Mercurial > hg > orthanc-stone

annotate OrthancStone/Sources/Scene2DViewport/LineMeasureTool.cpp @ 1606:874e178f34e9

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- ViewportController now has weak ptr to Viewport - Measuring tools + related commands and all trackers now store only a weak_ptr to the Viewport and lock() on demand for usage - LayerHolder and FixedPoint aligner store only a weak_ptr to the Viewport, too - Fixed float/double warning in GrayscaleWindowingSceneTracker
author Benjamin Golinvaux <bgo@osimis.io>
date Wed, 28 Oct 2020 20:14:34 +0100
parents 8563ea5d8ae4
children 9ac2a65d4172
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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) 2017-2020 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 Lesser 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 * Lesser 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 Lesser General Public
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18 * License along with this program. If not, see
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19 * <http://www.gnu.org/licenses/>.
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20 **/
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21
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22 #include "LineMeasureTool.h"
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23 #include "MeasureToolsToolbox.h"
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24 #include "EditLineMeasureTracker.h"
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25 #include "LayerHolder.h"
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26 #include "../StoneException.h"
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27
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28 #include <Logging.h>
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30 #include <boost/make_shared.hpp>
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31
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32 namespace OrthancStone
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33 {
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34 LineMeasureTool::LineMeasureTool(
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35 boost::weak_ptr<IViewport> viewport):
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36 MeasureTool(viewport),
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37 #if ORTHANC_STONE_ENABLE_OUTLINED_TEXT == 1
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38 layerHolder_(boost::shared_ptr<LayerHolder>(new LayerHolder(viewport,1,5))),
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39 #else
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40 layerHolder_(boost::shared_ptr<LayerHolder>(new LayerHolder(viewport,1,1))),
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41 #endif
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42 baseLayerIndex_(0),
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43 lineHighlightArea_(LineHighlightArea_None)
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44 {
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46 }
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47
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48 boost::shared_ptr<LineMeasureTool> LineMeasureTool::Create(boost::weak_ptr<IViewport> viewport)
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49 {
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50 boost::shared_ptr<LineMeasureTool> obj(new LineMeasureTool(viewport));
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51 obj->MeasureTool::PostConstructor();
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52 obj->RefreshScene();
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53 return obj;
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54 }
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55
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56 LineMeasureTool::~LineMeasureTool()
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57 {
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58 // this measuring tool is a RABI for the corresponding visual layers
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59 // stored in the 2D scene
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60 Disable();
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61 RemoveFromScene();
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62 }
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63
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64 void LineMeasureTool::RemoveFromScene()
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65 {
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66 if (layerHolder_->AreLayersCreated() && IsSceneAlive())
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67 {
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68 layerHolder_->DeleteLayers();
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69 }
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70 }
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71
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72 void LineMeasureTool::SetStart(ScenePoint2D start)
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73 {
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74 start_ = start;
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75 RefreshScene();
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76 }
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78 void LineMeasureTool::SetEnd(ScenePoint2D end)
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79 {
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80 end_ = end;
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81 RefreshScene();
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82 }
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83
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84 void LineMeasureTool::Set(ScenePoint2D start, ScenePoint2D end)
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85 {
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86 start_ = start;
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87 end_ = end;
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88 RefreshScene();
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89 }
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90
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91 void LineMeasureTool::SetLineHighlightArea(LineHighlightArea area)
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92 {
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93 if (lineHighlightArea_ != area)
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94 {
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95 lineHighlightArea_ = area;
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96 RefreshScene();
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97 }
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98 }
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99
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100 std::string LineMeasureTool::GetDescription()
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101 {
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102 std::stringstream ss;
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103 ss << "LineMeasureTool. Start = " << start_ << " End = " << end_;
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104 return ss.str();
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105 }
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106
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107 void LineMeasureTool::ResetHighlightState()
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108 {
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109 SetLineHighlightArea(LineHighlightArea_None);
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110 }
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111
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112 void LineMeasureTool::Highlight(ScenePoint2D p)
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113 {
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114 LineHighlightArea lineHighlightArea = LineHitTest(p);
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115 SetLineHighlightArea(lineHighlightArea);
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116 }
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117
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118 LineMeasureTool::LineHighlightArea LineMeasureTool::LineHitTest(ScenePoint2D p)
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119 {
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120 std::unique_ptr<IViewport::ILock> lock(GetViewportLock());
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121 ViewportController& controller = lock->GetController();
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122 const Scene2D& scene = controller.GetScene();
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123
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124 const double pixelToScene = scene.GetCanvasToSceneTransform().ComputeZoom();
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125 const double SQUARED_HIT_TEST_MAX_DISTANCE_SCENE_COORD =
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126 pixelToScene * HIT_TEST_MAX_DISTANCE_CANVAS_COORD *
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127 pixelToScene * HIT_TEST_MAX_DISTANCE_CANVAS_COORD;
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128
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129 const double sqDistanceFromStart =
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130 ScenePoint2D::SquaredDistancePtPt(p, start_);
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131
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132 if (sqDistanceFromStart <= SQUARED_HIT_TEST_MAX_DISTANCE_SCENE_COORD)
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133 return LineHighlightArea_Start;
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134
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135 const double sqDistanceFromEnd = ScenePoint2D::SquaredDistancePtPt(p, end_);
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136
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137 if (sqDistanceFromEnd <= SQUARED_HIT_TEST_MAX_DISTANCE_SCENE_COORD)
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138 return LineHighlightArea_End;
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139
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140 const double sqDistanceFromPtSegment =
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141 ScenePoint2D::SquaredDistancePtSegment(start_, end_, p);
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142
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143 if (sqDistanceFromPtSegment <= SQUARED_HIT_TEST_MAX_DISTANCE_SCENE_COORD)
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144 return LineHighlightArea_Segment;
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145
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146 return LineHighlightArea_None;
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147 }
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148
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149 bool LineMeasureTool::HitTest(ScenePoint2D p)
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150 {
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151 return LineHitTest(p) != LineHighlightArea_None;
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152 }
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153
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154 boost::shared_ptr<IFlexiblePointerTracker> LineMeasureTool::CreateEditionTracker(const PointerEvent& e)
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155 {
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156 std::unique_ptr<IViewport::ILock> lock(GetViewportLock());
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157 ViewportController& controller = lock->GetController();
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158 const Scene2D& scene = controller.GetScene();
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159
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160 ScenePoint2D scenePos = e.GetMainPosition().Apply(
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161 scene.GetCanvasToSceneTransform());
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162
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163 if (!HitTest(scenePos))
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164 return boost::shared_ptr<IFlexiblePointerTracker>();
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165
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166 boost::shared_ptr<EditLineMeasureTracker> editLineMeasureTracker(
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167 new EditLineMeasureTracker(shared_from_this(), viewport_, e));
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168 return editLineMeasureTracker;
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169 }
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170
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171 boost::shared_ptr<MeasureToolMemento> LineMeasureTool::GetMemento() const
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172 {
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173 boost::shared_ptr<LineMeasureToolMemento> memento(new LineMeasureToolMemento());
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174 memento->start_ = start_;
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175 memento->end_ = end_;
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176 return memento;
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177 }
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178
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179 void LineMeasureTool::SetMemento(
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180 boost::shared_ptr<MeasureToolMemento> mementoBase)
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181 {
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182 boost::shared_ptr<LineMeasureToolMemento> memento =
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183 boost::dynamic_pointer_cast<LineMeasureToolMemento>(mementoBase);
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184
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185 ORTHANC_ASSERT(memento.get() != NULL, "Internal error: wrong (or bad) memento");
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186
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187 start_ = memento->start_;
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188 end_ = memento->end_;
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189 RefreshScene();
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190 }
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191
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192 void LineMeasureTool::RefreshScene()
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193 {
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194 if (IsSceneAlive())
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195 {
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196 if (IsEnabled())
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197 {
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198
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199 std::unique_ptr<IViewport::ILock> lock(GetViewportLock());
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200 ViewportController& controller = lock->GetController();
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201 Scene2D& scene = controller.GetScene();
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202
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203 layerHolder_->CreateLayersIfNeeded();
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204 {
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205 // Fill the polyline layer with the measurement line
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206
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207 PolylineSceneLayer* polylineLayer = layerHolder_->GetPolylineLayer(0);
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208 if (polylineLayer)
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209 {
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210 polylineLayer->ClearAllChains();
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211
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212 const Color color(TOOL_LINES_COLOR_RED,
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213 TOOL_LINES_COLOR_GREEN,
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214 TOOL_LINES_COLOR_BLUE);
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215
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216 const Color highlightColor(TOOL_LINES_HL_COLOR_RED,
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217 TOOL_LINES_HL_COLOR_GREEN,
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218 TOOL_LINES_HL_COLOR_BLUE);
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219
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220 {
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221 PolylineSceneLayer::Chain chain;
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222 chain.push_back(start_);
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223 chain.push_back(end_);
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224 if(lineHighlightArea_ == LineHighlightArea_Segment)
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225 polylineLayer->AddChain(chain, false, highlightColor);
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226 else
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227 polylineLayer->AddChain(chain, false, color);
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228 }
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229
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230 // handles
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231 {
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232 {
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233 PolylineSceneLayer::Chain chain;
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234
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235 //TODO: take DPI into account
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236 AddSquare(chain, controller.GetScene(), start_,
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237 controller.GetHandleSideLengthS());
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238
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239 if (lineHighlightArea_ == LineHighlightArea_Start)
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240 polylineLayer->AddChain(chain, true, highlightColor);
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241 else
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242 polylineLayer->AddChain(chain, true, color);
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243 }
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244
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245 {
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246 PolylineSceneLayer::Chain chain;
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247
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248 //TODO: take DPI into account
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249 AddSquare(chain, controller.GetScene(), end_,
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250 controller.GetHandleSideLengthS());
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251
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252 if (lineHighlightArea_ == LineHighlightArea_End)
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253 polylineLayer->AddChain(chain, true, highlightColor);
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254 else
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255 polylineLayer->AddChain(chain, true, color);
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256 }
722
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257 }
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258 }
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259 }
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260 {
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261 // Set the text layer propreties
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262 double deltaX = end_.GetX() - start_.GetX();
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263 double deltaY = end_.GetY() - start_.GetY();
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264 double squareDist = deltaX * deltaX + deltaY * deltaY;
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265 double dist = sqrt(squareDist);
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266 char buf[64];
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267 sprintf(buf, "%0.02f mm", dist);
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268
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269 // TODO: for now we simply position the text overlay at the middle
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270 // of the measuring segment
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271 double midX = 0.5 * (end_.GetX() + start_.GetX());
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272 double midY = 0.5 * (end_.GetY() + start_.GetY());
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273
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274 {
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275
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276 #if ORTHANC_STONE_ENABLE_OUTLINED_TEXT == 1
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277 SetTextLayerOutlineProperties(
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278 scene, layerHolder_, buf, ScenePoint2D(midX, midY), 0);
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279 #else
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280 SetTextLayerProperties(
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281 scene, layerHolder_, buf, ScenePoint2D(midX, midY), 0);
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282 #endif
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283 lock->Invalidate();
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284 }
698
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285 }
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286 lock->Invalidate();
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287 }
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288 else
698
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289 {
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290 RemoveFromScene();
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291 }
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292 }
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293 }
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294 }