Mercurial > hg > orthanc-stone

annotate OrthancStone/Sources/Scene2DViewport/MeasureToolsToolbox.cpp @ 1871:7053b8a0aaec

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 11 Jan 2022 11:18:48 +0100
parents 3889ae96d2e9
children 07964689cb0b
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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
1871
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5 * Copyright (C) 2017-2022 Osimis S.A., Belgium
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6 * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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7 *
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8 * This program is free software: you can redistribute it and/or
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9 * modify it under the terms of the GNU Lesser General Public License
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10 * as published by the Free Software Foundation, either version 3 of
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11 * the License, or (at your option) any later version.
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12 *
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13 * This program is distributed in the hope that it will be useful, but
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14 * WITHOUT ANY WARRANTY; without even the implied warranty of
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 * Lesser General Public License for more details.
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17 *
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18 * You should have received a copy of the GNU Lesser General Public
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19 * License along with this program. If not, see
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20 * <http://www.gnu.org/licenses/>.
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21 **/
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22
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23 #include "MeasureToolsToolbox.h"
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24 #include "PredeclaredTypes.h"
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25 #include "LayerHolder.h"
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26 #include "ViewportController.h"
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27
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28 #include "../Scene2D/TextSceneLayer.h"
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29 #include "../Scene2D/Scene2D.h"
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30 #include "../StoneException.h"
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31
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32 #include <boost/math/constants/constants.hpp>
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33
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34 namespace
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35 {
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36 double g_pi = boost::math::constants::pi<double>();
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37 }
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38
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39 namespace OrthancStone
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40 {
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41 void GetPositionOnBisectingLine(
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42 ScenePoint2D& result
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43 , const ScenePoint2D& p1
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44 , const ScenePoint2D& c
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45 , const ScenePoint2D& p2
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46 , const double d)
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47 {
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48 // TODO: fix correct half-plane
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49 double p1cAngle = atan2(p1.GetY() - c.GetY(), p1.GetX() - c.GetX());
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50 double p2cAngle = atan2(p2.GetY() - c.GetY(), p2.GetX() - c.GetX());
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51 double angle = 0.5 * (p1cAngle + p2cAngle);
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52 double unitVectorX = cos(angle);
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53 double unitVectorY = sin(angle);
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54 double posX = c.GetX() + d * unitVectorX;
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55 double posY = c.GetX() + d * unitVectorY;
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56 result = ScenePoint2D(posX, posY);
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57 }
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58
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59 double RadiansToDegrees(double angleRad)
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60 {
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61 static const double factor = 180.0 / g_pi;
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62 return angleRad * factor;
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63 }
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64
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65 void AddSquare(PolylineSceneLayer::Chain& chain,
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66 const Scene2D& scene,
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67 const ScenePoint2D& centerS,
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68 const double& sideLengthS)
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69 {
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70 /*
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71 The scene is required here because we need to draw the square with its
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72 sides parallel to the SCREEN axis, not the SCENE axis
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73 */
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74
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75 // get the scaling factor
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76 const double sceneToCanvas =
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77 scene.GetSceneToCanvasTransform().ComputeZoom();
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78
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79 chain.clear();
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80 chain.reserve(4);
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81 ScenePoint2D centerC = centerS.Apply(scene.GetSceneToCanvasTransform());
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82 //TODO: take DPI into account
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83 double handleLX = centerC.GetX() - sideLengthS * sceneToCanvas * 0.5;
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84 double handleTY = centerC.GetY() - sideLengthS * sceneToCanvas * 0.5;
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85 double handleRX = centerC.GetX() + sideLengthS * sceneToCanvas * 0.5;
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86 double handleBY = centerC.GetY() + sideLengthS * sceneToCanvas * 0.5;
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87 ScenePoint2D LTC(handleLX, handleTY);
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88 ScenePoint2D RTC(handleRX, handleTY);
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89 ScenePoint2D RBC(handleRX, handleBY);
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90 ScenePoint2D LBC(handleLX, handleBY);
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91
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92 ScenePoint2D startLT = LTC.Apply(scene.GetCanvasToSceneTransform());
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93 ScenePoint2D startRT = RTC.Apply(scene.GetCanvasToSceneTransform());
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94 ScenePoint2D startRB = RBC.Apply(scene.GetCanvasToSceneTransform());
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95 ScenePoint2D startLB = LBC.Apply(scene.GetCanvasToSceneTransform());
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96
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97 chain.push_back(startLT);
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98 chain.push_back(startRT);
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99 chain.push_back(startRB);
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100 chain.push_back(startLB);
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101 }
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102 #if 0
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103 void AddArc(
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104 PolylineSceneLayer::Chain & chain
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105 , const Scene2D & scene
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106 , const ScenePoint2D & p1
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107 , const ScenePoint2D & c
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108 , const ScenePoint2D & p2
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109 , const double& radiusS
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110 , const bool clockwise
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111 , const int subdivisionsCount)
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112 {
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113 double p1cAngle = atan2(p1.GetY() - c.GetY(), p1.GetX() - c.GetX());
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114 double p2cAngle = atan2(p2.GetY() - c.GetY(), p2.GetX() - c.GetX());
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115 AddArc(
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116 chain, scene, c, radiusS, p1cAngle, p2cAngle,
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117 clockwise, subdivisionsCount);
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118 }
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119 #endif
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120
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121 void AddShortestArc(
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122 PolylineSceneLayer::Chain& chain
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123 , const ScenePoint2D& p1
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124 , const ScenePoint2D& c
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125 , const ScenePoint2D& p2
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126 , const double& radiusS
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127 , const int subdivisionsCount)
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128 {
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129 double p1cAngle = atan2(p1.GetY() - c.GetY(), p1.GetX() - c.GetX());
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130 double p2cAngle = atan2(p2.GetY() - c.GetY(), p2.GetX() - c.GetX());
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131 AddShortestArc(
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132 chain, c, radiusS, p1cAngle, p2cAngle, subdivisionsCount);
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133 }
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134
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135 void AddShortestArc(
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136 PolylineSceneLayer::Chain& chain
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137 , const ScenePoint2D& centerS
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138 , const double& radiusS
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139 , const double startAngleRad
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140 , const double endAngleRad
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141 , const int subdivisionsCount)
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142 {
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143 // this gives a signed difference between angle which
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144 // is the smallest difference (in magnitude) between
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145 // the angles
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146 double delta = NormalizeAngle(endAngleRad - startAngleRad);
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147
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148 chain.clear();
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149 chain.reserve(subdivisionsCount + 1);
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150
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151 double angleIncr = delta / static_cast<double>(subdivisionsCount);
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152
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153 double theta = startAngleRad;
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154 for (int i = 0; i < subdivisionsCount + 1; ++i)
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155 {
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156 double offsetX = radiusS * cos(theta);
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157 double offsetY = radiusS * sin(theta);
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158 double pointX = centerS.GetX() + offsetX;
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159 double pointY = centerS.GetY() + offsetY;
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160 chain.push_back(ScenePoint2D(pointX, pointY));
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161 theta += angleIncr;
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162 }
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163 }
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164
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165 #if 0
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166 void AddArc(
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167 PolylineSceneLayer::Chain & chain
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168 , const Scene2D & scene
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169 , const ScenePoint2D & centerS
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170 , const double& radiusS
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171 , const double startAngleRad
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172 , const double endAngleRad
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173 , const bool clockwise
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174 , const int subdivisionsCount)
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175 {
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176 double startAngleRadN = NormalizeAngle(startAngleRad);
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177 double endAngleRadN = NormalizeAngle(endAngleRad);
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178
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179 double angle1Rad = std::min(startAngleRadN, endAngleRadN);
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180 double angle2Rad = std::max(startAngleRadN, endAngleRadN);
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181
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182 // now we are sure angle1Rad < angle2Rad
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183 // this means that if we draw from 1 to 2, it will be clockwise (
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184 // increasing angles).
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185 // let's fix this:
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186 if (!clockwise)
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187 {
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188 angle2Rad -= 2 * g_pi;
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189 // now we are sure angle2Rad < angle1Rad (since they were normalized)
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190 // and, thus, going from 1 to 2 means the angle values will DECREASE,
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191 // which is the definition of anticlockwise
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192 }
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193
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194 chain.clear();
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195 chain.reserve(subdivisionsCount + 1);
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196
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197 double angleIncr = (angle2Rad - angle1Rad)
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198 / static_cast<double>(subdivisionsCount);
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199
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200 double theta = angle1Rad;
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201 for (int i = 0; i < subdivisionsCount + 1; ++i)
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202 {
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203 double offsetX = radiusS * cos(theta);
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204 double offsetY = radiusS * sin(theta);
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205 double pointX = centerS.GetX() + offsetX;
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206 double pointY = centerS.GetY() + offsetY;
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207 chain.push_back(ScenePoint2D(pointX, pointY));
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208 theta += angleIncr;
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209 }
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210 }
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211 #endif
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212
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213 void AddCircle(PolylineSceneLayer::Chain& chain,
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214 const ScenePoint2D& centerS,
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215 const double& radiusS,
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216 const int numSubdivisions)
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217 {
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218 //ScenePoint2D centerC = centerS.Apply(scene.GetSceneToCanvasTransform());
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219 //TODO: take DPI into account
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220
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221 // TODO: automatically compute the number for segments for smooth
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222 // display based on the radius in pixels.
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223
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224 chain.clear();
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225 chain.reserve(numSubdivisions);
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226
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227 double angleIncr = (2.0 * g_pi)
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228 / static_cast<double>(numSubdivisions);
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229
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230 double theta = 0;
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231 for (int i = 0; i < numSubdivisions; ++i)
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232 {
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233 double offsetX = radiusS * cos(theta);
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234 double offsetY = radiusS * sin(theta);
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235 double pointX = centerS.GetX() + offsetX;
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236 double pointY = centerS.GetY() + offsetY;
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237 chain.push_back(ScenePoint2D(pointX, pointY));
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238 theta += angleIncr;
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239 }
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240 }
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241
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242 double NormalizeAngle(double angle)
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243 {
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244 double retAngle = angle;
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245 while (retAngle < -1.0 * g_pi)
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246 retAngle += 2 * g_pi;
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247 while (retAngle >= g_pi)
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248 retAngle -= 2 * g_pi;
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249 return retAngle;
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250 }
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251
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252 double MeasureAngle(const ScenePoint2D& p1, const ScenePoint2D& c, const ScenePoint2D& p2)
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253 {
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254 double p1cAngle = atan2(p1.GetY() - c.GetY(), p1.GetX() - c.GetX());
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255 double p2cAngle = atan2(p2.GetY() - c.GetY(), p2.GetX() - c.GetX());
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256 double delta = p2cAngle - p1cAngle;
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257 return NormalizeAngle(delta);
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258 }
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259
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260
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261 #if 0
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262 void AddEllipse(PolylineSceneLayer::Chain & chain,
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263 const Scene2D & scene,
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264 const ScenePoint2D & centerS,
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265 const double& halfHAxis,
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266 const double& halfVAxis)
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267 {
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268 chain.clear();
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269 chain.reserve(4);
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270 ScenePoint2D centerC = centerS.Apply(scene.GetSceneToCanvasTransform());
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271 //TODO: take DPI into account
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272 double handleLX = centerC.GetX() - sideLength / 2;
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273 double handleTY = centerC.GetY() - sideLength / 2;
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274 double handleRX = centerC.GetX() + sideLength / 2;
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275 double handleBY = centerC.GetY() + sideLength / 2;
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276 ScenePoint2D LTC(handleLX, handleTY);
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277 ScenePoint2D RTC(handleRX, handleTY);
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278 ScenePoint2D RBC(handleRX, handleBY);
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279 ScenePoint2D LBC(handleLX, handleBY);
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280
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281 ScenePoint2D startLT = LTC.Apply(scene.GetCanvasToSceneTransform());
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282 ScenePoint2D startRT = RTC.Apply(scene.GetCanvasToSceneTransform());
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283 ScenePoint2D startRB = RBC.Apply(scene.GetCanvasToSceneTransform());
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284 ScenePoint2D startLB = LBC.Apply(scene.GetCanvasToSceneTransform());
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285
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286 chain.push_back(startLT);
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287 chain.push_back(startRT);
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288 chain.push_back(startRB);
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289 chain.push_back(startLB);
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290 }
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291 #endif
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292
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293 #if ORTHANC_STONE_ENABLE_OUTLINED_TEXT == 1
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294 /**
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295 This utility function assumes that the layer holder contains 5 text layers
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296 and will use the first four ones for the text background and the fifth one
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297 for the actual text
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298 */
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299 void SetTextLayerOutlineProperties(
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300 Scene2D& scene
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301 , boost::shared_ptr<LayerHolder> layerHolder
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302 , const char* text
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303 , ScenePoint2D p
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304 , int startingLayerIndex)
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305 {
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306 double xoffsets[5] = { 2, 0, -2, 0, 0 };
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307 double yoffsets[5] = { 0, -2, 0, 2, 0 };
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308
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309 // get the scaling factor
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310 const double pixelToScene =
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311 scene.GetCanvasToSceneTransform().ComputeZoom();
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312
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313 for (int i = startingLayerIndex; i < startingLayerIndex + 5; ++i)
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314 {
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315 TextSceneLayer* textLayer = layerHolder->GetTextLayer(i);
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316 if (textLayer != NULL)
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317 {
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318 textLayer->SetText(text);
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319
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320 if (i == startingLayerIndex + 4)
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321 {
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322 textLayer->SetColor(TEXT_COLOR_RED,
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323 TEXT_COLOR_GREEN,
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324 TEXT_COLOR_BLUE);
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325 }
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326 else
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327 {
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328 textLayer->SetColor(TEXT_OUTLINE_COLOR_RED,
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329 TEXT_OUTLINE_COLOR_GREEN,
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330 TEXT_OUTLINE_COLOR_BLUE);
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331 }
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332
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333 ScenePoint2D textAnchor;
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334 int offIndex = i - startingLayerIndex;
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335 ORTHANC_ASSERT(offIndex >= 0 && offIndex < 5);
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336 textLayer->SetPosition(
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337 p.GetX() + xoffsets[offIndex] * pixelToScene,
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338 p.GetY() + yoffsets[offIndex] * pixelToScene);
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339 }
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340 }
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341 }
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342 #else
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343 void SetTextLayerProperties(
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344 Scene2D& scene
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345 , boost::shared_ptr<LayerHolder> layerHolder
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346 , const char* text
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347 , ScenePoint2D p
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348 , int layerIndex)
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349 {
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350 TextSceneLayer* textLayer = layerHolder->GetTextLayer(layerIndex);
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351 if (textLayer != NULL)
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352 {
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353 textLayer->SetText(text);
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354 textLayer->SetColor(TEXT_COLOR_RED, TEXT_COLOR_GREEN, TEXT_COLOR_BLUE);
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355
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356 ScenePoint2D textAnchor;
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357 textLayer->SetPosition(p.GetX(), p.GetY());
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358 }
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359 }
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360 #endif
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361
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362 std::ostream& operator<<(std::ostream& os, const ScenePoint2D& p)
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363 {
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364 os << "x = " << p.GetX() << " , y = " << p.GetY();
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365 return os;
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366 }
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367
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368 }