Mercurial > hg > orthanc-stone
comparison OrthancStone/Sources/Scene2D/Internals/CompositorHelper.cpp @ 1512:244ad1e4e76a
reorganization of folders
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Tue, 07 Jul 2020 16:21:02 +0200 |
parents | Framework/Scene2D/Internals/CompositorHelper.cpp@30deba7bc8e2 |
children | 4fb8fdf03314 |
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1511:9dfeee74c1e6 | 1512:244ad1e4e76a |
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1 /** | |
2 * Stone of Orthanc | |
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
4 * Department, University Hospital of Liege, Belgium | |
5 * Copyright (C) 2017-2020 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 "CompositorHelper.h" | |
23 | |
24 #include <OrthancException.h> | |
25 | |
26 namespace OrthancStone | |
27 { | |
28 namespace Internals | |
29 { | |
30 class CompositorHelper::Item : public boost::noncopyable | |
31 { | |
32 private: | |
33 std::unique_ptr<ILayerRenderer> renderer_; | |
34 const ISceneLayer& layer_; | |
35 uint64_t layerIdentifier_; | |
36 uint64_t lastRevision_; | |
37 | |
38 public: | |
39 Item(ILayerRenderer* renderer, // Takes ownership | |
40 const ISceneLayer& layer, | |
41 uint64_t layerIdentifier) : | |
42 renderer_(renderer), | |
43 layer_(layer), | |
44 layerIdentifier_(layerIdentifier), | |
45 lastRevision_(layer.GetRevision()) | |
46 { | |
47 if (renderer == NULL) | |
48 { | |
49 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
50 } | |
51 } | |
52 | |
53 ILayerRenderer& GetRenderer() const | |
54 { | |
55 assert(renderer_.get() != NULL); | |
56 return *renderer_; | |
57 } | |
58 | |
59 const ISceneLayer& GetLayer() const | |
60 { | |
61 return layer_; | |
62 } | |
63 | |
64 uint64_t GetLayerIdentifier() const | |
65 { | |
66 return layerIdentifier_; | |
67 } | |
68 | |
69 uint64_t GetLastRevision() const | |
70 { | |
71 return lastRevision_; | |
72 } | |
73 | |
74 void UpdateRenderer() | |
75 { | |
76 assert(renderer_.get() != NULL); | |
77 renderer_->Update(layer_); | |
78 lastRevision_ = layer_.GetRevision(); | |
79 } | |
80 }; | |
81 | |
82 | |
83 void CompositorHelper::Visit(const Scene2D& scene, | |
84 const ISceneLayer& layer, | |
85 uint64_t layerIdentifier, | |
86 int depth) | |
87 { | |
88 // "Visit()" is only applied to layers existing in the scene | |
89 assert(scene.HasLayer(depth)); | |
90 | |
91 Content::iterator found = content_.find(depth); | |
92 | |
93 assert(found == content_.end() || | |
94 found->second != NULL); | |
95 | |
96 if (found == content_.end() || | |
97 found->second->GetLayerIdentifier() != layerIdentifier) | |
98 { | |
99 // This is the first time this layer is rendered, or the layer | |
100 // is not the same as before | |
101 if (found != content_.end()) | |
102 { | |
103 delete found->second; | |
104 content_.erase(found); | |
105 } | |
106 | |
107 // the returned renderer can be NULL in case of an unknown layer | |
108 // or a NullLayer | |
109 std::unique_ptr<ILayerRenderer> renderer(factory_.Create(layer)); | |
110 | |
111 if (renderer.get() != NULL) | |
112 { | |
113 renderer->Render(sceneTransform_, canvasWidth_, canvasHeight_); | |
114 content_[depth] = new Item(renderer.release(), layer, layerIdentifier); | |
115 } | |
116 } | |
117 else | |
118 { | |
119 // This layer has already been rendered | |
120 assert(found->second->GetLastRevision() <= layer.GetRevision()); | |
121 | |
122 if (found->second->GetLastRevision() < layer.GetRevision()) | |
123 { | |
124 found->second->UpdateRenderer(); | |
125 } | |
126 | |
127 found->second->GetRenderer().Render(sceneTransform_, canvasWidth_, canvasHeight_); | |
128 } | |
129 | |
130 // Check invariants | |
131 assert(content_.find(depth) == content_.end() || | |
132 (content_[depth]->GetLayerIdentifier() == layerIdentifier && | |
133 content_[depth]->GetLastRevision() == layer.GetRevision())); | |
134 } | |
135 | |
136 | |
137 CompositorHelper::~CompositorHelper() | |
138 { | |
139 for (Content::iterator it = content_.begin(); it != content_.end(); ++it) | |
140 { | |
141 assert(it->second != NULL); | |
142 delete it->second; | |
143 } | |
144 } | |
145 | |
146 | |
147 void CompositorHelper::Refresh(const Scene2D& scene, | |
148 unsigned int canvasWidth, | |
149 unsigned int canvasHeight) | |
150 { | |
151 /** | |
152 * Safeguard mechanism to enforce the fact that the same scene | |
153 * is always used with the compositor. Note that the safeguard | |
154 * is not 100% bullet-proof, as a new scene might reuse the same | |
155 * address as a previous scene. | |
156 **/ | |
157 if (lastScene_ != NULL && | |
158 lastScene_ != &scene) | |
159 { | |
160 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls, | |
161 "ICompositor::ResetScene() should have been called"); | |
162 } | |
163 | |
164 lastScene_ = &scene; | |
165 | |
166 // Bring coordinate (0,0) to the center of the canvas | |
167 AffineTransform2D offset = AffineTransform2D::CreateOffset( | |
168 static_cast<double>(canvasWidth) / 2.0, | |
169 static_cast<double>(canvasHeight) / 2.0); | |
170 | |
171 sceneTransform_ = AffineTransform2D::Combine(offset, scene.GetSceneToCanvasTransform()); | |
172 canvasWidth_ = canvasWidth; | |
173 canvasHeight_ = canvasHeight; | |
174 scene.Apply(*this); | |
175 } | |
176 } | |
177 } |