Mercurial > hg > orthanc-stone
diff Framework/Scene2D/Internals/FixedPointAligner.cpp @ 596:b716763571ad
IPointerTracker
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Fri, 26 Apr 2019 17:05:14 +0200 |
parents | |
children | 7efa2543699d |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Framework/Scene2D/Internals/FixedPointAligner.cpp Fri Apr 26 17:05:14 2019 +0200 @@ -0,0 +1,51 @@ +/** + * Stone of Orthanc + * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics + * Department, University Hospital of Liege, Belgium + * Copyright (C) 2017-2019 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 "FixedPointAligner.h" + +namespace OrthancStone +{ + namespace Internals + { + FixedPointAligner::FixedPointAligner(Scene2D& scene, + const ScenePoint2D& p, + unsigned int canvasWidth, + unsigned int canvasHeight) : + scene_(scene) + { + canvas_ = ScenePoint2D(p.GetX() - static_cast<double>(canvasWidth) / 2.0, + p.GetY() - static_cast<double>(canvasHeight) / 2.0); + pivot_ = canvas_.Apply(scene_.GetCanvasToSceneTransform()); + } + + + void FixedPointAligner::Apply() + { + ScenePoint2D p = canvas_.Apply(scene_.GetCanvasToSceneTransform()); + + scene_.SetSceneToCanvasTransform( + AffineTransform2D::Combine( + scene_.GetSceneToCanvasTransform(), + AffineTransform2D::CreateOffset(p.GetX() - pivot_.GetX(), + p.GetY() - pivot_.GetY()))); + } + } +}