Mercurial > hg > orthanc-stone
comparison Framework/Toolbox/ViewportGeometry.h @ 0:351ab0da0150
initial commit
author | Sebastien Jodogne <s.jodogne@gmail.com> |
---|---|
date | Fri, 14 Oct 2016 15:34:11 +0200 |
parents | |
children | 7207a407bcd8 |
comparison
equal
deleted
inserted
replaced
-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 #pragma once | |
34 | |
35 #include "../Viewport/CairoContext.h" | |
36 | |
37 namespace OrthancStone | |
38 { | |
39 // Not thread-safe | |
40 class ViewportGeometry | |
41 { | |
42 private: | |
43 // Extent of the scene (in world units) | |
44 double x1_; | |
45 double y1_; | |
46 double x2_; | |
47 double y2_; | |
48 | |
49 // Size of the display (in pixels) | |
50 unsigned int width_; | |
51 unsigned int height_; | |
52 | |
53 // Zoom/pan | |
54 double zoom_; | |
55 double panX_; // In pixels (display units) | |
56 double panY_; | |
57 | |
58 cairo_matrix_t transform_; // Scene-to-display transformation | |
59 | |
60 void ComputeTransform(); | |
61 | |
62 public: | |
63 ViewportGeometry(); | |
64 | |
65 void SetDisplaySize(unsigned int width, | |
66 unsigned int height); | |
67 | |
68 void SetSceneExtent(double x1, | |
69 double y1, | |
70 double x2, | |
71 double y2); | |
72 | |
73 void GetSceneExtent(double& x1, | |
74 double& y1, | |
75 double& x2, | |
76 double& y2) const; | |
77 | |
78 void MapDisplayToScene(double& sceneX /* out */, | |
79 double& sceneY /* out */, | |
80 double x, | |
81 double y) const; | |
82 | |
83 void MapSceneToDisplay(int& displayX /* out */, | |
84 int& displayY /* out */, | |
85 double x, | |
86 double y) const; | |
87 | |
88 unsigned int GetDisplayWidth() const | |
89 { | |
90 return width_; | |
91 } | |
92 | |
93 unsigned int GetDisplayHeight() const | |
94 { | |
95 return height_; | |
96 } | |
97 | |
98 double GetZoom() const | |
99 { | |
100 return zoom_; | |
101 } | |
102 | |
103 void SetDefaultView(); | |
104 | |
105 void ApplyTransform(CairoContext& context) const; | |
106 | |
107 void GetPan(double& x, | |
108 double& y) const; | |
109 | |
110 void SetPan(double x, | |
111 double y); | |
112 | |
113 void SetZoom(double zoom); | |
114 }; | |
115 } |