Mercurial > hg > orthanc-stone

annotate Framework/Scene2DViewport/LineMeasureTool.cpp @ 891:0aff28f15ea2

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new abstraction: IViewport
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 10 Jul 2019 18:18:42 +0200
parents c71ef52602a0
children 52b1c6ff10c5
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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 "EditLineMeasureTracker.h"
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24 #include "LayerHolder.h"
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25
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26 #include <Core/Logging.h>
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27
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28 #include <boost/make_shared.hpp>
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29
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30 namespace OrthancStone
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31 {
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32
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33 LineMeasureTool::LineMeasureTool(
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34 MessageBroker& broker, boost::weak_ptr<ViewportController> controllerW)
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35 : MeasureTool(broker, controllerW)
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36 , layerHolder_(boost::make_shared<LayerHolder>(controllerW, 1, 5))
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37 , lineHighlightArea_(LineHighlightArea_None)
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38 {
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39
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40 }
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41
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42 LineMeasureTool::~LineMeasureTool()
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43 {
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44 // this measuring tool is a RABI for the corresponding visual layers
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45 // stored in the 2D scene
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46 Disable();
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47 RemoveFromScene();
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48 }
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49
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50 void LineMeasureTool::RemoveFromScene()
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51 {
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52 if (layerHolder_->AreLayersCreated() && IsSceneAlive())
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53 {
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54 layerHolder_->DeleteLayers();
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55 }
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56 }
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57
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58 void LineMeasureTool::SetStart(ScenePoint2D start)
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59 {
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60 start_ = start;
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61 RefreshScene();
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62 }
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63
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64 void LineMeasureTool::SetEnd(ScenePoint2D end)
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65 {
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66 end_ = end;
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67 RefreshScene();
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68 }
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70 void LineMeasureTool::Set(ScenePoint2D start, ScenePoint2D end)
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71 {
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72 start_ = start;
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73 end_ = end;
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74 RefreshScene();
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75 }
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76
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77 void LineMeasureTool::SetLineHighlightArea(LineHighlightArea area)
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78 {
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79 if (lineHighlightArea_ != area)
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80 {
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81 lineHighlightArea_ = area;
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82 RefreshScene();
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83 }
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84 }
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85
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86 void LineMeasureTool::ResetHighlightState()
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87 {
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88 SetLineHighlightArea(LineHighlightArea_None);
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89 }
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90
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91 void LineMeasureTool::Highlight(ScenePoint2D p)
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92 {
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93 LineHighlightArea lineHighlightArea = LineHitTest(p);
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94 SetLineHighlightArea(lineHighlightArea);
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95 }
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96
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97 LineMeasureTool::LineHighlightArea LineMeasureTool::LineHitTest(ScenePoint2D p) const
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98 {
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99 const double pixelToScene =
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100 GetController()->GetScene().GetCanvasToSceneTransform().ComputeZoom();
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101 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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102
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103 const double sqDistanceFromStart = ScenePoint2D::SquaredDistancePtPt(p, start_);
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104 if (sqDistanceFromStart <= SQUARED_HIT_TEST_MAX_DISTANCE_SCENE_COORD)
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105 return LineHighlightArea_Start;
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106
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107 const double sqDistanceFromEnd = ScenePoint2D::SquaredDistancePtPt(p, end_);
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108 if (sqDistanceFromEnd <= SQUARED_HIT_TEST_MAX_DISTANCE_SCENE_COORD)
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109 return LineHighlightArea_End;
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110
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111 const double sqDistanceFromPtSegment = ScenePoint2D::SquaredDistancePtSegment(start_, end_, p);
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112 if (sqDistanceFromPtSegment <= SQUARED_HIT_TEST_MAX_DISTANCE_SCENE_COORD)
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113 return LineHighlightArea_Segment;
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114
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115 return LineHighlightArea_None;
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116 }
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117
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118 bool LineMeasureTool::HitTest(ScenePoint2D p) const
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119 {
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120 return LineHitTest(p) != LineHighlightArea_None;
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121 }
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122
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123 boost::shared_ptr<IFlexiblePointerTracker> LineMeasureTool::CreateEditionTracker(const PointerEvent& e)
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124 {
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125 ScenePoint2D scenePos = e.GetMainPosition().Apply(
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126 GetController()->GetScene().GetCanvasToSceneTransform());
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127
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128 if (!HitTest(scenePos))
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129 return boost::shared_ptr<IFlexiblePointerTracker>();
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130
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131 /**
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132 new EditLineMeasureTracker(
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133 boost::shared_ptr<LineMeasureTool> measureTool;
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134 MessageBroker & broker,
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135 boost::weak_ptr<ViewportController> controllerW,
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136 const PointerEvent & e);
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137 */
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138 boost::shared_ptr<EditLineMeasureTracker> editLineMeasureTracker(
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139 new EditLineMeasureTracker(shared_from_this(), GetBroker(), GetController(), e));
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140 return editLineMeasureTracker;
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141 }
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142
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143
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144 boost::shared_ptr<MeasureToolMemento> LineMeasureTool::GetMemento() const
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145 {
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146 boost::shared_ptr<LineMeasureToolMemento> memento(new LineMeasureToolMemento());
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147 memento->start_ = start_;
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148 memento->end_ = end_;
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149 return memento;
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150 }
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151
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152 void LineMeasureTool::SetMemento(boost::shared_ptr<MeasureToolMemento> mementoBase)
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153 {
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154 boost::shared_ptr<LineMeasureToolMemento> memento = boost::dynamic_pointer_cast<LineMeasureToolMemento>(mementoBase);
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155 ORTHANC_ASSERT(memento.get() != NULL, "Internal error: wrong (or bad) memento");
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156 start_ = memento->start_;
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157 end_ = memento->end_;
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158 RefreshScene();
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159 }
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160
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161 void LineMeasureTool::RefreshScene()
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162 {
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163 if (IsSceneAlive())
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164 {
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165 if (IsEnabled())
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166 {
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167 layerHolder_->CreateLayersIfNeeded();
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168
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169 {
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170 // Fill the polyline layer with the measurement line
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171
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172 PolylineSceneLayer* polylineLayer = layerHolder_->GetPolylineLayer(0);
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173 polylineLayer->ClearAllChains();
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174
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175 const Color color(TOOL_LINES_COLOR_RED,
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176 TOOL_LINES_COLOR_GREEN,
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177 TOOL_LINES_COLOR_BLUE);
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178
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179 const Color highlightColor(TOOL_LINES_HL_COLOR_RED,
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180 TOOL_LINES_HL_COLOR_GREEN,
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181 TOOL_LINES_HL_COLOR_BLUE);
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182
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183 {
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184 PolylineSceneLayer::Chain chain;
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185 chain.push_back(start_);
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186 chain.push_back(end_);
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187 if(lineHighlightArea_ == LineHighlightArea_Segment)
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188 polylineLayer->AddChain(chain, false, highlightColor);
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189 else
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190 polylineLayer->AddChain(chain, false, color);
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191 }
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192
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193 // handles
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194 {
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195 {
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196 PolylineSceneLayer::Chain chain;
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197
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198 //TODO: take DPI into account
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199 AddSquare(chain, GetController()->GetScene(), start_,
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200 GetController()->GetHandleSideLengthS());
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201
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202 if (lineHighlightArea_ == LineHighlightArea_Start)
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203 polylineLayer->AddChain(chain, true, highlightColor);
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204 else
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205 polylineLayer->AddChain(chain, true, color);
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206 }
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207
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208 {
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209 PolylineSceneLayer::Chain chain;
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210
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211 //TODO: take DPI into account
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212 AddSquare(chain, GetController()->GetScene(), end_,
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213 GetController()->GetHandleSideLengthS());
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214
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215 if (lineHighlightArea_ == LineHighlightArea_End)
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216 polylineLayer->AddChain(chain, true, highlightColor);
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217 else
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218 polylineLayer->AddChain(chain, true, color);
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219 }
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220 }
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221
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222 }
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223 {
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224 // Set the text layer propreties
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225 double deltaX = end_.GetX() - start_.GetX();
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226 double deltaY = end_.GetY() - start_.GetY();
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227 double squareDist = deltaX * deltaX + deltaY * deltaY;
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228 double dist = sqrt(squareDist);
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229 char buf[64];
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230 sprintf(buf, "%0.02f mm", dist);
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231
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232 // TODO: for now we simply position the text overlay at the middle
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233 // of the measuring segment
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234 double midX = 0.5 * (end_.GetX() + start_.GetX());
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235 double midY = 0.5 * (end_.GetY() + start_.GetY());
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236
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237 SetTextLayerOutlineProperties(
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238 GetController()->GetScene(), layerHolder_, buf, ScenePoint2D(midX, midY));
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239 }
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240 }
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241 else
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242 {
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243 RemoveFromScene();
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244 }
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245 }
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246 }
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247 }