Mercurial > hg > orthanc-stone
annotate Framework/Scene2D/Scene2D.cpp @ 600:6129b1e5ba42
BasicScene SDL sample
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Sat, 27 Apr 2019 12:38:25 +0200 |
parents | e36e69a380a5 |
children | 03c4b998fcd0 |
rev | line source |
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582 | 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 "Scene2D.h" | |
23 | |
24 #include <Core/OrthancException.h> | |
25 | |
26 | |
27 namespace OrthancStone | |
28 { | |
29 Scene2D::Scene2D(const Scene2D& other) : | |
30 sceneToCanvas_(other.sceneToCanvas_), | |
31 canvasToScene_(other.canvasToScene_) | |
32 { | |
33 for (Content::const_iterator it = other.content_.begin(); | |
34 it != other.content_.end(); ++it) | |
35 { | |
36 content_[it->first] = it->second->Clone(); | |
37 } | |
38 } | |
39 | |
40 | |
41 Scene2D::~Scene2D() | |
42 { | |
43 for (Content::iterator it = content_.begin(); | |
44 it != content_.end(); ++it) | |
45 { | |
46 assert(it->second != NULL); | |
47 delete it->second; | |
48 } | |
49 } | |
50 | |
51 | |
52 void Scene2D::SetLayer(int depth, | |
53 ISceneLayer* layer) // Takes ownership | |
54 { | |
55 std::auto_ptr<ISceneLayer> protection(layer); | |
56 | |
57 if (layer == NULL) | |
58 { | |
59 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
60 } | |
61 | |
62 Content::iterator found = content_.find(depth); | |
63 | |
64 if (found == content_.end()) | |
65 { | |
66 content_[depth] = protection.release(); | |
67 } | |
68 else | |
69 { | |
70 assert(found->second != NULL); | |
71 delete found->second; | |
72 found->second = protection.release(); | |
73 } | |
74 } | |
75 | |
76 | |
77 void Scene2D::DeleteLayer(int depth) | |
78 { | |
79 Content::iterator found = content_.find(depth); | |
80 | |
81 if (found != content_.end()) | |
82 { | |
83 assert(found->second != NULL); | |
84 delete found->second; | |
85 content_.erase(found); | |
86 } | |
87 } | |
88 | |
89 | |
600
6129b1e5ba42
BasicScene SDL sample
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
582
diff
changeset
|
90 void Scene2D::Apply(IVisitor& visitor) const |
582 | 91 { |
92 for (Content::const_iterator it = content_.begin(); | |
93 it != content_.end(); ++it) | |
94 { | |
95 assert(it->second != NULL); | |
96 visitor.Visit(*it->second, it->first); | |
97 } | |
98 } | |
99 | |
100 | |
101 void Scene2D::SetSceneToCanvasTransform(const AffineTransform2D& transform) | |
102 { | |
103 // Make sure the transform is invertible before making any change | |
104 AffineTransform2D inverse = AffineTransform2D::Invert(transform); | |
105 | |
106 sceneToCanvas_ = transform; | |
107 canvasToScene_ = inverse; | |
108 } | |
109 | |
110 | |
111 void Scene2D::FitContent(unsigned int canvasWidth, | |
112 unsigned int canvasHeight) | |
113 { | |
114 Extent2D extent; | |
115 | |
116 for (Content::const_iterator it = content_.begin(); | |
117 it != content_.end(); ++it) | |
118 { | |
119 assert(it->second != NULL); | |
120 | |
121 Extent2D tmp; | |
122 if (it->second->GetBoundingBox(tmp)) | |
123 { | |
124 extent.Union(tmp); | |
125 } | |
126 } | |
127 | |
128 if (!extent.IsEmpty()) | |
129 { | |
130 double zoomX = static_cast<double>(canvasWidth) / extent.GetWidth(); | |
131 double zoomY = static_cast<double>(canvasHeight) / extent.GetHeight(); | |
132 | |
133 double zoom = std::min(zoomX, zoomY); | |
134 if (LinearAlgebra::IsCloseToZero(zoom)) | |
135 { | |
136 zoom = 1; | |
137 } | |
138 | |
139 double panX = extent.GetCenterX(); | |
140 double panY = extent.GetCenterY(); | |
141 | |
142 // Bring the center of the scene to (0,0) | |
143 AffineTransform2D t1 = AffineTransform2D::CreateOffset(-panX, -panY); | |
144 | |
145 // Scale the scene | |
146 AffineTransform2D t2 = AffineTransform2D::CreateScaling(zoom, zoom); | |
147 | |
148 SetSceneToCanvasTransform(AffineTransform2D::Combine(t2, t1)); | |
149 } | |
150 } | |
151 } |