Mercurial > hg > orthanc-stone
annotate Framework/Scene2D/Internals/CompositorHelper.cpp @ 596:b716763571ad
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author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Fri, 26 Apr 2019 17:05:14 +0200 |
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585 | 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 "CompositorHelper.h" | |
23 | |
24 #include <Core/OrthancException.h> | |
25 | |
26 namespace OrthancStone | |
27 { | |
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28 namespace Internals |
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30 class CompositorHelper::Item : public boost::noncopyable |
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31 { |
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32 private: |
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33 std::auto_ptr<ILayerRenderer> renderer_; |
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34 const ISceneLayer& layer_; |
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35 uint64_t lastRevision_; |
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36 |
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37 public: |
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38 Item(ILayerRenderer* renderer, // Takes ownership |
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39 const ISceneLayer& layer) : |
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40 renderer_(renderer), |
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41 layer_(layer), |
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42 lastRevision_(layer.GetRevision()) |
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43 { |
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44 if (renderer == NULL) |
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45 { |
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46 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); |
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47 } |
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48 } |
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49 |
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50 ILayerRenderer& GetRenderer() const |
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51 { |
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52 assert(renderer_.get() != NULL); |
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53 return *renderer_; |
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54 } |
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55 |
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56 const ISceneLayer& GetLayer() const |
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57 { |
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58 return layer_; |
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59 } |
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60 |
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61 uint64_t GetLastRevision() const |
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62 { |
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63 return lastRevision_; |
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64 } |
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65 |
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66 void UpdateRenderer() |
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67 { |
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68 assert(renderer_.get() != NULL); |
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69 renderer_->Update(layer_); |
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70 lastRevision_ = layer_.GetRevision(); |
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71 } |
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72 }; |
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73 |
585 | 74 |
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75 void CompositorHelper::Visit(const ISceneLayer& layer, |
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76 int depth) |
585 | 77 { |
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78 Content::iterator found = content_.find(depth); |
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79 |
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80 assert(found == content_.end() || |
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81 found->second != NULL); |
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82 |
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83 if (found == content_.end() || |
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84 &found->second->GetLayer() != &layer) |
585 | 85 { |
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86 // This is the first time this layer is rendered, or the layer |
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87 // is not the same as before |
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88 if (found != content_.end()) |
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89 { |
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90 delete found->second; |
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91 content_.erase(found); |
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92 } |
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93 |
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94 std::auto_ptr<ILayerRenderer> renderer(factory_.Create(layer)); |
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95 |
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96 if (renderer.get() != NULL) |
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97 { |
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98 renderer->Render(sceneTransform_); |
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99 content_[depth] = new Item(renderer.release(), layer); |
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100 } |
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101 } |
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102 else |
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103 { |
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104 // This layer has already been rendered |
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105 if (found->second->GetLastRevision() < layer.GetRevision()) |
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106 { |
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107 found->second->UpdateRenderer(); |
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108 } |
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109 |
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110 found->second->GetRenderer().Render(sceneTransform_); |
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111 } |
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112 |
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113 // Check invariants |
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114 assert(content_.find(depth) == content_.end() || |
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115 (&content_[depth]->GetLayer() == &layer && |
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116 content_[depth]->GetLastRevision() == layer.GetRevision())); |
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117 } |
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118 |
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119 |
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120 CompositorHelper::~CompositorHelper() |
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121 { |
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122 for (Content::iterator it = content_.begin(); it != content_.end(); ++it) |
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123 { |
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124 assert(it->second != NULL); |
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125 delete it->second; |
585 | 126 } |
127 } | |
128 | |
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129 |
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130 void CompositorHelper::Refresh(unsigned int canvasWidth, |
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131 unsigned int canvasHeight) |
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133 // Bring coordinate (0,0) to the center of the canvas |
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134 AffineTransform2D offset = AffineTransform2D::CreateOffset( |
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135 static_cast<double>(canvasWidth) / 2.0, |
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136 static_cast<double>(canvasHeight) / 2.0); |
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138 sceneTransform_ = AffineTransform2D::Combine(offset, scene_.GetSceneToCanvasTransform()); |
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139 scene_.Apply(*this); |
585 | 140 } |
141 } | |
142 } |