Mercurial > hg > orthanc-stone

annotate Framework/Scene2DViewport/MeasureToolsToolbox.cpp @ 1048:f6be9412e42a

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cleaning up IObservable.h
author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 10 Oct 2019 14:11:52 +0200
parents 58eed6bbcabb
children f3bb9a6dd949 b5dec783ba08
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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 #include "../StoneException.h"
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29
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30 #include <boost/math/constants/constants.hpp>
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31
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32 namespace
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33 {
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34 double g_pi = boost::math::constants::pi<double>();
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35 }
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36
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37 namespace OrthancStone
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38 {
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39 void GetPositionOnBisectingLine(
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40 ScenePoint2D& result
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41 , const ScenePoint2D& p1
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42 , const ScenePoint2D& c
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43 , const ScenePoint2D& p2
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44 , const double d)
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45 {
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46 // TODO: fix correct half-plane
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47 double p1cAngle = atan2(p1.GetY() - c.GetY(), p1.GetX() - c.GetX());
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48 double p2cAngle = atan2(p2.GetY() - c.GetY(), p2.GetX() - c.GetX());
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49 double angle = 0.5 * (p1cAngle + p2cAngle);
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50 double unitVectorX = cos(angle);
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51 double unitVectorY = sin(angle);
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52 double posX = c.GetX() + d * unitVectorX;
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53 double posY = c.GetX() + d * unitVectorY;
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54 result = ScenePoint2D(posX, posY);
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55 }
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56
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57 double RadiansToDegrees(double angleRad)
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58 {
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59 static const double factor = 180.0 / g_pi;
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60 return angleRad * factor;
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61 }
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62
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63 void AddSquare(PolylineSceneLayer::Chain& chain,
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64 const Scene2D& scene,
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65 const ScenePoint2D& centerS,
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66 const double& sideLengthS)
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67 {
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68 // get the scaling factor
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69 const double sceneToCanvas =
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70 scene.GetSceneToCanvasTransform().ComputeZoom();
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71
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72 chain.clear();
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73 chain.reserve(4);
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74 ScenePoint2D centerC = centerS.Apply(scene.GetSceneToCanvasTransform());
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75 //TODO: take DPI into account
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76 double handleLX = centerC.GetX() - sideLengthS * sceneToCanvas * 0.5;
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77 double handleTY = centerC.GetY() - sideLengthS * sceneToCanvas * 0.5;
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78 double handleRX = centerC.GetX() + sideLengthS * sceneToCanvas * 0.5;
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79 double handleBY = centerC.GetY() + sideLengthS * sceneToCanvas * 0.5;
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80 ScenePoint2D LTC(handleLX, handleTY);
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81 ScenePoint2D RTC(handleRX, handleTY);
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82 ScenePoint2D RBC(handleRX, handleBY);
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83 ScenePoint2D LBC(handleLX, handleBY);
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84
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85 ScenePoint2D startLT = LTC.Apply(scene.GetCanvasToSceneTransform());
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86 ScenePoint2D startRT = RTC.Apply(scene.GetCanvasToSceneTransform());
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87 ScenePoint2D startRB = RBC.Apply(scene.GetCanvasToSceneTransform());
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88 ScenePoint2D startLB = LBC.Apply(scene.GetCanvasToSceneTransform());
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89
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90 chain.push_back(startLT);
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91 chain.push_back(startRT);
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92 chain.push_back(startRB);
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93 chain.push_back(startLB);
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94 }
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95 #if 0
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96 void AddArc(
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97 PolylineSceneLayer::Chain & chain
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98 , const Scene2D & scene
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99 , const ScenePoint2D & p1
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100 , const ScenePoint2D & c
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101 , const ScenePoint2D & p2
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102 , const double& radiusS
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103 , const bool clockwise
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104 , const int subdivisionsCount)
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105 {
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106 double p1cAngle = atan2(p1.GetY() - c.GetY(), p1.GetX() - c.GetX());
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107 double p2cAngle = atan2(p2.GetY() - c.GetY(), p2.GetX() - c.GetX());
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108 AddArc(
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109 chain, scene, c, radiusS, p1cAngle, p2cAngle,
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110 clockwise, subdivisionsCount);
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111 }
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112 #endif
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113
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114 void AddShortestArc(
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115 PolylineSceneLayer::Chain& chain
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116 , const ScenePoint2D& p1
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117 , const ScenePoint2D& c
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118 , const ScenePoint2D& p2
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119 , const double& radiusS
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120 , const int subdivisionsCount)
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121 {
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122 double p1cAngle = atan2(p1.GetY() - c.GetY(), p1.GetX() - c.GetX());
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123 double p2cAngle = atan2(p2.GetY() - c.GetY(), p2.GetX() - c.GetX());
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124 AddShortestArc(
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125 chain, c, radiusS, p1cAngle, p2cAngle, subdivisionsCount);
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126 }
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127
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128 void AddShortestArc(
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129 PolylineSceneLayer::Chain& chain
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130 , const ScenePoint2D& centerS
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131 , const double& radiusS
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132 , const double startAngleRad
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133 , const double endAngleRad
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134 , const int subdivisionsCount)
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135 {
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136 // this gives a signed difference between angle which
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137 // is the smallest difference (in magnitude) between
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138 // the angles
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139 double delta = NormalizeAngle(endAngleRad - startAngleRad);
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140
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141 chain.clear();
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142 chain.reserve(subdivisionsCount + 1);
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143
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144 double angleIncr = delta / static_cast<double>(subdivisionsCount);
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145
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146 double theta = startAngleRad;
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147 for (int i = 0; i < subdivisionsCount + 1; ++i)
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148 {
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149 double offsetX = radiusS * cos(theta);
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150 double offsetY = radiusS * sin(theta);
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151 double pointX = centerS.GetX() + offsetX;
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152 double pointY = centerS.GetY() + offsetY;
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153 chain.push_back(ScenePoint2D(pointX, pointY));
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154 theta += angleIncr;
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155 }
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156 }
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157
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158 #if 0
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159 void AddArc(
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160 PolylineSceneLayer::Chain & chain
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161 , const Scene2D & scene
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162 , const ScenePoint2D & centerS
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163 , const double& radiusS
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164 , const double startAngleRad
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165 , const double endAngleRad
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166 , const bool clockwise
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167 , const int subdivisionsCount)
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168 {
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169 double startAngleRadN = NormalizeAngle(startAngleRad);
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170 double endAngleRadN = NormalizeAngle(endAngleRad);
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171
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172 double angle1Rad = std::min(startAngleRadN, endAngleRadN);
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173 double angle2Rad = std::max(startAngleRadN, endAngleRadN);
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174
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175 // now we are sure angle1Rad < angle2Rad
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176 // this means that if we draw from 1 to 2, it will be clockwise (
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177 // increasing angles).
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178 // let's fix this:
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179 if (!clockwise)
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180 {
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181 angle2Rad -= 2 * g_pi;
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182 // now we are sure angle2Rad < angle1Rad (since they were normalized)
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183 // and, thus, going from 1 to 2 means the angle values will DECREASE,
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184 // which is the definition of anticlockwise
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185 }
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186
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187 chain.clear();
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188 chain.reserve(subdivisionsCount + 1);
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189
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190 double angleIncr = (angle2Rad - angle1Rad)
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191 / static_cast<double>(subdivisionsCount);
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192
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193 double theta = angle1Rad;
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194 for (int i = 0; i < subdivisionsCount + 1; ++i)
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195 {
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196 double offsetX = radiusS * cos(theta);
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197 double offsetY = radiusS * sin(theta);
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198 double pointX = centerS.GetX() + offsetX;
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199 double pointY = centerS.GetY() + offsetY;
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200 chain.push_back(ScenePoint2D(pointX, pointY));
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201 theta += angleIncr;
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202 }
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203 }
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204 #endif
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205
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206 void AddCircle(PolylineSceneLayer::Chain& chain,
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207 const ScenePoint2D& centerS,
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208 const double& radiusS,
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209 const int numSubdivisions)
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210 {
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211 //ScenePoint2D centerC = centerS.Apply(scene.GetSceneToCanvasTransform());
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212 //TODO: take DPI into account
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213
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214 // TODO: automatically compute the number for segments for smooth
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215 // display based on the radius in pixels.
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216
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217 chain.clear();
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218 chain.reserve(numSubdivisions);
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219
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220 double angleIncr = (2.0 * g_pi)
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221 / static_cast<double>(numSubdivisions);
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222
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223 double theta = 0;
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224 for (int i = 0; i < numSubdivisions; ++i)
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225 {
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226 double offsetX = radiusS * cos(theta);
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227 double offsetY = radiusS * sin(theta);
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228 double pointX = centerS.GetX() + offsetX;
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229 double pointY = centerS.GetY() + offsetY;
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230 chain.push_back(ScenePoint2D(pointX, pointY));
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231 theta += angleIncr;
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232 }
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233 }
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234
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235 double NormalizeAngle(double angle)
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236 {
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237 double retAngle = angle;
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238 while (retAngle < -1.0 * g_pi)
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239 retAngle += 2 * g_pi;
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240 while (retAngle >= g_pi)
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241 retAngle -= 2 * g_pi;
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242 return retAngle;
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243 }
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244
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245 double MeasureAngle(const ScenePoint2D& p1, const ScenePoint2D& c, const ScenePoint2D& p2)
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246 {
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247 double p1cAngle = atan2(p1.GetY() - c.GetY(), p1.GetX() - c.GetX());
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248 double p2cAngle = atan2(p2.GetY() - c.GetY(), p2.GetX() - c.GetX());
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249 double delta = p2cAngle - p1cAngle;
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250 return NormalizeAngle(delta);
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251 }
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252
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253
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254 #if 0
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255 void AddEllipse(PolylineSceneLayer::Chain & chain,
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256 const Scene2D & scene,
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257 const ScenePoint2D & centerS,
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258 const double& halfHAxis,
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259 const double& halfVAxis)
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260 {
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261 chain.clear();
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262 chain.reserve(4);
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263 ScenePoint2D centerC = centerS.Apply(scene.GetSceneToCanvasTransform());
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264 //TODO: take DPI into account
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265 double handleLX = centerC.GetX() - sideLength / 2;
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266 double handleTY = centerC.GetY() - sideLength / 2;
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267 double handleRX = centerC.GetX() + sideLength / 2;
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268 double handleBY = centerC.GetY() + sideLength / 2;
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269 ScenePoint2D LTC(handleLX, handleTY);
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270 ScenePoint2D RTC(handleRX, handleTY);
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271 ScenePoint2D RBC(handleRX, handleBY);
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272 ScenePoint2D LBC(handleLX, handleBY);
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273
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274 ScenePoint2D startLT = LTC.Apply(scene.GetCanvasToSceneTransform());
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275 ScenePoint2D startRT = RTC.Apply(scene.GetCanvasToSceneTransform());
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276 ScenePoint2D startRB = RBC.Apply(scene.GetCanvasToSceneTransform());
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277 ScenePoint2D startLB = LBC.Apply(scene.GetCanvasToSceneTransform());
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278
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279 chain.push_back(startLT);
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280 chain.push_back(startRT);
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281 chain.push_back(startRB);
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282 chain.push_back(startLB);
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283 }
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284 #endif
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285
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286 #if ORTHANC_STONE_ENABLE_OUTLINED_TEXT == 1
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287 /**
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288 This utility function assumes that the layer holder contains 5 text layers
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289 and will use the first four ones for the text background and the fifth one
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290 for the actual text
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291 */
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292 void SetTextLayerOutlineProperties(
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293 Scene2D& scene
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294 , boost::shared_ptr<LayerHolder> layerHolder
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295 , const char* text
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296 , ScenePoint2D p
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297 , int startingLayerIndex)
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298 {
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299 double xoffsets[5] = { 2, 0, -2, 0, 0 };
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300 double yoffsets[5] = { 0, -2, 0, 2, 0 };
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301
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302 // get the scaling factor
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303 const double pixelToScene =
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304 scene.GetCanvasToSceneTransform().ComputeZoom();
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305
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306 for (int i = startingLayerIndex; i < startingLayerIndex + 5; ++i)
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307 {
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308 TextSceneLayer* textLayer = layerHolder->GetTextLayer(i);
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309 ORTHANC_ASSERT(textLayer != NULL);
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310 textLayer->SetText(text);
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311
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312 if (i == startingLayerIndex + 4)
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313 {
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314 textLayer->SetColor(TEXT_COLOR_RED,
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315 TEXT_COLOR_GREEN,
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316 TEXT_COLOR_BLUE);
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317 }
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318 else
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319 {
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320 textLayer->SetColor(TEXT_OUTLINE_COLOR_RED,
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321 TEXT_OUTLINE_COLOR_GREEN,
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322 TEXT_OUTLINE_COLOR_BLUE);
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323 }
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324
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325 ScenePoint2D textAnchor;
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326 int offIndex = i - startingLayerIndex;
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327 ORTHANC_ASSERT(offIndex >= 0 && offIndex < 5);
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328 textLayer->SetPosition(
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329 p.GetX() + xoffsets[offIndex] * pixelToScene,
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330 p.GetY() + yoffsets[offIndex] * pixelToScene);
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331 }
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332 }
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333 #else
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334 void SetTextLayerProperties(
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335 Scene2D& scene
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336 , boost::shared_ptr<LayerHolder> layerHolder
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337 , const char* text
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338 , ScenePoint2D p
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339 , int layerIndex)
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340 {
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341 TextSceneLayer* textLayer = layerHolder->GetTextLayer(layerIndex);
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342 ORTHANC_ASSERT(textLayer != NULL);
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343 textLayer->SetText(text);
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344
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345 textLayer->SetColor(TEXT_COLOR_RED, TEXT_COLOR_GREEN, TEXT_COLOR_BLUE);
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346
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347 ScenePoint2D textAnchor;
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348 textLayer->SetPosition(p.GetX(), p.GetY());
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349 }
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350 #endif
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351
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352 std::ostream& operator<<(std::ostream& os, const ScenePoint2D& p)
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353 {
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354 os << "x = " << p.GetX() << " , y = " << p.GetY();
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355 return os;
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356 }
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357
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358 }