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annotate OrthancStone/Sources/Scene2D/RotateSceneTracker.cpp @ 1760:e38b9875a969

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adaptation to change in API of Orthanc::HttpClient
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 04 May 2021 11:02:24 +0200
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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) 2017-2021 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Lesser General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Lesser General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Lesser General Public
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18 * License along with this program. If not, see
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19 * <http://www.gnu.org/licenses/>.
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20 **/
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22 #include "RotateSceneTracker.h"
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23 #include "../Scene2DViewport/ViewportController.h"
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25 namespace OrthancStone
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26 {
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27 RotateSceneTracker::RotateSceneTracker(boost::weak_ptr<IViewport> viewport,
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28 const PointerEvent& event) :
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29 OneGesturePointerTracker(viewport),
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30 click_(event.GetMainPosition()),
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31 aligner_(viewport, click_),
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32 referenceAngle_(0),
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33 isFirst_(true)
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34 {
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35 std::unique_ptr<IViewport::ILock> lock(GetViewportLock());
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36 originalSceneToCanvas_ = lock->GetController().GetSceneToCanvasTransform();
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37 }
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39
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40 void RotateSceneTracker::PointerMove(const PointerEvent& event)
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41 {
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42 ScenePoint2D p = event.GetMainPosition();
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43 double dx = p.GetX() - click_.GetX();
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44 double dy = p.GetY() - click_.GetY();
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46 if (std::abs(dx) > 5.0 ||
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47 std::abs(dy) > 5.0)
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48 {
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49 double a = atan2(dy, dx);
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51 if (isFirst_)
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52 {
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53 referenceAngle_ = a;
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54 isFirst_ = false;
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55 }
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56
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57 std::unique_ptr<IViewport::ILock> lock(GetViewportLock());
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59 lock->GetController().SetSceneToCanvasTransform(
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60 AffineTransform2D::Combine(
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61 AffineTransform2D::CreateRotation(a - referenceAngle_),
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62 originalSceneToCanvas_));
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63 aligner_.Apply();
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64 lock->Invalidate();
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65 }
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66 }
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69 void RotateSceneTracker::Cancel()
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70 {
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71 // See remark above
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72 std::unique_ptr<IViewport::ILock> lock(GetViewportLock());
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73 lock->GetController().SetSceneToCanvasTransform(originalSceneToCanvas_);
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74 lock->Invalidate();
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75 }
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76 }