Mercurial > hg > orthanc-stone
annotate Applications/Samples/WebAssembly/RtViewer/RtViewerWasm.cpp @ 1802:757987cb5a68
recycling of layers in MacroSceneLayer
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Thu, 20 May 2021 13:58:26 +0200 |
parents | 9ac2a65d4172 |
children | 3889ae96d2e9 |
rev | line source |
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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) 2017-2021 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 |
1466 | 21 #include "../../Common/RtViewerApp.h" |
22 #include "../../Common/RtViewerView.h" | |
23 #include "../../Common/SampleHelpers.h" | |
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24 |
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25 // Stone of Orthanc includes |
1543 | 26 #include "../../../../OrthancStone/Sources/StoneException.h" |
27 #include "../../../../OrthancStone/Sources/StoneInitialization.h" | |
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28 #include "../../../Platforms/WebAssembly/WebAssemblyLoadersContext.h" |
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29 #include "../../../Platforms/WebAssembly/WebGLViewport.h" |
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30 |
1466 | 31 #include <Toolbox.h> |
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32 |
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33 #include <boost/program_options.hpp> |
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34 #include <boost/shared_ptr.hpp> |
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35 // #include <boost/pointer_cast.hpp> this include might be necessary in more recent boost versions |
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36 |
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37 #include <emscripten.h> |
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38 #include <emscripten/html5.h> |
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39 |
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40 |
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41 #define DISPATCH_JAVASCRIPT_EVENT(name) \ |
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42 EM_ASM( \ |
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43 const customEvent = document.createEvent("CustomEvent"); \ |
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44 customEvent.initCustomEvent(name, false, false, undefined); \ |
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45 window.dispatchEvent(customEvent); \ |
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46 ); |
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47 |
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48 #define EXTERN_CATCH_EXCEPTIONS \ |
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49 catch (Orthanc::OrthancException& e) \ |
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50 { \ |
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51 LOG(ERROR) << "OrthancException: " << e.What(); \ |
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52 DISPATCH_JAVASCRIPT_EVENT("StoneException"); \ |
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53 } \ |
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54 catch (OrthancStone::StoneException& e) \ |
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55 { \ |
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56 LOG(ERROR) << "StoneException: " << e.What(); \ |
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57 DISPATCH_JAVASCRIPT_EVENT("StoneException"); \ |
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58 } \ |
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59 catch (std::exception& e) \ |
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60 { \ |
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61 LOG(ERROR) << "Runtime error: " << e.what(); \ |
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62 DISPATCH_JAVASCRIPT_EVENT("StoneException"); \ |
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63 } \ |
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64 catch (...) \ |
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65 { \ |
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66 LOG(ERROR) << "Native exception"; \ |
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67 DISPATCH_JAVASCRIPT_EVENT("StoneException"); \ |
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68 } |
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69 |
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70 namespace OrthancStone |
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71 { |
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72 // typedef EM_BOOL (*OnMouseWheelFunc)(int eventType, const EmscriptenWheelEvent* wheelEvent, void* userData); |
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73 |
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74 EM_BOOL RtViewerView_Scroll(int eventType, |
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75 const EmscriptenWheelEvent* wheelEvent, |
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76 void* userData) |
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77 { |
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78 RtViewerView* that = reinterpret_cast<RtViewerView*>(userData); |
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79 |
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80 int delta = 0; |
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81 if (wheelEvent->deltaY < 0) |
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82 delta = -1; |
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83 if (wheelEvent->deltaY > 0) |
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84 delta = 1; |
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85 |
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86 that->Scroll(delta); |
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87 |
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88 return 1; |
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89 } |
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90 |
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91 boost::shared_ptr<IViewport> RtViewerView::CreateViewport( |
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92 const std::string& canvasId) |
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93 { |
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94 boost::shared_ptr<IViewport> viewport = WebGLViewport::Create(canvasId); |
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95 |
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96 void* userData = reinterpret_cast<void*>(this); |
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97 |
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98 // manually add the mouse wheel handler |
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99 |
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100 std::string selector = "#" + canvasId; |
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101 |
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102 emscripten_set_wheel_callback_on_thread( |
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103 selector.c_str(), |
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104 userData, |
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105 false, |
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106 &RtViewerView_Scroll, |
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107 EM_CALLBACK_THREAD_CONTEXT_CALLING_THREAD); |
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108 |
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109 return viewport; |
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110 } |
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111 |
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112 void RtViewerView::CleanupViewportEvents() |
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113 { |
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114 void* userData = reinterpret_cast<void*>(this); |
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115 std::string selector = "#" + canvasId_; |
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116 emscripten_set_wheel_callback_on_thread( |
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117 selector.c_str(), |
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118 userData, |
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119 false, |
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120 NULL, |
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121 EM_CALLBACK_THREAD_CONTEXT_CALLING_THREAD); |
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122 } |
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123 |
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124 void RtViewerView::TakeScreenshot(const std::string& target, |
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125 unsigned int canvasWidth, |
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126 unsigned int canvasHeight) |
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127 { |
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128 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); |
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129 } |
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130 |
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131 |
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132 void RtViewerApp::RunWasm() |
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133 { |
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134 loadersContext_.reset(new WebAssemblyLoadersContext(1, 4, 1)); |
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135 |
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136 // we are in WASM --> downcast to concrete type |
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137 boost::shared_ptr<WebAssemblyLoadersContext> loadersContext = |
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138 boost::dynamic_pointer_cast<WebAssemblyLoadersContext>(loadersContext_); |
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139 |
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140 if (HasArgument("orthanc")) |
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141 loadersContext->SetLocalOrthanc(GetArgument("orthanc")); |
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142 else |
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143 loadersContext->SetLocalOrthanc(".."); |
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144 |
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145 loadersContext->SetDicomCacheSize(128 * 1024 * 1024); // 128MB |
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146 |
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147 CreateLoaders(); |
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148 |
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149 CreateView("RtViewer_Axial", VolumeProjection_Axial); |
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150 CreateView("RtViewer_Coronal", VolumeProjection_Coronal); |
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151 CreateView("RtViewer_Sagittal", VolumeProjection_Sagittal); |
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152 |
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153 for (size_t i = 0; i < views_.size(); ++i) |
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154 { |
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155 views_[i]->PrepareViewport(); |
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156 } |
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157 |
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158 StartLoaders(); |
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159 } |
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160 } |
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161 |
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162 extern "C" |
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163 { |
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164 boost::shared_ptr<OrthancStone::RtViewerApp> g_app; |
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165 |
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166 int main(int argc, char const *argv[]) |
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167 { |
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168 try |
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169 { |
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170 OrthancStone::StoneInitialize(); |
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171 Orthanc::Logging::Initialize(); |
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172 //Orthanc::Logging::EnableTraceLevel(true); |
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173 Orthanc::Logging::EnableInfoLevel(true); |
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174 |
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175 LOG(WARNING) << "Initializing native Stone"; |
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176 |
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177 LOG(WARNING) << "Compiled with Emscripten " << __EMSCRIPTEN_major__ |
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178 << "." << __EMSCRIPTEN_minor__ |
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179 << "." << __EMSCRIPTEN_tiny__; |
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180 |
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181 LOG(INFO) << "Endianness: " << Orthanc::EnumerationToString(Orthanc::Toolbox::DetectEndianness()); |
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182 |
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183 g_app = OrthancStone::RtViewerApp::Create(); |
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184 |
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185 DISPATCH_JAVASCRIPT_EVENT("WasmModuleInitialized"); |
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186 } |
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187 EXTERN_CATCH_EXCEPTIONS; |
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188 } |
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189 |
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190 EMSCRIPTEN_KEEPALIVE |
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191 void Initialize(const char* canvasId) |
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192 { |
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193 try |
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194 { |
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195 g_app->RunWasm(); |
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196 } |
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RtViewer SingleFrameViewer OK : wasm SDL single viewport
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197 EXTERN_CATCH_EXCEPTIONS; |
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198 } |
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199 |
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200 EMSCRIPTEN_KEEPALIVE |
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201 void SetArgument(const char* key, const char* value) |
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RtViewer SingleFrameViewer OK : wasm SDL single viewport
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202 { |
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RtViewer SingleFrameViewer OK : wasm SDL single viewport
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203 // This is called for each GET argument (cf. "app.js") |
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RtViewer SingleFrameViewer OK : wasm SDL single viewport
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204 LOG(INFO) << "Received GET argument: [" << key << "] = [" << value << "]"; |
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RtViewer SingleFrameViewer OK : wasm SDL single viewport
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205 g_app->SetArgument(key, value); |
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RtViewer SingleFrameViewer OK : wasm SDL single viewport
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206 } |
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RtViewer SingleFrameViewer OK : wasm SDL single viewport
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207 |
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208 } |