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comparison Framework/Scene2D/Internals/FixedPointAligner.cpp @ 596:b716763571ad

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 26 Apr 2019 17:05:14 +0200
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children 7efa2543699d
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595:6e471e6cf09b 596:b716763571ad
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
22 #include "FixedPointAligner.h"
23
24 namespace OrthancStone
25 {
26 namespace Internals
27 {
28 FixedPointAligner::FixedPointAligner(Scene2D& scene,
29 const ScenePoint2D& p,
30 unsigned int canvasWidth,
31 unsigned int canvasHeight) :
32 scene_(scene)
33 {
34 canvas_ = ScenePoint2D(p.GetX() - static_cast<double>(canvasWidth) / 2.0,
35 p.GetY() - static_cast<double>(canvasHeight) / 2.0);
36 pivot_ = canvas_.Apply(scene_.GetCanvasToSceneTransform());
37 }
38
39
40 void FixedPointAligner::Apply()
41 {
42 ScenePoint2D p = canvas_.Apply(scene_.GetCanvasToSceneTransform());
43
44 scene_.SetSceneToCanvasTransform(
45 AffineTransform2D::Combine(
46 scene_.GetSceneToCanvasTransform(),
47 AffineTransform2D::CreateOffset(p.GetX() - pivot_.GetX(),
48 p.GetY() - pivot_.GetY())));
49 }
50 }
51 }