Mercurial > hg > orthanc-stone
annotate Framework/Scene2D/RotateSceneTracker.cpp @ 1223:04fd875b91f4
fix
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Sat, 07 Dec 2019 18:41:54 +0100 |
| parents | 769249e1f3b4 |
| children | 2d8ab34c8c91 |
| rev | line source |
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| 596 | 1 /** |
| 2 * Stone of Orthanc | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
| 5 * Copyright (C) 2017-2019 Osimis S.A., Belgium | |
| 6 * | |
| 7 * This program is free software: you can redistribute it and/or | |
| 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. | |
| 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 | |
| 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 | |
| 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 19 **/ | |
| 20 | |
| 21 #include "RotateSceneTracker.h" | |
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22 #include "../Scene2DViewport/ViewportController.h" |
| 596 | 23 |
| 24 namespace OrthancStone | |
| 25 { | |
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26 RotateSceneTracker::RotateSceneTracker(boost::weak_ptr<ViewportController> controllerW, |
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27 const PointerEvent& event) |
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28 : OneGesturePointerTracker(controllerW) |
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29 , click_(event.GetMainPosition()) |
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30 , aligner_(controllerW, click_) |
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31 , isFirst_(true) |
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32 , originalSceneToCanvas_(GetController()->GetSceneToCanvasTransform()) |
| 596 | 33 { |
| 34 } | |
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35 |
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36 void RotateSceneTracker::PointerMove(const PointerEvent& event) |
| 596 | 37 { |
| 38 ScenePoint2D p = event.GetMainPosition(); | |
| 39 double dx = p.GetX() - click_.GetX(); | |
| 40 double dy = p.GetY() - click_.GetY(); | |
| 41 | |
| 42 if (std::abs(dx) > 5.0 || | |
| 43 std::abs(dy) > 5.0) | |
| 44 { | |
| 45 double a = atan2(dy, dx); | |
| 46 | |
| 47 if (isFirst_) | |
| 48 { | |
| 49 referenceAngle_ = a; | |
| 50 isFirst_ = false; | |
| 51 } | |
| 52 | |
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53 // The controller is a weak pointer. It could be deleted when the |
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54 // tracker is still alive (for instance, because of a lost WebGL |
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55 // context that triggers a recreation of the viewport) |
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56 if(GetController().get() != NULL) |
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57 { |
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58 GetController()->SetSceneToCanvasTransform( |
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59 AffineTransform2D::Combine( |
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60 AffineTransform2D::CreateRotation(a - referenceAngle_), |
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61 originalSceneToCanvas_)); |
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62 |
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63 aligner_.Apply(); |
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64 } |
| 596 | 65 } |
| 66 } | |
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67 |
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68 void RotateSceneTracker::Cancel() |
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69 { |
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70 // See remark above |
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71 if(GetController().get() != NULL) |
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72 { |
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73 GetController()->SetSceneToCanvasTransform(originalSceneToCanvas_); |
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74 } |
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75 } |
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76 |
| 596 | 77 } |