Mercurial > hg > orthanc-stone
annotate Framework/Toolbox/ViewportGeometry.h @ 409:99c9b3238008
AffineTransform2D
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Mon, 12 Nov 2018 15:38:11 +0100 |
parents | f5d5814a41a0 |
children | b70e9be013e4 |
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 | |
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5 * Copyright (C) 2017-2018 Osimis S.A., Belgium |
0 | 6 * |
7 * This program is free software: you can redistribute it and/or | |
47 | 8 * modify it under the terms of the GNU Affero General Public License |
9 * as published by the Free Software Foundation, either version 3 of | |
10 * the License, or (at your option) any later version. | |
0 | 11 * |
12 * This program is distributed in the hope that it will be useful, but | |
13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
47 | 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
15 * Affero General Public License for more details. | |
16 * | |
17 * You should have received a copy of the GNU Affero General Public License | |
0 | 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
19 **/ | |
20 | |
21 | |
22 #pragma once | |
23 | |
24 #include "../Viewport/CairoContext.h" | |
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25 #include "Extent2D.h" |
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26 #include "LinearAlgebra.h" |
0 | 27 |
28 namespace OrthancStone | |
29 { | |
30 class ViewportGeometry | |
31 { | |
32 private: | |
33 // Extent of the scene (in world units) | |
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34 Extent2D sceneExtent_; |
0 | 35 |
36 // Size of the display (in pixels) | |
37 unsigned int width_; | |
38 unsigned int height_; | |
39 | |
40 // Zoom/pan | |
41 double zoom_; | |
42 double panX_; // In pixels (display units) | |
43 double panY_; | |
44 | |
45 cairo_matrix_t transform_; // Scene-to-display transformation | |
46 | |
47 void ComputeTransform(); | |
48 | |
49 public: | |
50 ViewportGeometry(); | |
51 | |
52 void SetDisplaySize(unsigned int width, | |
53 unsigned int height); | |
54 | |
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55 void SetSceneExtent(const Extent2D& extent); |
0 | 56 |
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57 const Extent2D& GetSceneExtent() const |
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58 { |
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59 return sceneExtent_; |
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60 } |
0 | 61 |
62 void MapDisplayToScene(double& sceneX /* out */, | |
63 double& sceneY /* out */, | |
64 double x, | |
65 double y) const; | |
66 | |
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67 void MapPixelCenterToScene(double& sceneX /* out */, |
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68 double& sceneY /* out */, |
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69 int x, |
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70 int y) const; |
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71 |
0 | 72 void MapSceneToDisplay(int& displayX /* out */, |
73 int& displayY /* out */, | |
74 double x, | |
75 double y) const; | |
76 | |
77 unsigned int GetDisplayWidth() const | |
78 { | |
79 return width_; | |
80 } | |
81 | |
82 unsigned int GetDisplayHeight() const | |
83 { | |
84 return height_; | |
85 } | |
86 | |
87 double GetZoom() const | |
88 { | |
89 return zoom_; | |
90 } | |
91 | |
330 | 92 void FitContent(); |
0 | 93 |
94 void ApplyTransform(CairoContext& context) const; | |
95 | |
96 void GetPan(double& x, | |
97 double& y) const; | |
98 | |
99 void SetPan(double x, | |
100 double y); | |
101 | |
102 void SetZoom(double zoom); | |
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103 |
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104 Matrix GetMatrix() const; |
0 | 105 }; |
106 } |