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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 "RadiographyLayerRotateTracker.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/constants/constants.hpp>
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29 #include <boost/math/special_functions/round.hpp>
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30
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31 namespace OrthancStone
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32 {
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33 class RadiographyLayerRotateTracker::UndoRedoCommand : public RadiographySceneCommand
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34 {
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35 private:
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36 double sourceAngle_;
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37 double targetAngle_;
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38
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39 static int ToDegrees(double angle)
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40 {
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41 return boost::math::iround(angle * 180.0 / boost::math::constants::pi<double>());
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42 }
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43
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44 protected:
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45 virtual void UndoInternal(RadiographyLayer& layer) const
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46 {
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47 LOG(INFO) << "Undo - Set angle to " << ToDegrees(sourceAngle_) << " degrees";
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48 layer.SetAngle(sourceAngle_);
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49 }
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50
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51 virtual void RedoInternal(RadiographyLayer& layer) const
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52 {
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53 LOG(INFO) << "Redo - Set angle to " << ToDegrees(sourceAngle_) << " degrees";
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54 layer.SetAngle(targetAngle_);
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55 }
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56
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57 public:
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58 UndoRedoCommand(const RadiographyLayerRotateTracker& tracker) :
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59 RadiographySceneCommand(tracker.accessor_),
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60 sourceAngle_(tracker.originalAngle_),
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61 targetAngle_(tracker.accessor_.GetLayer().GetGeometry().GetAngle())
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62 {
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63 }
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64 };
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65
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66
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67 bool RadiographyLayerRotateTracker::ComputeAngle(double& angle /* out */,
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68 double sceneX,
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69 double sceneY) const
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70 {
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71 Vector u;
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72 LinearAlgebra::AssignVector(u, sceneX - centerX_, sceneY - centerY_);
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73
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74 double nu = boost::numeric::ublas::norm_2(u);
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75
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76 if (!LinearAlgebra::IsCloseToZero(nu))
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77 {
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78 u /= nu;
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79 angle = atan2(u[1], u[0]);
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80 return true;
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81 }
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82 else
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83 {
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84 return false;
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85 }
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86 }
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87
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88
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89 RadiographyLayerRotateTracker::RadiographyLayerRotateTracker(UndoRedoStack& undoRedoStack,
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90 RadiographyScene& scene,
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91 const ViewportGeometry& view,
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92 size_t layer,
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93 double x,
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94 double y,
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95 bool roundAngles) :
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96 undoRedoStack_(undoRedoStack),
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97 accessor_(scene, layer),
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98 roundAngles_(roundAngles)
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99 {
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100 if (accessor_.IsValid())
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101 {
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102 accessor_.GetLayer().GetCenter(centerX_, centerY_);
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103 originalAngle_ = accessor_.GetLayer().GetGeometry().GetAngle();
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104
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105 double sceneX, sceneY;
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106 view.MapDisplayToScene(sceneX, sceneY, x, y);
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107
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108 if (!ComputeAngle(clickAngle_, x, y))
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109 {
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110 accessor_.Invalidate();
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111 }
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112 }
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113 }
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114
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115
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116 void RadiographyLayerRotateTracker::Render(CairoContext& context,
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117 double zoom)
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118 {
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119 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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120 }
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121
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122
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123 void RadiographyLayerRotateTracker::MouseUp()
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124 {
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125 if (accessor_.IsValid())
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126 {
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127 undoRedoStack_.Add(new UndoRedoCommand(*this));
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128 }
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129 }
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130
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131
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132 void RadiographyLayerRotateTracker::MouseMove(int displayX,
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133 int displayY,
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134 double sceneX,
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135 double sceneY)
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136 {
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137 static const double ROUND_ANGLE = 15.0 / 180.0 * boost::math::constants::pi<double>();
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138
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139 double angle;
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140
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141 if (accessor_.IsValid() &&
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142 ComputeAngle(angle, sceneX, sceneY))
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143 {
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144 angle = angle - clickAngle_ + originalAngle_;
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145
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146 if (roundAngles_)
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147 {
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148 angle = boost::math::round<double>((angle / ROUND_ANGLE) * ROUND_ANGLE);
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149 }
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150
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151 accessor_.GetLayer().SetAngle(angle);
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152 }
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153 }
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154 }
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