Mercurial > hg > orthanc-stone

annotate Framework/Radiography/RadiographyLayerResizeTracker.cpp @ 440:a750f11892ec am-vsol-upgrade

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merge default->am-vsol-upgrade
author amazy
date Fri, 28 Dec 2018 10:40:34 +0100
parents b85f635f1eb5 b70e9be013e4
children 3b4df9925db6
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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 double x,
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89 double y,
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90 Corner corner,
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91 bool roundScaling) :
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92 undoRedoStack_(undoRedoStack),
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93 accessor_(scene, layer),
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94 roundScaling_(roundScaling)
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95 {
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96 if (accessor_.IsValid() &&
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97 accessor_.GetLayer().GetGeometry().IsResizeable())
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98 {
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99 originalSpacingX_ = accessor_.GetLayer().GetGeometry().GetPixelSpacingX();
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100 originalSpacingY_ = accessor_.GetLayer().GetGeometry().GetPixelSpacingY();
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101 originalPanX_ = accessor_.GetLayer().GetGeometry().GetPanX();
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102 originalPanY_ = accessor_.GetLayer().GetGeometry().GetPanY();
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103
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104 switch (corner)
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105 {
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106 case Corner_TopLeft:
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107 oppositeCorner_ = Corner_BottomRight;
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108 break;
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109
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110 case Corner_TopRight:
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111 oppositeCorner_ = Corner_BottomLeft;
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112 break;
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113
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114 case Corner_BottomLeft:
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115 oppositeCorner_ = Corner_TopRight;
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116 break;
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117
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118 case Corner_BottomRight:
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119 oppositeCorner_ = Corner_TopLeft;
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120 break;
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121
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122 default:
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123 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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124 }
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125
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126 accessor_.GetLayer().GetCorner(oppositeX_, oppositeY_, oppositeCorner_);
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127
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128 double d = ComputeDistance(x, y, oppositeX_, oppositeY_);
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129 if (d >= std::numeric_limits<float>::epsilon())
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130 {
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131 baseScaling_ = 1.0 / d;
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132 }
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133 else
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134 {
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135 // Avoid division by zero in extreme cases
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136 accessor_.Invalidate();
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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
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142 void RadiographyLayerResizeTracker::Render(CairoContext& context,
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143 double zoom)
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144 {
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145 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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146 }
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147
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148
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149 void RadiographyLayerResizeTracker::MouseUp()
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150 {
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151 if (accessor_.IsValid() &&
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152 accessor_.GetLayer().GetGeometry().IsResizeable())
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153 {
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154 undoRedoStack_.Add(new UndoRedoCommand(*this));
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155 }
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156 }
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157
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158
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159 void RadiographyLayerResizeTracker::MouseMove(int displayX,
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160 int displayY,
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161 double sceneX,
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162 double sceneY)
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163 {
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164 static const double ROUND_SCALING = 0.1;
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165
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166 if (accessor_.IsValid() &&
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167 accessor_.GetLayer().GetGeometry().IsResizeable())
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168 {
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169 double scaling = ComputeDistance(oppositeX_, oppositeY_, sceneX, sceneY) * baseScaling_;
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170
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171 if (roundScaling_)
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172 {
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173 scaling = boost::math::round<double>((scaling / ROUND_SCALING) * ROUND_SCALING);
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174 }
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175
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176 RadiographyLayer& layer = accessor_.GetLayer();
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177 layer.SetPixelSpacing(scaling * originalSpacingX_,
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178 scaling * originalSpacingY_);
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179
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180 // Keep the opposite corner at a fixed location
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181 double ox, oy;
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182 layer.GetCorner(ox, oy, oppositeCorner_);
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183 layer.SetPan(layer.GetGeometry().GetPanX() + oppositeX_ - ox,
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184 layer.GetGeometry().GetPanY() + oppositeY_ - oy);
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185 }
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186 }
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187 }