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comparison Framework/Layers/CircleMeasureTracker.cpp @ 0:351ab0da0150

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initial commit
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 14 Oct 2016 15:34:11 +0200
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children 7207a407bcd8
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-1:000000000000 0:351ab0da0150
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 }