Mercurial > hg > orthanc-stone

annotate Framework/Scene2DViewport/MeasureToolsToolbox.cpp @ 1236:358461330978 broker

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global function GetWebGLViewportsRegistry()
author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 09 Dec 2019 20:45:47 +0100
parents ab06dfdf3b75
children 0ca50d275b9a
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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 #include "MeasureToolsToolbox.h"
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22 #include "PredeclaredTypes.h"
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23 #include "LayerHolder.h"
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24 #include "ViewportController.h"
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25
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26 #include "../Scene2D/TextSceneLayer.h"
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27 #include "../Scene2D/Scene2D.h"
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28 #include "../StoneException.h"
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29
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30 #include <boost/math/constants/constants.hpp>
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31
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32 namespace
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33 {
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34 double g_pi = boost::math::constants::pi<double>();
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35 }
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36
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37 namespace OrthancStone
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38 {
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39 void GetPositionOnBisectingLine(
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40 ScenePoint2D& result
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41 , const ScenePoint2D& p1
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42 , const ScenePoint2D& c
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43 , const ScenePoint2D& p2
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44 , const double d)
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45 {
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46 // TODO: fix correct half-plane
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47 double p1cAngle = atan2(p1.GetY() - c.GetY(), p1.GetX() - c.GetX());
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48 double p2cAngle = atan2(p2.GetY() - c.GetY(), p2.GetX() - c.GetX());
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49 double angle = 0.5 * (p1cAngle + p2cAngle);
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50 double unitVectorX = cos(angle);
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51 double unitVectorY = sin(angle);
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52 double posX = c.GetX() + d * unitVectorX;
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53 double posY = c.GetX() + d * unitVectorY;
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54 result = ScenePoint2D(posX, posY);
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55 }
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56
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57 double RadiansToDegrees(double angleRad)
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58 {
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59 static const double factor = 180.0 / g_pi;
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60 return angleRad * factor;
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61 }
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62
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63 void AddSquare(PolylineSceneLayer::Chain& chain,
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64 const Scene2D& scene,
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65 const ScenePoint2D& centerS,
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66 const double& sideLengthS)
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67 {
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68 /*
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69 The scene is required here because we need to draw the square with its
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70 sides parallel to the SCREEN axis, not the SCENE axis
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71 */
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72
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73 // get the scaling factor
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74 const double sceneToCanvas =
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75 scene.GetSceneToCanvasTransform().ComputeZoom();
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76
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77 chain.clear();
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78 chain.reserve(4);
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79 ScenePoint2D centerC = centerS.Apply(scene.GetSceneToCanvasTransform());
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80 //TODO: take DPI into account
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81 double handleLX = centerC.GetX() - sideLengthS * sceneToCanvas * 0.5;
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82 double handleTY = centerC.GetY() - sideLengthS * sceneToCanvas * 0.5;
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83 double handleRX = centerC.GetX() + sideLengthS * sceneToCanvas * 0.5;
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84 double handleBY = centerC.GetY() + sideLengthS * sceneToCanvas * 0.5;
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85 ScenePoint2D LTC(handleLX, handleTY);
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86 ScenePoint2D RTC(handleRX, handleTY);
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87 ScenePoint2D RBC(handleRX, handleBY);
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88 ScenePoint2D LBC(handleLX, handleBY);
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89
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90 ScenePoint2D startLT = LTC.Apply(scene.GetCanvasToSceneTransform());
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91 ScenePoint2D startRT = RTC.Apply(scene.GetCanvasToSceneTransform());
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92 ScenePoint2D startRB = RBC.Apply(scene.GetCanvasToSceneTransform());
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93 ScenePoint2D startLB = LBC.Apply(scene.GetCanvasToSceneTransform());
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94
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95 chain.push_back(startLT);
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96 chain.push_back(startRT);
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97 chain.push_back(startRB);
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98 chain.push_back(startLB);
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99 }
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100 #if 0
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101 void AddArc(
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102 PolylineSceneLayer::Chain & chain
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103 , const Scene2D & scene
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104 , const ScenePoint2D & p1
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105 , const ScenePoint2D & c
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106 , const ScenePoint2D & p2
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107 , const double& radiusS
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108 , const bool clockwise
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109 , const int subdivisionsCount)
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110 {
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111 double p1cAngle = atan2(p1.GetY() - c.GetY(), p1.GetX() - c.GetX());
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112 double p2cAngle = atan2(p2.GetY() - c.GetY(), p2.GetX() - c.GetX());
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113 AddArc(
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114 chain, scene, c, radiusS, p1cAngle, p2cAngle,
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115 clockwise, subdivisionsCount);
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116 }
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117 #endif
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118
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119 void AddShortestArc(
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120 PolylineSceneLayer::Chain& chain
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121 , const ScenePoint2D& p1
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122 , const ScenePoint2D& c
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123 , const ScenePoint2D& p2
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124 , const double& radiusS
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125 , const int subdivisionsCount)
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126 {
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127 double p1cAngle = atan2(p1.GetY() - c.GetY(), p1.GetX() - c.GetX());
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128 double p2cAngle = atan2(p2.GetY() - c.GetY(), p2.GetX() - c.GetX());
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129 AddShortestArc(
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130 chain, c, radiusS, p1cAngle, p2cAngle, subdivisionsCount);
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131 }
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132
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133 void AddShortestArc(
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134 PolylineSceneLayer::Chain& chain
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135 , const ScenePoint2D& centerS
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136 , const double& radiusS
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137 , const double startAngleRad
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138 , const double endAngleRad
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139 , const int subdivisionsCount)
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140 {
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141 // this gives a signed difference between angle which
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142 // is the smallest difference (in magnitude) between
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143 // the angles
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144 double delta = NormalizeAngle(endAngleRad - startAngleRad);
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145
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146 chain.clear();
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147 chain.reserve(subdivisionsCount + 1);
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148
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149 double angleIncr = delta / static_cast<double>(subdivisionsCount);
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150
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151 double theta = startAngleRad;
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152 for (int i = 0; i < subdivisionsCount + 1; ++i)
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153 {
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154 double offsetX = radiusS * cos(theta);
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155 double offsetY = radiusS * sin(theta);
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156 double pointX = centerS.GetX() + offsetX;
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157 double pointY = centerS.GetY() + offsetY;
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158 chain.push_back(ScenePoint2D(pointX, pointY));
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159 theta += angleIncr;
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160 }
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161 }
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162
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163 #if 0
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164 void AddArc(
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165 PolylineSceneLayer::Chain & chain
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166 , const Scene2D & scene
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167 , const ScenePoint2D & centerS
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168 , const double& radiusS
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169 , const double startAngleRad
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170 , const double endAngleRad
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171 , const bool clockwise
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172 , const int subdivisionsCount)
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173 {
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174 double startAngleRadN = NormalizeAngle(startAngleRad);
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175 double endAngleRadN = NormalizeAngle(endAngleRad);
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176
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177 double angle1Rad = std::min(startAngleRadN, endAngleRadN);
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178 double angle2Rad = std::max(startAngleRadN, endAngleRadN);
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179
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180 // now we are sure angle1Rad < angle2Rad
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181 // this means that if we draw from 1 to 2, it will be clockwise (
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182 // increasing angles).
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183 // let's fix this:
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184 if (!clockwise)
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185 {
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186 angle2Rad -= 2 * g_pi;
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187 // now we are sure angle2Rad < angle1Rad (since they were normalized)
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188 // and, thus, going from 1 to 2 means the angle values will DECREASE,
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189 // which is the definition of anticlockwise
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190 }
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191
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192 chain.clear();
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193 chain.reserve(subdivisionsCount + 1);
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194
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195 double angleIncr = (angle2Rad - angle1Rad)
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196 / static_cast<double>(subdivisionsCount);
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197
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198 double theta = angle1Rad;
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199 for (int i = 0; i < subdivisionsCount + 1; ++i)
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200 {
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201 double offsetX = radiusS * cos(theta);
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202 double offsetY = radiusS * sin(theta);
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203 double pointX = centerS.GetX() + offsetX;
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204 double pointY = centerS.GetY() + offsetY;
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205 chain.push_back(ScenePoint2D(pointX, pointY));
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206 theta += angleIncr;
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207 }
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208 }
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209 #endif
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210
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211 void AddCircle(PolylineSceneLayer::Chain& chain,
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212 const ScenePoint2D& centerS,
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213 const double& radiusS,
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214 const int numSubdivisions)
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215 {
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216 //ScenePoint2D centerC = centerS.Apply(scene.GetSceneToCanvasTransform());
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217 //TODO: take DPI into account
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218
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219 // TODO: automatically compute the number for segments for smooth
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220 // display based on the radius in pixels.
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221
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222 chain.clear();
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223 chain.reserve(numSubdivisions);
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224
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225 double angleIncr = (2.0 * g_pi)
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226 / static_cast<double>(numSubdivisions);
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227
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228 double theta = 0;
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229 for (int i = 0; i < numSubdivisions; ++i)
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230 {
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231 double offsetX = radiusS * cos(theta);
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232 double offsetY = radiusS * sin(theta);
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233 double pointX = centerS.GetX() + offsetX;
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234 double pointY = centerS.GetY() + offsetY;
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235 chain.push_back(ScenePoint2D(pointX, pointY));
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236 theta += angleIncr;
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237 }
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238 }
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239
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240 double NormalizeAngle(double angle)
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241 {
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242 double retAngle = angle;
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243 while (retAngle < -1.0 * g_pi)
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244 retAngle += 2 * g_pi;
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245 while (retAngle >= g_pi)
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246 retAngle -= 2 * g_pi;
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247 return retAngle;
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248 }
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249
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250 double MeasureAngle(const ScenePoint2D& p1, const ScenePoint2D& c, const ScenePoint2D& p2)
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251 {
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252 double p1cAngle = atan2(p1.GetY() - c.GetY(), p1.GetX() - c.GetX());
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253 double p2cAngle = atan2(p2.GetY() - c.GetY(), p2.GetX() - c.GetX());
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254 double delta = p2cAngle - p1cAngle;
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255 return NormalizeAngle(delta);
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256 }
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257
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258
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259 #if 0
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260 void AddEllipse(PolylineSceneLayer::Chain & chain,
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261 const Scene2D & scene,
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262 const ScenePoint2D & centerS,
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263 const double& halfHAxis,
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264 const double& halfVAxis)
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265 {
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266 chain.clear();
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267 chain.reserve(4);
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268 ScenePoint2D centerC = centerS.Apply(scene.GetSceneToCanvasTransform());
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269 //TODO: take DPI into account
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270 double handleLX = centerC.GetX() - sideLength / 2;
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271 double handleTY = centerC.GetY() - sideLength / 2;
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272 double handleRX = centerC.GetX() + sideLength / 2;
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273 double handleBY = centerC.GetY() + sideLength / 2;
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274 ScenePoint2D LTC(handleLX, handleTY);
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275 ScenePoint2D RTC(handleRX, handleTY);
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276 ScenePoint2D RBC(handleRX, handleBY);
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277 ScenePoint2D LBC(handleLX, handleBY);
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278
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279 ScenePoint2D startLT = LTC.Apply(scene.GetCanvasToSceneTransform());
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280 ScenePoint2D startRT = RTC.Apply(scene.GetCanvasToSceneTransform());
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281 ScenePoint2D startRB = RBC.Apply(scene.GetCanvasToSceneTransform());
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282 ScenePoint2D startLB = LBC.Apply(scene.GetCanvasToSceneTransform());
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283
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284 chain.push_back(startLT);
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285 chain.push_back(startRT);
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286 chain.push_back(startRB);
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287 chain.push_back(startLB);
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288 }
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289 #endif
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290
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291 #if ORTHANC_STONE_ENABLE_OUTLINED_TEXT == 1
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292 /**
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293 This utility function assumes that the layer holder contains 5 text layers
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294 and will use the first four ones for the text background and the fifth one
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295 for the actual text
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296 */
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297 void SetTextLayerOutlineProperties(
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298 Scene2D& scene
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299 , boost::shared_ptr<LayerHolder> layerHolder
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300 , const char* text
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301 , ScenePoint2D p
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302 , int startingLayerIndex)
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303 {
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304 double xoffsets[5] = { 2, 0, -2, 0, 0 };
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305 double yoffsets[5] = { 0, -2, 0, 2, 0 };
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306
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307 // get the scaling factor
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308 const double pixelToScene =
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309 scene.GetCanvasToSceneTransform().ComputeZoom();
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310
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311 for (int i = startingLayerIndex; i < startingLayerIndex + 5; ++i)
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312 {
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313 TextSceneLayer* textLayer = layerHolder->GetTextLayer(i);
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314 if (textLayer != NULL)
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315 {
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316 textLayer->SetText(text);
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317
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318 if (i == startingLayerIndex + 4)
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319 {
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320 textLayer->SetColor(TEXT_COLOR_RED,
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321 TEXT_COLOR_GREEN,
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322 TEXT_COLOR_BLUE);
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323 }
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324 else
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325 {
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326 textLayer->SetColor(TEXT_OUTLINE_COLOR_RED,
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327 TEXT_OUTLINE_COLOR_GREEN,
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328 TEXT_OUTLINE_COLOR_BLUE);
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329 }
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330
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331 ScenePoint2D textAnchor;
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332 int offIndex = i - startingLayerIndex;
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333 ORTHANC_ASSERT(offIndex >= 0 && offIndex < 5);
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334 textLayer->SetPosition(
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335 p.GetX() + xoffsets[offIndex] * pixelToScene,
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336 p.GetY() + yoffsets[offIndex] * pixelToScene);
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337 }
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338 }
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339 }
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340 #else
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341 void SetTextLayerProperties(
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342 Scene2D& scene
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343 , boost::shared_ptr<LayerHolder> layerHolder
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344 , const char* text
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345 , ScenePoint2D p
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346 , int layerIndex)
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347 {
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348 TextSceneLayer* textLayer = layerHolder->GetTextLayer(layerIndex);
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349 if (textLayer != NULL)
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350 {
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351 textLayer->SetText(text);
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352 textLayer->SetColor(TEXT_COLOR_RED, TEXT_COLOR_GREEN, TEXT_COLOR_BLUE);
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353
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354 ScenePoint2D textAnchor;
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355 textLayer->SetPosition(p.GetX(), p.GetY());
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356 }
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357 }
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358 #endif
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359
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360 std::ostream& operator<<(std::ostream& os, const ScenePoint2D& p)
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361 {
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362 os << "x = " << p.GetX() << " , y = " << p.GetY();
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363 return os;
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364 }
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365
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366 }