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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 *
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6 * This program is free software: you can redistribute it and/or
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7 * modify it under the terms of the GNU General Public License as
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8 * published by the Free Software Foundation, either version 3 of the
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9 * License, or (at your option) any later version.
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10 *
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11 * In addition, as a special exception, the copyright holders of this
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12 * program give permission to link the code of its release with the
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13 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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14 * that use the same license as the "OpenSSL" library), and distribute
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15 * the linked executables. You must obey the GNU General Public License
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16 * in all respects for all of the code used other than "OpenSSL". If you
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17 * modify file(s) with this exception, you may extend this exception to
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18 * your version of the file(s), but you are not obligated to do so. If
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19 * you do not wish to do so, delete this exception statement from your
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20 * version. If you delete this exception statement from all source files
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21 * in the program, then also delete it here.
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22 *
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23 * This program is distributed in the hope that it will be useful, but
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24 * WITHOUT ANY WARRANTY; without even the implied warranty of
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25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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26 * General Public License for more details.
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27 *
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28 * You should have received a copy of the GNU General Public License
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29 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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30 **/
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31
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32
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33 #define _USE_MATH_DEFINES // To access M_PI in Visual Studio
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34 #include <cmath>
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35
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36 #include "CircleMeasureTracker.h"
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37
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38 #include "../Viewport/CairoFont.h"
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39
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40 #include <stdio.h>
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41
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42 namespace OrthancStone
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43 {
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44 CircleMeasureTracker::CircleMeasureTracker(IStatusBar* statusBar,
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45 const SliceGeometry& slice,
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46 double x,
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47 double y,
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48 uint8_t red,
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49 uint8_t green,
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50 uint8_t blue,
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51 unsigned int fontSize) :
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52 statusBar_(statusBar),
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53 slice_(slice),
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54 x1_(x),
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55 y1_(y),
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56 x2_(x),
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57 y2_(y),
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58 fontSize_(fontSize)
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59 {
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60 color_[0] = red;
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61 color_[1] = green;
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62 color_[2] = blue;
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63 }
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64
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65
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66 void CircleMeasureTracker::Render(CairoContext& context,
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67 double zoom)
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68 {
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69 double x = (x1_ + x2_) / 2.0;
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70 double y = (y1_ + y2_) / 2.0;
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71
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72 Vector tmp;
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73 GeometryToolbox::AssignVector(tmp, x2_ - x1_, y2_ - y1_);
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74 double r = boost::numeric::ublas::norm_2(tmp) / 2.0;
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75
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76 context.SetSourceColor(color_[0], color_[1], color_[2]);
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77
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78 cairo_t* cr = context.GetObject();
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79 cairo_save(cr);
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80 cairo_set_line_width(cr, 2.0 / zoom);
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81 cairo_translate(cr, x, y);
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82 cairo_arc(cr, 0, 0, r, 0, 2 * M_PI);
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83 cairo_stroke_preserve(cr);
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84 cairo_stroke(cr);
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85 cairo_restore(cr);
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86
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87 if (fontSize_ != 0)
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88 {
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89 cairo_move_to(cr, x, y);
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90 CairoFont font("sans-serif", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL);
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91 font.Draw(context, FormatRadius(), static_cast<double>(fontSize_) / zoom);
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92 }
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93 }
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94
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95
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96 double CircleMeasureTracker::GetRadius() const // In millimeters
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97 {
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98 Vector a = slice_.MapSliceToWorldCoordinates(x1_, y1_);
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99 Vector b = slice_.MapSliceToWorldCoordinates(x2_, y2_);
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100 return boost::numeric::ublas::norm_2(b - a) / 2.0;
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101 }
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102
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103
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104 std::string CircleMeasureTracker::FormatRadius() const
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105 {
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106 char buf[64];
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107 sprintf(buf, "%0.01f cm", GetRadius() / 10.0);
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108 return buf;
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109 }
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110
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111 void CircleMeasureTracker::MouseMove(double x,
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112 double y)
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113 {
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114 x2_ = x;
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115 y2_ = y;
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116
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117 if (statusBar_ != NULL)
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118 {
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119 statusBar_->SetMessage("Circle radius: " + FormatRadius());
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120 }
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121 }
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122 }
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