Mercurial > hg > orthanc-stone

annotate Framework/Scene2DViewport/MeasureToolsToolbox.cpp @ 934:094d10ed7ec2

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VolumeSceneLayerSource dtor now clears the layer
author Benjamin Golinvaux <bgo@osimis.io>
date Mon, 29 Jul 2019 13:46:29 +0200
parents 52b1c6ff10c5
children 58eed6bbcabb
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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
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29 #include <boost/math/constants/constants.hpp>
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30
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31 namespace
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32 {
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33 double g_pi = boost::math::constants::pi<double>();
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34 }
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35
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36 namespace OrthancStone
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37 {
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38 void GetPositionOnBisectingLine(
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39 ScenePoint2D& result
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40 , const ScenePoint2D& p1
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41 , const ScenePoint2D& c
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42 , const ScenePoint2D& p2
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43 , const double d)
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44 {
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45 // TODO: fix correct half-plane
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46 double p1cAngle = atan2(p1.GetY() - c.GetY(), p1.GetX() - c.GetX());
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47 double p2cAngle = atan2(p2.GetY() - c.GetY(), p2.GetX() - c.GetX());
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48 double angle = 0.5 * (p1cAngle + p2cAngle);
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49 double unitVectorX = cos(angle);
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50 double unitVectorY = sin(angle);
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51 double posX = c.GetX() + d * unitVectorX;
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52 double posY = c.GetX() + d * unitVectorY;
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53 result = ScenePoint2D(posX, posY);
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54 }
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55
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56 double RadiansToDegrees(double angleRad)
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57 {
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58 static const double factor = 180.0 / g_pi;
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59 return angleRad * factor;
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60 }
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61
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62 void AddSquare(PolylineSceneLayer::Chain& chain,
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63 const Scene2D& scene,
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64 const ScenePoint2D& centerS,
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65 const double& sideLengthS)
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66 {
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67 // get the scaling factor
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68 const double sceneToCanvas =
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69 scene.GetSceneToCanvasTransform().ComputeZoom();
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70
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71 chain.clear();
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72 chain.reserve(4);
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73 ScenePoint2D centerC = centerS.Apply(scene.GetSceneToCanvasTransform());
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74 //TODO: take DPI into account
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75 double handleLX = centerC.GetX() - sideLengthS * sceneToCanvas * 0.5;
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76 double handleTY = centerC.GetY() - sideLengthS * sceneToCanvas * 0.5;
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77 double handleRX = centerC.GetX() + sideLengthS * sceneToCanvas * 0.5;
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78 double handleBY = centerC.GetY() + sideLengthS * sceneToCanvas * 0.5;
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79 ScenePoint2D LTC(handleLX, handleTY);
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80 ScenePoint2D RTC(handleRX, handleTY);
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81 ScenePoint2D RBC(handleRX, handleBY);
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82 ScenePoint2D LBC(handleLX, handleBY);
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83
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84 ScenePoint2D startLT = LTC.Apply(scene.GetCanvasToSceneTransform());
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85 ScenePoint2D startRT = RTC.Apply(scene.GetCanvasToSceneTransform());
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86 ScenePoint2D startRB = RBC.Apply(scene.GetCanvasToSceneTransform());
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87 ScenePoint2D startLB = LBC.Apply(scene.GetCanvasToSceneTransform());
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88
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89 chain.push_back(startLT);
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90 chain.push_back(startRT);
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91 chain.push_back(startRB);
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92 chain.push_back(startLB);
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93 }
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94 #if 0
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95 void AddArc(
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96 PolylineSceneLayer::Chain & chain
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97 , const Scene2D & scene
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98 , const ScenePoint2D & p1
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99 , const ScenePoint2D & c
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100 , const ScenePoint2D & p2
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101 , const double& radiusS
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102 , const bool clockwise
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103 , const int subdivisionsCount)
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104 {
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105 double p1cAngle = atan2(p1.GetY() - c.GetY(), p1.GetX() - c.GetX());
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106 double p2cAngle = atan2(p2.GetY() - c.GetY(), p2.GetX() - c.GetX());
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107 AddArc(
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108 chain, scene, c, radiusS, p1cAngle, p2cAngle,
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109 clockwise, subdivisionsCount);
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110 }
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111 #endif
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112
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113 void AddShortestArc(
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114 PolylineSceneLayer::Chain& chain
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115 , const ScenePoint2D& p1
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116 , const ScenePoint2D& c
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117 , const ScenePoint2D& p2
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118 , const double& radiusS
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119 , const int subdivisionsCount)
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120 {
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121 double p1cAngle = atan2(p1.GetY() - c.GetY(), p1.GetX() - c.GetX());
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122 double p2cAngle = atan2(p2.GetY() - c.GetY(), p2.GetX() - c.GetX());
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123 AddShortestArc(
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124 chain, c, radiusS, p1cAngle, p2cAngle, subdivisionsCount);
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125 }
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126
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127 void AddShortestArc(
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128 PolylineSceneLayer::Chain& chain
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129 , const ScenePoint2D& centerS
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130 , const double& radiusS
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131 , const double startAngleRad
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132 , const double endAngleRad
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133 , const int subdivisionsCount)
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134 {
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135 // this gives a signed difference between angle which
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136 // is the smallest difference (in magnitude) between
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137 // the angles
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138 double delta = NormalizeAngle(endAngleRad - startAngleRad);
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139
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140 chain.clear();
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141 chain.reserve(subdivisionsCount + 1);
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142
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143 double angleIncr = delta / static_cast<double>(subdivisionsCount);
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144
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145 double theta = startAngleRad;
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146 for (int i = 0; i < subdivisionsCount + 1; ++i)
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147 {
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148 double offsetX = radiusS * cos(theta);
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149 double offsetY = radiusS * sin(theta);
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150 double pointX = centerS.GetX() + offsetX;
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151 double pointY = centerS.GetY() + offsetY;
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152 chain.push_back(ScenePoint2D(pointX, pointY));
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153 theta += angleIncr;
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154 }
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155 }
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156
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157 #if 0
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158 void AddArc(
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159 PolylineSceneLayer::Chain & chain
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160 , const Scene2D & scene
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161 , const ScenePoint2D & centerS
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162 , const double& radiusS
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163 , const double startAngleRad
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164 , const double endAngleRad
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165 , const bool clockwise
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166 , const int subdivisionsCount)
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167 {
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168 double startAngleRadN = NormalizeAngle(startAngleRad);
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169 double endAngleRadN = NormalizeAngle(endAngleRad);
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170
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171 double angle1Rad = std::min(startAngleRadN, endAngleRadN);
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172 double angle2Rad = std::max(startAngleRadN, endAngleRadN);
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173
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174 // now we are sure angle1Rad < angle2Rad
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175 // this means that if we draw from 1 to 2, it will be clockwise (
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176 // increasing angles).
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177 // let's fix this:
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178 if (!clockwise)
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179 {
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180 angle2Rad -= 2 * g_pi;
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181 // now we are sure angle2Rad < angle1Rad (since they were normalized)
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182 // and, thus, going from 1 to 2 means the angle values will DECREASE,
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183 // which is the definition of anticlockwise
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184 }
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185
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186 chain.clear();
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187 chain.reserve(subdivisionsCount + 1);
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188
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189 double angleIncr = (angle2Rad - angle1Rad)
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190 / static_cast<double>(subdivisionsCount);
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191
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192 double theta = angle1Rad;
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193 for (int i = 0; i < subdivisionsCount + 1; ++i)
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194 {
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195 double offsetX = radiusS * cos(theta);
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196 double offsetY = radiusS * sin(theta);
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197 double pointX = centerS.GetX() + offsetX;
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198 double pointY = centerS.GetY() + offsetY;
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199 chain.push_back(ScenePoint2D(pointX, pointY));
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200 theta += angleIncr;
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201 }
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202 }
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203 #endif
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204
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205 void AddCircle(PolylineSceneLayer::Chain& chain,
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206 const ScenePoint2D& centerS,
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207 const double& radiusS,
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208 const int numSubdivisions)
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209 {
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210 //ScenePoint2D centerC = centerS.Apply(scene.GetSceneToCanvasTransform());
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211 //TODO: take DPI into account
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212
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213 // TODO: automatically compute the number for segments for smooth
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214 // display based on the radius in pixels.
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215
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216 chain.clear();
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217 chain.reserve(numSubdivisions);
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218
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219 double angleIncr = (2.0 * g_pi)
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220 / static_cast<double>(numSubdivisions);
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221
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222 double theta = 0;
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223 for (int i = 0; i < numSubdivisions; ++i)
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224 {
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225 double offsetX = radiusS * cos(theta);
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226 double offsetY = radiusS * sin(theta);
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227 double pointX = centerS.GetX() + offsetX;
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228 double pointY = centerS.GetY() + offsetY;
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229 chain.push_back(ScenePoint2D(pointX, pointY));
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230 theta += angleIncr;
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231 }
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232 }
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233
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234 double NormalizeAngle(double angle)
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235 {
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236 double retAngle = angle;
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237 while (retAngle < -1.0 * g_pi)
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238 retAngle += 2 * g_pi;
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239 while (retAngle >= g_pi)
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240 retAngle -= 2 * g_pi;
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241 return retAngle;
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242 }
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243
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244 double MeasureAngle(const ScenePoint2D& p1, const ScenePoint2D& c, const ScenePoint2D& p2)
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245 {
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246 double p1cAngle = atan2(p1.GetY() - c.GetY(), p1.GetX() - c.GetX());
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247 double p2cAngle = atan2(p2.GetY() - c.GetY(), p2.GetX() - c.GetX());
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248 double delta = p2cAngle - p1cAngle;
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249 return NormalizeAngle(delta);
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250 }
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251
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252
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253 #if 0
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254 void AddEllipse(PolylineSceneLayer::Chain & chain,
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255 const Scene2D & scene,
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256 const ScenePoint2D & centerS,
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257 const double& halfHAxis,
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258 const double& halfVAxis)
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259 {
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260 chain.clear();
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261 chain.reserve(4);
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262 ScenePoint2D centerC = centerS.Apply(scene.GetSceneToCanvasTransform());
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263 //TODO: take DPI into account
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264 double handleLX = centerC.GetX() - sideLength / 2;
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265 double handleTY = centerC.GetY() - sideLength / 2;
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266 double handleRX = centerC.GetX() + sideLength / 2;
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267 double handleBY = centerC.GetY() + sideLength / 2;
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268 ScenePoint2D LTC(handleLX, handleTY);
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269 ScenePoint2D RTC(handleRX, handleTY);
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270 ScenePoint2D RBC(handleRX, handleBY);
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271 ScenePoint2D LBC(handleLX, handleBY);
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272
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273 ScenePoint2D startLT = LTC.Apply(scene.GetCanvasToSceneTransform());
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274 ScenePoint2D startRT = RTC.Apply(scene.GetCanvasToSceneTransform());
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275 ScenePoint2D startRB = RBC.Apply(scene.GetCanvasToSceneTransform());
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276 ScenePoint2D startLB = LBC.Apply(scene.GetCanvasToSceneTransform());
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277
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278 chain.push_back(startLT);
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279 chain.push_back(startRT);
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280 chain.push_back(startRB);
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281 chain.push_back(startLB);
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282 }
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283 #endif
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284
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285 #if ORTHANC_STONE_ENABLE_OUTLINED_TEXT == 1
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286 /**
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287 This utility function assumes that the layer holder contains 5 text layers
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288 and will use the first four ones for the text background and the fifth one
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289 for the actual text
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290 */
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291 void SetTextLayerOutlineProperties(
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292 Scene2D& scene
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293 , boost::shared_ptr<LayerHolder> layerHolder
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294 , const char* text
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295 , ScenePoint2D p
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296 , int startingLayerIndex)
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297 {
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298 double xoffsets[5] = { 2, 0, -2, 0, 0 };
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299 double yoffsets[5] = { 0, -2, 0, 2, 0 };
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300
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301 // get the scaling factor
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302 const double pixelToScene =
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303 scene.GetCanvasToSceneTransform().ComputeZoom();
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304
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305 for (int i = startingLayerIndex; i < startingLayerIndex + 5; ++i)
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306 {
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307 TextSceneLayer* textLayer = layerHolder->GetTextLayer(i);
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308 ORTHANC_ASSERT(textLayer != NULL);
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309 textLayer->SetText(text);
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310
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311 if (i == startingLayerIndex + 4)
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312 {
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313 textLayer->SetColor(TEXT_COLOR_RED,
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314 TEXT_COLOR_GREEN,
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315 TEXT_COLOR_BLUE);
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316 }
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317 else
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318 {
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319 textLayer->SetColor(TEXT_OUTLINE_COLOR_RED,
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320 TEXT_OUTLINE_COLOR_GREEN,
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321 TEXT_OUTLINE_COLOR_BLUE);
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322 }
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323
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324 ScenePoint2D textAnchor;
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325 int offIndex = i - startingLayerIndex;
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326 ORTHANC_ASSERT(offIndex >= 0 && offIndex < 5);
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327 textLayer->SetPosition(
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328 p.GetX() + xoffsets[offIndex] * pixelToScene,
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329 p.GetY() + yoffsets[offIndex] * pixelToScene);
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330 }
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331 }
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332 #else
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333 void SetTextLayerProperties(
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334 Scene2D& scene
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335 , boost::shared_ptr<LayerHolder> layerHolder
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336 , const char* text
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337 , ScenePoint2D p
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338 , int layerIndex)
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339 {
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340 // get the scaling factor
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341 const double pixelToScene =
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342 scene.GetCanvasToSceneTransform().ComputeZoom();
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343
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344 TextSceneLayer* textLayer = layerHolder->GetTextLayer(layerIndex);
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345 ORTHANC_ASSERT(textLayer != NULL);
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346 textLayer->SetText(text);
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347
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348 textLayer->SetColor(TEXT_COLOR_RED, TEXT_COLOR_GREEN, TEXT_COLOR_BLUE);
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349
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350 ScenePoint2D textAnchor;
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351 textLayer->SetPosition(p.GetX(), p.GetY());
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352 }
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353 #endif
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354
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355 std::ostream& operator<<(std::ostream& os, const ScenePoint2D& p)
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356 {
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357 os << "x = " << p.GetX() << " , y = " << p.GetY();
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358 return os;
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359 }
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360
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361 }