Mercurial > hg > orthanc-stone

annotate Framework/Scene2D/Internals/CompositorHelper.cpp @ 700:059e1fd05fd6 refactor-viewport-controller

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Introduced the ViewportController that sits between the application and the Scene2D to handle the trackers and measuring tools. This is a work in progress. The Scene2D is no longer an observable. Message sending is managed by the ViewportController. Move some refs to shared and weak to prevent lifetime issues.
author Benjamin Golinvaux <bgo@osimis.io>
date Sun, 19 May 2019 16:26:17 +0200
parents 03c4b998fcd0
children 6e888cf6a48b
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1 /**
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2 * Stone of Orthanc
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2019 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Affero General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Affero General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21
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22 #include "CompositorHelper.h"
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23
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24 #include <Core/OrthancException.h>
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25
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26 namespace OrthancStone
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27 {
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28 namespace Internals
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29 {
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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 layerIdentifier_;
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36 uint64_t lastRevision_;
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37
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38 public:
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39 Item(ILayerRenderer* renderer, // Takes ownership
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40 const ISceneLayer& layer,
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41 uint64_t layerIdentifier) :
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42 renderer_(renderer),
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43 layer_(layer),
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44 layerIdentifier_(layerIdentifier),
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45 lastRevision_(layer.GetRevision())
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46 {
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47 if (renderer == NULL)
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48 {
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49 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer);
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50 }
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51 }
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52
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53 ILayerRenderer& GetRenderer() const
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54 {
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55 assert(renderer_.get() != NULL);
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56 return *renderer_;
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57 }
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58
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59 const ISceneLayer& GetLayer() const
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60 {
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61 return layer_;
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62 }
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63
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64 uint64_t GetLayerIdentifier() const
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65 {
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66 return layerIdentifier_;
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67 }
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68
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69 uint64_t GetLastRevision() const
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70 {
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71 return lastRevision_;
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72 }
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73
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74 void UpdateRenderer()
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75 {
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76 assert(renderer_.get() != NULL);
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77 renderer_->Update(layer_);
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78 lastRevision_ = layer_.GetRevision();
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79 }
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80 };
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81
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82
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83 void CompositorHelper::Visit(const ISceneLayer& layer,
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84 uint64_t layerIdentifier,
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85 int depth)
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86 {
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87 // "Visit()" is only applied to layers existing in the scene
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88 assert(scene_.HasLayer(depth));
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89
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90 Content::iterator found = content_.find(depth);
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91
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92 assert(found == content_.end() ||
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93 found->second != NULL);
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94
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95 if (found == content_.end() ||
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96 found->second->GetLayerIdentifier() != layerIdentifier)
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97 {
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98 // This is the first time this layer is rendered, or the layer
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99 // is not the same as before
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100 if (found != content_.end())
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101 {
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102 delete found->second;
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103 content_.erase(found);
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104 }
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105
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106 std::auto_ptr<ILayerRenderer> renderer(factory_.Create(layer));
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107
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108 if (renderer.get() != NULL)
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109 {
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110 renderer->Render(sceneTransform_);
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111 content_[depth] = new Item(renderer.release(), layer, layerIdentifier);
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112 }
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113 }
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114 else
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115 {
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116 // This layer has already been rendered
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117 assert(found->second->GetLastRevision() <= layer.GetRevision());
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118
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119 if (found->second->GetLastRevision() < layer.GetRevision())
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120 {
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121 found->second->UpdateRenderer();
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122 }
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123
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124 found->second->GetRenderer().Render(sceneTransform_);
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125 }
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126
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127 // Check invariants
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128 assert(content_.find(depth) == content_.end() ||
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129 (content_[depth]->GetLayerIdentifier() == layerIdentifier &&
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130 content_[depth]->GetLastRevision() == layer.GetRevision()));
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131 }
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132
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133
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134 CompositorHelper::~CompositorHelper()
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135 {
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136 for (Content::iterator it = content_.begin(); it != content_.end(); ++it)
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137 {
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138 assert(it->second != NULL);
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139 delete it->second;
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140 }
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141 }
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142
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143
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144 void CompositorHelper::Refresh(unsigned int canvasWidth,
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145 unsigned int canvasHeight)
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146 {
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147 // Bring coordinate (0,0) to the center of the canvas
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148 AffineTransform2D offset = AffineTransform2D::CreateOffset(
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149 static_cast<double>(canvasWidth) / 2.0,
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150 static_cast<double>(canvasHeight) / 2.0);
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151
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152 sceneTransform_ = AffineTransform2D::Combine(offset, scene_.GetSceneToCanvasTransform());
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153 scene_.Apply(*this);
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154 }
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155 }
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156 }