Mercurial > hg > orthanc-stone

annotate Framework/Scene2DViewport/LineMeasureTool.cpp @ 865:a29c13497557

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Added operators to ScenePoint2D + highlight support on MouseOver for measuring tools
author Benjamin Golinvaux <bgo@osimis.io>
date Tue, 25 Jun 2019 15:24:13 +0200
parents ff3559c489c9
children c71ef52602a0
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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 "LineMeasureTool.h"
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22 #include "MeasureToolsToolbox.h"
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23 #include "LayerHolder.h"
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24
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25 #include <Core/Logging.h>
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26
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27 #include <boost/make_shared.hpp>
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28
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29 namespace OrthancStone
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30 {
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31
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32 LineMeasureTool::LineMeasureTool(
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33 MessageBroker& broker, boost::weak_ptr<ViewportController> controllerW)
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34 : MeasureTool(broker, controllerW)
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35 , layerHolder_(boost::make_shared<LayerHolder>(controllerW, 1, 5))
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36 , lineHighlightArea_(LineHighlightArea_None)
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37 {
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38
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39 }
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40
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41 LineMeasureTool::~LineMeasureTool()
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42 {
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43 // this measuring tool is a RABI for the corresponding visual layers
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44 // stored in the 2D scene
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45 Disable();
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46 RemoveFromScene();
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47 }
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48
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49 void LineMeasureTool::RemoveFromScene()
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50 {
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51 if (layerHolder_->AreLayersCreated() && IsSceneAlive())
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52 {
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53 layerHolder_->DeleteLayers();
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54 }
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55 }
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56
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57 void LineMeasureTool::SetStart(ScenePoint2D start)
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58 {
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59 start_ = start;
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60 RefreshScene();
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61 }
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62
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63 void LineMeasureTool::SetEnd(ScenePoint2D end)
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64 {
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65 end_ = end;
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66 RefreshScene();
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67 }
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68
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69 void LineMeasureTool::Set(ScenePoint2D start, ScenePoint2D end)
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70 {
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71 start_ = start;
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72 end_ = end;
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73 RefreshScene();
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74 }
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75
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76 void LineMeasureTool::SetLineHighlightArea(LineHighlightArea area)
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77 {
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78 if (lineHighlightArea_ != area)
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79 {
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80 lineHighlightArea_ = area;
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81 RefreshScene();
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82 }
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83 }
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84
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85 void LineMeasureTool::ResetHighlightState()
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86 {
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87 SetLineHighlightArea(LineHighlightArea_None);
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88 }
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89
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90 void LineMeasureTool::Highlight(ScenePoint2D p)
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91 {
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92 LineHighlightArea lineHighlightArea = LineHitTest(p);
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93 SetLineHighlightArea(lineHighlightArea);
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94 }
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95
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96 LineMeasureTool::LineHighlightArea LineMeasureTool::LineHitTest(ScenePoint2D p) const
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97 {
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98 const double pixelToScene =
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99 GetScene()->GetCanvasToSceneTransform().ComputeZoom();
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100 const double SQUARED_HIT_TEST_MAX_DISTANCE_SCENE_COORD = pixelToScene * HIT_TEST_MAX_DISTANCE_CANVAS_COORD * pixelToScene * HIT_TEST_MAX_DISTANCE_CANVAS_COORD;
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101
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102 const double sqDistanceFromStart = ScenePoint2D::SquaredDistancePtPt(p, start_);
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103 if (sqDistanceFromStart <= SQUARED_HIT_TEST_MAX_DISTANCE_SCENE_COORD)
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104 return LineHighlightArea_Start;
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105
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106 const double sqDistanceFromEnd = ScenePoint2D::SquaredDistancePtPt(p, end_);
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107 if (sqDistanceFromEnd <= SQUARED_HIT_TEST_MAX_DISTANCE_SCENE_COORD)
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108 return LineHighlightArea_End;
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109
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110 const double sqDistanceFromPtSegment = ScenePoint2D::SquaredDistancePtSegment(start_, end_, p);
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111 if (sqDistanceFromPtSegment <= SQUARED_HIT_TEST_MAX_DISTANCE_SCENE_COORD)
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112 return LineHighlightArea_Segment;
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113
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114 return LineHighlightArea_None;
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115 }
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116
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117 bool LineMeasureTool::HitTest(ScenePoint2D p) const
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118 {
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119 return LineHitTest(p) != LineHighlightArea_None;
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120 }
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121
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122 void LineMeasureTool::RefreshScene()
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123 {
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124 if (IsSceneAlive())
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125 {
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126 if (IsEnabled())
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127 {
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128 layerHolder_->CreateLayersIfNeeded();
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129
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130 {
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131 // Fill the polyline layer with the measurement line
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132
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133 PolylineSceneLayer* polylineLayer = layerHolder_->GetPolylineLayer(0);
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134 polylineLayer->ClearAllChains();
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135
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136 const Color color(TOOL_LINES_COLOR_RED,
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137 TOOL_LINES_COLOR_GREEN,
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138 TOOL_LINES_COLOR_BLUE);
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139
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140 const Color highlightColor(TOOL_LINES_HL_COLOR_RED,
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141 TOOL_LINES_HL_COLOR_GREEN,
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142 TOOL_LINES_HL_COLOR_BLUE);
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143
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144 {
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145 PolylineSceneLayer::Chain chain;
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146 chain.push_back(start_);
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147 chain.push_back(end_);
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148 if(lineHighlightArea_ == LineHighlightArea_Segment)
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149 polylineLayer->AddChain(chain, false, highlightColor);
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150 else
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151 polylineLayer->AddChain(chain, false, color);
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152 }
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153
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154 // handles
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155 {
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156 {
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157 PolylineSceneLayer::Chain chain;
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158
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159 //TODO: take DPI into account
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160 AddSquare(chain, GetScene(), start_,
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161 GetController()->GetHandleSideLengthS());
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162
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163 if (lineHighlightArea_ == LineHighlightArea_Start)
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164 polylineLayer->AddChain(chain, true, highlightColor);
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165 else
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166 polylineLayer->AddChain(chain, true, color);
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167 }
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168
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169 {
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170 PolylineSceneLayer::Chain chain;
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171
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172 //TODO: take DPI into account
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173 AddSquare(chain, GetScene(), end_,
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174 GetController()->GetHandleSideLengthS());
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175
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176 if (lineHighlightArea_ == LineHighlightArea_End)
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177 polylineLayer->AddChain(chain, true, highlightColor);
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178 else
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179 polylineLayer->AddChain(chain, true, color);
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180 }
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181 }
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182
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183 }
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184 {
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185 // Set the text layer propreties
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186 double deltaX = end_.GetX() - start_.GetX();
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187 double deltaY = end_.GetY() - start_.GetY();
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188 double squareDist = deltaX * deltaX + deltaY * deltaY;
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189 double dist = sqrt(squareDist);
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190 char buf[64];
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191 sprintf(buf, "%0.02f mm", dist);
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192
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193 // TODO: for now we simply position the text overlay at the middle
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194 // of the measuring segment
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195 double midX = 0.5 * (end_.GetX() + start_.GetX());
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196 double midY = 0.5 * (end_.GetY() + start_.GetY());
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197
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198 SetTextLayerOutlineProperties(
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199 GetScene(), layerHolder_, buf, ScenePoint2D(midX, midY));
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200 }
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201 }
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202 else
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203 {
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204 RemoveFromScene();
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205 }
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206 }
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207 }
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208 }