Mercurial > hg > orthanc-stone
comparison Framework/Layers/CircleMeasureTracker.cpp @ 0:351ab0da0150
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author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Fri, 14 Oct 2016 15:34:11 +0200 |
parents | |
children | 7207a407bcd8 |
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1 /** | |
2 * Stone of Orthanc | |
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
4 * Department, University Hospital of Liege, Belgium | |
5 * | |
6 * This program is free software: you can redistribute it and/or | |
7 * modify it under the terms of the GNU General Public License as | |
8 * published by the Free Software Foundation, either version 3 of the | |
9 * License, or (at your option) any later version. | |
10 * | |
11 * In addition, as a special exception, the copyright holders of this | |
12 * program give permission to link the code of its release with the | |
13 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
14 * that use the same license as the "OpenSSL" library), and distribute | |
15 * the linked executables. You must obey the GNU General Public License | |
16 * in all respects for all of the code used other than "OpenSSL". If you | |
17 * modify file(s) with this exception, you may extend this exception to | |
18 * your version of the file(s), but you are not obligated to do so. If | |
19 * you do not wish to do so, delete this exception statement from your | |
20 * version. If you delete this exception statement from all source files | |
21 * in the program, then also delete it here. | |
22 * | |
23 * This program is distributed in the hope that it will be useful, but | |
24 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
26 * General Public License for more details. | |
27 * | |
28 * You should have received a copy of the GNU General Public License | |
29 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
30 **/ | |
31 | |
32 | |
33 #define _USE_MATH_DEFINES // To access M_PI in Visual Studio | |
34 #include <cmath> | |
35 | |
36 #include "CircleMeasureTracker.h" | |
37 | |
38 #include "../Viewport/CairoFont.h" | |
39 | |
40 #include <stdio.h> | |
41 | |
42 namespace OrthancStone | |
43 { | |
44 CircleMeasureTracker::CircleMeasureTracker(IStatusBar* statusBar, | |
45 const SliceGeometry& slice, | |
46 double x, | |
47 double y, | |
48 uint8_t red, | |
49 uint8_t green, | |
50 uint8_t blue, | |
51 unsigned int fontSize) : | |
52 statusBar_(statusBar), | |
53 slice_(slice), | |
54 x1_(x), | |
55 y1_(y), | |
56 x2_(x), | |
57 y2_(y), | |
58 fontSize_(fontSize) | |
59 { | |
60 color_[0] = red; | |
61 color_[1] = green; | |
62 color_[2] = blue; | |
63 } | |
64 | |
65 | |
66 void CircleMeasureTracker::Render(CairoContext& context, | |
67 double zoom) | |
68 { | |
69 double x = (x1_ + x2_) / 2.0; | |
70 double y = (y1_ + y2_) / 2.0; | |
71 | |
72 Vector tmp; | |
73 GeometryToolbox::AssignVector(tmp, x2_ - x1_, y2_ - y1_); | |
74 double r = boost::numeric::ublas::norm_2(tmp) / 2.0; | |
75 | |
76 context.SetSourceColor(color_[0], color_[1], color_[2]); | |
77 | |
78 cairo_t* cr = context.GetObject(); | |
79 cairo_save(cr); | |
80 cairo_set_line_width(cr, 2.0 / zoom); | |
81 cairo_translate(cr, x, y); | |
82 cairo_arc(cr, 0, 0, r, 0, 2 * M_PI); | |
83 cairo_stroke_preserve(cr); | |
84 cairo_stroke(cr); | |
85 cairo_restore(cr); | |
86 | |
87 if (fontSize_ != 0) | |
88 { | |
89 cairo_move_to(cr, x, y); | |
90 CairoFont font("sans-serif", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL); | |
91 font.Draw(context, FormatRadius(), static_cast<double>(fontSize_) / zoom); | |
92 } | |
93 } | |
94 | |
95 | |
96 double CircleMeasureTracker::GetRadius() const // In millimeters | |
97 { | |
98 Vector a = slice_.MapSliceToWorldCoordinates(x1_, y1_); | |
99 Vector b = slice_.MapSliceToWorldCoordinates(x2_, y2_); | |
100 return boost::numeric::ublas::norm_2(b - a) / 2.0; | |
101 } | |
102 | |
103 | |
104 std::string CircleMeasureTracker::FormatRadius() const | |
105 { | |
106 char buf[64]; | |
107 sprintf(buf, "%0.01f cm", GetRadius() / 10.0); | |
108 return buf; | |
109 } | |
110 | |
111 void CircleMeasureTracker::MouseMove(double x, | |
112 double y) | |
113 { | |
114 x2_ = x; | |
115 y2_ = y; | |
116 | |
117 if (statusBar_ != NULL) | |
118 { | |
119 statusBar_->SetMessage("Circle radius: " + FormatRadius()); | |
120 } | |
121 } | |
122 } |