Mercurial > hg > orthanc-stone
view OrthancStone/Sources/Scene2D/RotateSceneTracker.cpp @ 1515:b750b6eab453
sync
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Tue, 07 Jul 2020 20:52:35 +0200 |
parents | 244ad1e4e76a |
children | 85e117739eca |
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/** * Stone of Orthanc * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics * Department, University Hospital of Liege, Belgium * Copyright (C) 2017-2020 Osimis S.A., Belgium * * This program is free software: you can redistribute it and/or * modify it under the terms of the GNU Affero General Public License * as published by the Free Software Foundation, either version 3 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. **/ #include "RotateSceneTracker.h" #include "../Scene2DViewport/ViewportController.h" namespace OrthancStone { RotateSceneTracker::RotateSceneTracker(boost::shared_ptr<IViewport> viewport, const PointerEvent& event) : OneGesturePointerTracker(viewport) , click_(event.GetMainPosition()) , aligner_(viewport, click_) , isFirst_(true) { std::unique_ptr<IViewport::ILock> lock(viewport_->Lock()); originalSceneToCanvas_ = lock->GetController().GetSceneToCanvasTransform(); } void RotateSceneTracker::PointerMove(const PointerEvent& event) { ScenePoint2D p = event.GetMainPosition(); double dx = p.GetX() - click_.GetX(); double dy = p.GetY() - click_.GetY(); if (std::abs(dx) > 5.0 || std::abs(dy) > 5.0) { double a = atan2(dy, dx); if (isFirst_) { referenceAngle_ = a; isFirst_ = false; } std::unique_ptr<IViewport::ILock> lock(viewport_->Lock()); lock->GetController().SetSceneToCanvasTransform( AffineTransform2D::Combine( AffineTransform2D::CreateRotation(a - referenceAngle_), originalSceneToCanvas_)); aligner_.Apply(); lock->Invalidate(); } } void RotateSceneTracker::Cancel() { // See remark above std::unique_ptr<IViewport::ILock> lock(viewport_->Lock()); lock->GetController().SetSceneToCanvasTransform(originalSceneToCanvas_); lock->Invalidate(); } }