Mercurial > hg > orthanc-stone
annotate Framework/Toolbox/ViewportGeometry.h @ 47:28956ed68280
agpl license
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Thu, 27 Apr 2017 11:00:15 +0200 |
| parents | 7207a407bcd8 |
| children | c2dc924f1a63 4cff7b1ed31d |
| rev | line source |
|---|---|
| 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
diff
changeset
|
5 * Copyright (C) 2017 Osimis, 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" | |
| 25 | |
| 26 namespace OrthancStone | |
| 27 { | |
| 28 // Not thread-safe | |
| 29 class ViewportGeometry | |
| 30 { | |
| 31 private: | |
| 32 // Extent of the scene (in world units) | |
| 33 double x1_; | |
| 34 double y1_; | |
| 35 double x2_; | |
| 36 double y2_; | |
| 37 | |
| 38 // Size of the display (in pixels) | |
| 39 unsigned int width_; | |
| 40 unsigned int height_; | |
| 41 | |
| 42 // Zoom/pan | |
| 43 double zoom_; | |
| 44 double panX_; // In pixels (display units) | |
| 45 double panY_; | |
| 46 | |
| 47 cairo_matrix_t transform_; // Scene-to-display transformation | |
| 48 | |
| 49 void ComputeTransform(); | |
| 50 | |
| 51 public: | |
| 52 ViewportGeometry(); | |
| 53 | |
| 54 void SetDisplaySize(unsigned int width, | |
| 55 unsigned int height); | |
| 56 | |
| 57 void SetSceneExtent(double x1, | |
| 58 double y1, | |
| 59 double x2, | |
| 60 double y2); | |
| 61 | |
| 62 void GetSceneExtent(double& x1, | |
| 63 double& y1, | |
| 64 double& x2, | |
| 65 double& y2) const; | |
| 66 | |
| 67 void MapDisplayToScene(double& sceneX /* out */, | |
| 68 double& sceneY /* out */, | |
| 69 double x, | |
| 70 double y) const; | |
| 71 | |
| 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 | |
| 92 void SetDefaultView(); | |
| 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); | |
| 103 }; | |
| 104 } |