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annotate OrthancStone/Sources/Scene2D/RotateSceneTracker.cpp @ 2114:c23eef785569

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update year to 2024
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 24 Jan 2024 16:44:04 +0100
parents 07964689cb0b
children 16c01cc201e7
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1 /**
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2 * Stone of Orthanc
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2024 Osimis S.A., Belgium
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6 * Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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7 *
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8 * This program is free software: you can redistribute it and/or
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9 * modify it under the terms of the GNU Lesser General Public License
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10 * as published by the Free Software Foundation, either version 3 of
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11 * the License, or (at your option) any later version.
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12 *
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13 * This program is distributed in the hope that it will be useful, but
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14 * WITHOUT ANY WARRANTY; without even the implied warranty of
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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16 * Lesser General Public License for more details.
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17 *
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18 * You should have received a copy of the GNU Lesser General Public
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19 * License along with this program. If not, see
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20 * <http://www.gnu.org/licenses/>.
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21 **/
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23 #include "RotateSceneTracker.h"
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24
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25 #include "../Scene2DViewport/ViewportController.h"
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26 #include "../Viewport/ViewportLocker.h"
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28 namespace OrthancStone
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29 {
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30 RotateSceneTracker::RotateSceneTracker(boost::weak_ptr<IViewport> viewport,
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31 const PointerEvent& event) :
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32 viewport_(viewport),
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33 click_(event.GetMainPosition()),
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34 referenceAngle_(0),
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35 isFirst_(true)
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36 {
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37 ViewportLocker locker(viewport_);
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38
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39 if (locker.IsValid())
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40 {
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41 aligner_.reset(new Internals::FixedPointAligner(locker.GetController(), click_));
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42 originalSceneToCanvas_ = locker.GetController().GetSceneToCanvasTransform();
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43 }
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44 }
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46
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47 void RotateSceneTracker::PointerMove(const PointerEvent& event,
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48 const Scene2D& scene)
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49 {
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50 if (aligner_.get() != NULL)
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51 {
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52 ScenePoint2D p = event.GetMainPosition();
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53 double dx = p.GetX() - click_.GetX();
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54 double dy = p.GetY() - click_.GetY();
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55
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56 if (std::abs(dx) > 5.0 ||
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57 std::abs(dy) > 5.0)
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58 {
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59 double a = atan2(dy, dx);
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60
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61 if (isFirst_)
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62 {
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63 referenceAngle_ = a;
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64 isFirst_ = false;
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65 }
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66
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67 ViewportLocker locker(viewport_);
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68
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69 if (locker.IsValid())
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70 {
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71 locker.GetController().SetSceneToCanvasTransform(
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72 AffineTransform2D::Combine(
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73 AffineTransform2D::CreateRotation(a - referenceAngle_),
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74 originalSceneToCanvas_));
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75 aligner_->Apply(locker.GetController());
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76 locker.Invalidate();
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77 }
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78 }
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79 }
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80 }
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81
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82
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83 void RotateSceneTracker::Cancel(const Scene2D& scene)
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84 {
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85 ViewportLocker locker(viewport_);
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87 if (locker.IsValid())
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88 {
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89 locker.GetController().SetSceneToCanvasTransform(originalSceneToCanvas_);
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90 locker.Invalidate();
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91 }
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92 }
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93 }