>
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29
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30
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31 namespace OrthancStone
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32 {
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33 static double ComputeDistance(double x1,
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34 double y1,
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35 double x2,
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36 double y2)
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37 {
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38 double dx = x1 - x2;
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39 double dy = y1 - y2;
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40 return sqrt(dx * dx + dy * dy);
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41 }
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42
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43
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44 class RadiographyLayerResizeTracker::UndoRedoCommand : public RadiographySceneCommand
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45 {
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46 private:
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47 double sourceSpacingX_;
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48 double sourceSpacingY_;
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49 double sourcePanX_;
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50 double sourcePanY_;
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51 double targetSpacingX_;
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52 double targetSpacingY_;
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53 double targetPanX_;
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54 double targetPanY_;
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55
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56 protected:
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57 virtual void UndoInternal(RadiographyLayer& layer) const
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58 {
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59 layer.SetPixelSpacing(sourceSpacingX_, sourceSpacingY_);
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60 layer.SetPan(sourcePanX_, sourcePanY_);
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61 }
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62
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63 virtual void RedoInternal(RadiographyLayer& layer) const
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64 {
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65 layer.SetPixelSpacing(targetSpacingX_, targetSpacingY_);
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66 layer.SetPan(targetPanX_, targetPanY_);
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67 }
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68
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69 public:
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70 UndoRedoCommand(const RadiographyLayerResizeTracker& tracker) :
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71 RadiographySceneCommand(tracker.accessor_),
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72 sourceSpacingX_(tracker.originalSpacingX_),
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73 sourceSpacingY_(tracker.originalSpacingY_),
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74 sourcePanX_(tracker.originalPanX_),
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75 sourcePanY_(tracker.originalPanY_),
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76 targetSpacingX_(tracker.accessor_.GetLayer().GetGeometry().GetPixelSpacingX()),
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77 targetSpacingY_(tracker.accessor_.GetLayer().GetGeometry().GetPixelSpacingY()),
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78 targetPanX_(tracker.accessor_.GetLayer().GetGeometry().GetPanX()),
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79 targetPanY_(tracker.accessor_.GetLayer().GetGeometry().GetPanY())
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80 {
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81 }
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82 };
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83
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84
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85 RadiographyLayerResizeTracker::RadiographyLayerResizeTracker(UndoRedoStack& undoRedoStack,
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86 RadiographyScene& scene,
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87 size_t layer,
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88 const ControlPoint& startControlPoint,
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89 bool roundScaling) :
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90 undoRedoStack_(undoRedoStack),
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91 accessor_(scene, layer),
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92 roundScaling_(roundScaling)
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93 {
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94 if (accessor_.IsValid() &&
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95 accessor_.GetLayer().GetGeometry().IsResizeable())
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96 {
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97 originalSpacingX_ = accessor_.GetLayer().GetGeometry().GetPixelSpacingX();
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98 originalSpacingY_ = accessor_.GetLayer().GetGeometry().GetPixelSpacingY();
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99 originalPanX_ = accessor_.GetLayer().GetGeometry().GetPanX();
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100 originalPanY_ = accessor_.GetLayer().GetGeometry().GetPanY();
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101
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102 size_t oppositeControlPointType;
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103 switch (startControlPoint.index)
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104 {
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105 case ControlPoint_TopLeftCorner:
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106 oppositeControlPointType = ControlPoint_BottomRightCorner;
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107 break;
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108
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109 case ControlPoint_TopRightCorner:
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110 oppositeControlPointType = ControlPoint_BottomLeftCorner;
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111 break;
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112
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113 case ControlPoint_BottomLeftCorner:
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114 oppositeControlPointType = ControlPoint_TopRightCorner;
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115 break;
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116
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117 case ControlPoint_BottomRightCorner:
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118 oppositeControlPointType = ControlPoint_TopLeftCorner;
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119 break;
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120
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121 default:
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122 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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123 }
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124
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125 accessor_.GetLayer().GetControlPoint(startOppositeControlPoint_, oppositeControlPointType);
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126
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127 double d = ComputeDistance(startControlPoint.x, startControlPoint.y, startOppositeControlPoint_.x, startOppositeControlPoint_.y);
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128 if (d >= std::numeric_limits<float>::epsilon())
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129 {
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130 baseScaling_ = 1.0 / d;
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131 }
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132 else
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133 {
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134 // Avoid division by zero in extreme cases
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135 accessor_.Invalidate();
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136 }
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137 }
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138 }
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139
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140
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141 void RadiographyLayerResizeTracker::Render(CairoContext& context,
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142 double zoom)
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143 {
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144 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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145 }
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146
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147
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148 void RadiographyLayerResizeTracker::MouseUp()
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149 {
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150 if (accessor_.IsValid() &&
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151 accessor_.GetLayer().GetGeometry().IsResizeable())
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152 {
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153 undoRedoStack_.Add(new UndoRedoCommand(*this));
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154 }
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155 }
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156
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157
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158 void RadiographyLayerResizeTracker::MouseMove(int displayX,
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159 int displayY,
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160 double sceneX,
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161 double sceneY,
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162 const std::vector<Touch>& displayTouches,
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163 const std::vector<Touch>& sceneTouches)
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164 {
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165 static const double ROUND_SCALING = 0.1;
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166
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167 if (accessor_.IsValid() &&
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168 accessor_.GetLayer().GetGeometry().IsResizeable())
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169 {
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170 double scaling = ComputeDistance(startOppositeControlPoint_.x, startOppositeControlPoint_.y, sceneX, sceneY) * baseScaling_;
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171
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172 if (roundScaling_)
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173 {
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174 scaling = boost::math::round<double>((scaling / ROUND_SCALING) * ROUND_SCALING);
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175 }
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176
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177 RadiographyLayer& layer = accessor_.GetLayer();
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178 layer.SetPixelSpacing(scaling * originalSpacingX_,
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179 scaling * originalSpacingY_);
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180
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181 // Keep the opposite corner at a fixed location
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182 ControlPoint currentOppositeCorner;
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183 layer.GetControlPoint(currentOppositeCorner, startOppositeControlPoint_.index);
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184 layer.SetPan(layer.GetGeometry().GetPanX() + startOppositeControlPoint_.x - currentOppositeCorner.x,
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185 layer.GetGeometry().GetPanY() + startOppositeControlPoint_.y - currentOppositeCorner.y);
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186 }
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187 }
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188 }