Mercurial > hg > orthanc-stone
annotate Framework/Toolbox/ViewportGeometry.h @ 45:ecd96e563929 wasm
new wasm branch
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 19 Apr 2017 10:28:08 +0200 |
parents | 7207a407bcd8 |
children | 28956ed68280 |
rev | line source |
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0 | 1 /** |
2 * Stone of Orthanc | |
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
4 * Department, University Hospital of Liege, Belgium | |
40
7207a407bcd8
shared copyright with osimis
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
0
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changeset
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5 * Copyright (C) 2017 Osimis, Belgium |
0 | 6 * |
7 * This program is free software: you can redistribute it and/or | |
8 * modify it under the terms of the GNU General Public License as | |
9 * published by the Free Software Foundation, either version 3 of the | |
10 * License, or (at your option) any later version. | |
11 * | |
12 * In addition, as a special exception, the copyright holders of this | |
13 * program give permission to link the code of its release with the | |
14 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
15 * that use the same license as the "OpenSSL" library), and distribute | |
16 * the linked executables. You must obey the GNU General Public License | |
17 * in all respects for all of the code used other than "OpenSSL". If you | |
18 * modify file(s) with this exception, you may extend this exception to | |
19 * your version of the file(s), but you are not obligated to do so. If | |
20 * you do not wish to do so, delete this exception statement from your | |
21 * version. If you delete this exception statement from all source files | |
22 * in the program, then also delete it here. | |
23 * | |
24 * This program is distributed in the hope that it will be useful, but | |
25 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
27 * General Public License for more details. | |
28 * | |
29 * You should have received a copy of the GNU General Public License | |
30 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
31 **/ | |
32 | |
33 | |
34 #pragma once | |
35 | |
36 #include "../Viewport/CairoContext.h" | |
37 | |
38 namespace OrthancStone | |
39 { | |
40 // Not thread-safe | |
41 class ViewportGeometry | |
42 { | |
43 private: | |
44 // Extent of the scene (in world units) | |
45 double x1_; | |
46 double y1_; | |
47 double x2_; | |
48 double y2_; | |
49 | |
50 // Size of the display (in pixels) | |
51 unsigned int width_; | |
52 unsigned int height_; | |
53 | |
54 // Zoom/pan | |
55 double zoom_; | |
56 double panX_; // In pixels (display units) | |
57 double panY_; | |
58 | |
59 cairo_matrix_t transform_; // Scene-to-display transformation | |
60 | |
61 void ComputeTransform(); | |
62 | |
63 public: | |
64 ViewportGeometry(); | |
65 | |
66 void SetDisplaySize(unsigned int width, | |
67 unsigned int height); | |
68 | |
69 void SetSceneExtent(double x1, | |
70 double y1, | |
71 double x2, | |
72 double y2); | |
73 | |
74 void GetSceneExtent(double& x1, | |
75 double& y1, | |
76 double& x2, | |
77 double& y2) const; | |
78 | |
79 void MapDisplayToScene(double& sceneX /* out */, | |
80 double& sceneY /* out */, | |
81 double x, | |
82 double y) const; | |
83 | |
84 void MapSceneToDisplay(int& displayX /* out */, | |
85 int& displayY /* out */, | |
86 double x, | |
87 double y) const; | |
88 | |
89 unsigned int GetDisplayWidth() const | |
90 { | |
91 return width_; | |
92 } | |
93 | |
94 unsigned int GetDisplayHeight() const | |
95 { | |
96 return height_; | |
97 } | |
98 | |
99 double GetZoom() const | |
100 { | |
101 return zoom_; | |
102 } | |
103 | |
104 void SetDefaultView(); | |
105 | |
106 void ApplyTransform(CairoContext& context) const; | |
107 | |
108 void GetPan(double& x, | |
109 double& y) const; | |
110 | |
111 void SetPan(double x, | |
112 double y); | |
113 | |
114 void SetZoom(double zoom); | |
115 }; | |
116 } |