Mercurial > hg > orthanc-stone
annotate Framework/Toolbox/ViewportGeometry.h @ 109:53bd9277b025 wasm
using the Extent class
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 14 Jun 2017 15:34:08 +0200 |
| parents | c2dc924f1a63 |
| children | 7665ccbf33db |
| 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 | |
|
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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" | |
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25 #include "../Toolbox/Extent.h" |
| 0 | 26 |
| 27 namespace OrthancStone | |
| 28 { | |
| 29 class ViewportGeometry | |
| 30 { | |
| 31 private: | |
| 32 // Extent of the scene (in world units) | |
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33 Extent sceneExtent_; |
| 0 | 34 |
| 35 // Size of the display (in pixels) | |
| 36 unsigned int width_; | |
| 37 unsigned int height_; | |
| 38 | |
| 39 // Zoom/pan | |
| 40 double zoom_; | |
| 41 double panX_; // In pixels (display units) | |
| 42 double panY_; | |
| 43 | |
| 44 cairo_matrix_t transform_; // Scene-to-display transformation | |
| 45 | |
| 46 void ComputeTransform(); | |
| 47 | |
| 48 public: | |
| 49 ViewportGeometry(); | |
| 50 | |
| 51 void SetDisplaySize(unsigned int width, | |
| 52 unsigned int height); | |
| 53 | |
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54 void SetSceneExtent(const Extent& extent); |
| 0 | 55 |
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56 const Extent& GetSceneExtent() const |
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57 { |
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58 return sceneExtent_; |
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59 } |
| 0 | 60 |
| 61 void MapDisplayToScene(double& sceneX /* out */, | |
| 62 double& sceneY /* out */, | |
| 63 double x, | |
| 64 double y) const; | |
| 65 | |
| 66 void MapSceneToDisplay(int& displayX /* out */, | |
| 67 int& displayY /* out */, | |
| 68 double x, | |
| 69 double y) const; | |
| 70 | |
| 71 unsigned int GetDisplayWidth() const | |
| 72 { | |
| 73 return width_; | |
| 74 } | |
| 75 | |
| 76 unsigned int GetDisplayHeight() const | |
| 77 { | |
| 78 return height_; | |
| 79 } | |
| 80 | |
| 81 double GetZoom() const | |
| 82 { | |
| 83 return zoom_; | |
| 84 } | |
| 85 | |
| 86 void SetDefaultView(); | |
| 87 | |
| 88 void ApplyTransform(CairoContext& context) const; | |
| 89 | |
| 90 void GetPan(double& x, | |
| 91 double& y) const; | |
| 92 | |
| 93 void SetPan(double x, | |
| 94 double y); | |
| 95 | |
| 96 void SetZoom(double zoom); | |
| 97 }; | |
| 98 } |