Mercurial > hg > orthanc-stone

annotate Samples/Common/MeasureToolsToolbox.cpp @ 645:1e9ed656318e

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Merge + ongoing measure work
author Benjamin Golinvaux <bgo@osimis.io>
date Mon, 13 May 2019 15:12:56 +0200
parents
children 62f6ff016085
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645
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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
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23 #include <boost/math/constants/constants.hpp>
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24
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25 namespace
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26 {
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27 double g_pi = boost::math::constants::pi<double>();
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28 }
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29
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30 namespace OrthancStone
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31 {
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32
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33 void AddSquare(PolylineSceneLayer::Chain& chain,
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34 const Scene2D& scene,
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35 const ScenePoint2D& centerS,
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36 const double& sideLength)
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37 {
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38 chain.clear();
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39 chain.reserve(4);
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40 ScenePoint2D centerC = centerS.Apply(scene.GetSceneToCanvasTransform());
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41 //TODO: take DPI into account
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42 double handleLX = centerC.GetX() - sideLength / 2;
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43 double handleTY = centerC.GetY() - sideLength / 2;
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44 double handleRX = centerC.GetX() + sideLength / 2;
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45 double handleBY = centerC.GetY() + sideLength / 2;
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46 ScenePoint2D LTC(handleLX, handleTY);
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47 ScenePoint2D RTC(handleRX, handleTY);
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48 ScenePoint2D RBC(handleRX, handleBY);
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49 ScenePoint2D LBC(handleLX, handleBY);
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50
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51 ScenePoint2D startLT = LTC.Apply(scene.GetCanvasToSceneTransform());
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52 ScenePoint2D startRT = RTC.Apply(scene.GetCanvasToSceneTransform());
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53 ScenePoint2D startRB = RBC.Apply(scene.GetCanvasToSceneTransform());
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54 ScenePoint2D startLB = LBC.Apply(scene.GetCanvasToSceneTransform());
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55
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56 chain.push_back(startLT);
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57 chain.push_back(startRT);
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58 chain.push_back(startRB);
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59 chain.push_back(startLB);
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60 }
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61
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62 void AddArc(
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63 PolylineSceneLayer::Chain& chain
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64 , const Scene2D& scene
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65 , const ScenePoint2D& p1
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66 , const ScenePoint2D& c
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67 , const ScenePoint2D& p2
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68 , const double& radiusS
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69 , const bool clockwise
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70 , const int subdivisionsCount)
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71 {
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72 double p1cAngle = atan2(p1.GetY() - c.GetY(), p1.GetX() - c.GetX());
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73 double p2cAngle = atan2(p2.GetY() - c.GetY(), p2.GetX() - c.GetX());
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74 AddArc(
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75 chain, scene, c, radiusS, p1cAngle, p2cAngle,
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76 clockwise, subdivisionsCount);
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77 }
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78
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79 double RadiansToDegrees(double angleRad)
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80 {
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81 static const double factor = 180.0 / g_pi;
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82 return angleRad * factor;
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83 }
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84
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85 void GetPositionOnBisectingLine(
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86 ScenePoint2D& result
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87 , const ScenePoint2D& p1
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88 , const ScenePoint2D& c
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89 , const ScenePoint2D& p2
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90 , const double d)
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91 {
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92 // TODO: fix correct half-plane
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93 double p1cAngle = atan2(p1.GetY() - c.GetY(), p1.GetX() - c.GetX());
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94 double p2cAngle = atan2(p2.GetY() - c.GetY(), p2.GetX() - c.GetX());
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95 double angle = 0.5*(p1cAngle + p2cAngle);
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96 double unitVectorX = cos(angle);
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97 double unitVectorY = sin(angle);
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98 double posX = c.GetX() + d * unitVectorX;
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99 double posY = c.GetX() + d * unitVectorY;
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100 result = ScenePoint2D(posX, posY);
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101 }
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102
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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& centerS
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107 , const double& radiusS
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108 , const double startAngleRad
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109 , const double endAngleRad
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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 startAngleRadN = NormalizeAngle(startAngleRad);
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114 double endAngleRadN = NormalizeAngle(endAngleRad);
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115
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116 double angle1Rad = std::min(startAngleRadN, endAngleRadN);
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117 double angle2Rad = std::max(startAngleRadN, endAngleRadN);
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118
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119 // now we are sure angle1Rad < angle2Rad
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120 // this means that if we draw from 1 to 2, it will be clockwise (
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121 // increasing angles).
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122 // let's fix this:
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123 if (!clockwise)
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124 {
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125 angle2Rad -= 2 * g_pi;
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126 // now we are sure angle2Rad < angle1Rad (since they were normalized)
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127 // and, thus, going from 1 to 2 means the angle values will DECREASE,
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128 // which is the definition of anticlockwise
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129 }
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130
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131 chain.clear();
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132 chain.reserve(subdivisionsCount + 1);
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133
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134 double angleIncr = (angle2Rad - angle1Rad)
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135 / static_cast<double>(subdivisionsCount);
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136
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137 double theta = angle1Rad;
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138 for (int i = 0; i < subdivisionsCount + 1; ++i)
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139 {
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140 double offsetX = radiusS * cos(theta);
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141 double offsetY = radiusS * sin(theta);
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142 double pointX = centerS.GetX() + offsetX;
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143 double pointY = centerS.GetY() + offsetY;
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144 chain.push_back(ScenePoint2D(pointX, pointY));
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145 theta += angleIncr;
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146 }
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147 }
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148
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149 void AddCircle(PolylineSceneLayer::Chain& chain,
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150 const Scene2D& scene,
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151 const ScenePoint2D& centerS,
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152 const double& radiusS,
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153 const int numSubdivisions)
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154 {
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155 //ScenePoint2D centerC = centerS.Apply(scene.GetSceneToCanvasTransform());
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156 //TODO: take DPI into account
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157
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158 // TODO: automatically compute the number for segments for smooth
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159 // display based on the radius in pixels.
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160
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161 chain.clear();
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162 chain.reserve(numSubdivisions);
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163
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164 double angleIncr = (2.0 * g_pi)
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165 / static_cast<double>(numSubdivisions);
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166
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167 double theta = 0;
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168 for (int i = 0; i < numSubdivisions; ++i)
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169 {
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170 double offsetX = radiusS * cos(theta);
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171 double offsetY = radiusS * sin(theta);
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172 double pointX = centerS.GetX() + offsetX;
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173 double pointY = centerS.GetY() + offsetY;
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174 chain.push_back(ScenePoint2D(pointX, pointY));
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175 theta += angleIncr;
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176 }
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177 }
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178
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179 double NormalizeAngle(double angle)
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180 {
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181 double retAngle = angle;
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182 while (retAngle < 0)
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183 retAngle += 2 * g_pi;
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184 while (retAngle >= 2 * g_pi)
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185 retAngle -= 2 * g_pi;
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186 return retAngle;
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187 }
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188
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189 double MeasureAngle(const ScenePoint2D& p1, const ScenePoint2D& c, const ScenePoint2D& p2)
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190 {
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191 double p1cAngle = atan2(p1.GetY() - c.GetY(), p1.GetX() - c.GetX());
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192 double p2cAngle = atan2(p2.GetY() - c.GetY(), p2.GetX() - c.GetX());
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193 double delta = p2cAngle - p1cAngle;
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194 return NormalizeAngle(delta);
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195 }
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196
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197
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198 #if 0
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199 void AddEllipse(PolylineSceneLayer::Chain& chain,
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200 const Scene2D& scene,
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201 const ScenePoint2D& centerS,
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202 const double& halfHAxis,
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203 const double& halfVAxis)
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204 {
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205 chain.clear();
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206 chain.reserve(4);
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207 ScenePoint2D centerC = centerS.Apply(scene.GetSceneToCanvasTransform());
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208 //TODO: take DPI into account
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209 double handleLX = centerC.GetX() - sideLength / 2;
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210 double handleTY = centerC.GetY() - sideLength / 2;
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211 double handleRX = centerC.GetX() + sideLength / 2;
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212 double handleBY = centerC.GetY() + sideLength / 2;
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213 ScenePoint2D LTC(handleLX, handleTY);
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214 ScenePoint2D RTC(handleRX, handleTY);
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215 ScenePoint2D RBC(handleRX, handleBY);
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216 ScenePoint2D LBC(handleLX, handleBY);
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217
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218 ScenePoint2D startLT = LTC.Apply(scene.GetCanvasToSceneTransform());
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219 ScenePoint2D startRT = RTC.Apply(scene.GetCanvasToSceneTransform());
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220 ScenePoint2D startRB = RBC.Apply(scene.GetCanvasToSceneTransform());
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221 ScenePoint2D startLB = LBC.Apply(scene.GetCanvasToSceneTransform());
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222
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223 chain.push_back(startLT);
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224 chain.push_back(startRT);
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225 chain.push_back(startRB);
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226 chain.push_back(startLB);
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227 }
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228 #endif
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229 }