Mercurial > hg > orthanc-stone

annotate Samples/WebAssembly/BasicScene.cpp @ 752:6030db24eaea

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Fixed wasm sample (BasicScene) according to changes (ViewportController) + hg ignore update + dev env notes for bgo
author Benjamin Golinvaux <bgo@osimis.io>
date Wed, 22 May 2019 16:00:58 +0200
parents 419e5662d7a5
children 92c400a09f1b
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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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23 #include <emscripten.h>
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24 #include <emscripten/html5.h>
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25
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26 // From Stone
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27 #include "../../Applications/Sdl/SdlOpenGLWindow.h"
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28 #include "../../Framework/Scene2D/CairoCompositor.h"
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29 #include "../../Framework/Scene2D/ColorTextureSceneLayer.h"
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30 #include "../../Framework/Scene2D/OpenGLCompositor.h"
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31 #include "../../Framework/Scene2D/PanSceneTracker.h"
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32 #include "../../Framework/Scene2D/RotateSceneTracker.h"
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33 #include "../../Framework/Scene2D/Scene2D.h"
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34 #include "../../Framework/Scene2D/ZoomSceneTracker.h"
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35 #include "../../Framework/Scene2DViewport/ViewportController.h"
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36 #include "../../Framework/StoneInitialization.h"
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37 #include "../../Framework/OpenGL/WebAssemblyOpenGLContext.h"
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38
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39 // From Orthanc framework
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40 #include <Core/Images/Image.h>
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41 #include <Core/Logging.h>
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42 #include <Core/OrthancException.h>
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44 #include <boost/make_shared.hpp>
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45
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46 #include <stdio.h>
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47
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48 static const unsigned int FONT_SIZE = 32;
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49
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50 using boost::shared_ptr;
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51 using boost::make_shared;
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53 void PrepareScene(OrthancStone::Scene2DPtr scene)
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54 {
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55 using namespace OrthancStone;
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56
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57 // Texture of 2x2 size
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58 if (1)
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59 {
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60 Orthanc::Image i(Orthanc::PixelFormat_RGB24, 2, 2, false);
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61
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62 uint8_t *p = reinterpret_cast<uint8_t*>(i.GetRow(0));
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63 p[0] = 255;
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64 p[1] = 0;
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65 p[2] = 0;
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66
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67 p[3] = 0;
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68 p[4] = 255;
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69 p[5] = 0;
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70
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71 p = reinterpret_cast<uint8_t*>(i.GetRow(1));
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72 p[0] = 0;
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73 p[1] = 0;
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74 p[2] = 255;
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75
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76 p[3] = 255;
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77 p[4] = 0;
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78 p[5] = 0;
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79
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80 scene->SetLayer(12, new ColorTextureSceneLayer(i));
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81
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82 std::auto_ptr<ColorTextureSceneLayer> l(new ColorTextureSceneLayer(i));
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83 l->SetOrigin(-3, 2);
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84 l->SetPixelSpacing(1.5, 1);
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85 l->SetAngle(20.0 / 180.0 * M_PI);
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86 scene->SetLayer(14, l.release());
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87 }
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88
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89 // Texture of 1x1 size
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90 if (1)
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91 {
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92 Orthanc::Image i(Orthanc::PixelFormat_RGB24, 1, 1, false);
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93
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94 uint8_t *p = reinterpret_cast<uint8_t*>(i.GetRow(0));
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95 p[0] = 255;
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96 p[1] = 0;
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97 p[2] = 0;
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98
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99 std::auto_ptr<ColorTextureSceneLayer> l(new ColorTextureSceneLayer(i));
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100 l->SetOrigin(-2, 1);
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101 l->SetAngle(20.0 / 180.0 * M_PI);
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102 scene->SetLayer(13, l.release());
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103 }
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104
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105 // Some lines
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106 {
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107 std::auto_ptr<PolylineSceneLayer> layer(new PolylineSceneLayer);
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108
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109 layer->SetThickness(1);
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110
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111 PolylineSceneLayer::Chain chain;
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112 chain.push_back(ScenePoint2D(0 - 0.5, 0 - 0.5));
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113 chain.push_back(ScenePoint2D(0 - 0.5, 2 - 0.5));
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114 chain.push_back(ScenePoint2D(2 - 0.5, 2 - 0.5));
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115 chain.push_back(ScenePoint2D(2 - 0.5, 0 - 0.5));
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116 layer->AddChain(chain, true);
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117
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118 chain.clear();
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119 chain.push_back(ScenePoint2D(-5, -5));
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120 chain.push_back(ScenePoint2D(5, -5));
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121 chain.push_back(ScenePoint2D(5, 5));
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122 chain.push_back(ScenePoint2D(-5, 5));
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123 layer->AddChain(chain, true);
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124
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125 double dy = 1.01;
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126 chain.clear();
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127 chain.push_back(ScenePoint2D(-4, -4));
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128 chain.push_back(ScenePoint2D(4, -4 + dy));
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129 chain.push_back(ScenePoint2D(-4, -4 + 2.0 * dy));
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130 chain.push_back(ScenePoint2D(4, 2));
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131 layer->AddChain(chain, false);
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132
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133 layer->SetColor(0,255, 255);
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134 scene->SetLayer(50, layer.release());
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135 }
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136
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137 // Some text
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138 if (1)
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139 {
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140 std::auto_ptr<TextSceneLayer> layer(new TextSceneLayer);
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141 layer->SetText("Hello");
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142 scene->SetLayer(100, layer.release());
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143 }
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144 }
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145
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146 namespace OrthancStone
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147 {
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148 class WebAssemblyViewport : public boost::noncopyable
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149 {
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150 private:
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151 // the construction order is important because compositor_
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152 // will hold a reference to the scene that belong to the
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153 // controller_ object
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154 OpenGL::WebAssemblyOpenGLContext context_;
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155 ViewportControllerPtr controller_;
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156 OpenGLCompositor compositor_;
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157
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158 void SetupEvents(const std::string& canvas);
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159
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160 public:
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161 WebAssemblyViewport(MessageBroker& broker,
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162 const std::string& canvas) :
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163 context_(canvas),
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164 controller_(make_shared<ViewportController>(broker)),
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165 compositor_(context_, *controller_->GetScene())
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166 {
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167 compositor_.SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT,
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168 FONT_SIZE, Orthanc::Encoding_Latin1);
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169 SetupEvents(canvas);
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170 }
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171
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172 Scene2DPtr GetScene()
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173 {
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174 return controller_->GetScene();
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175 }
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176
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177 ViewportControllerPtr GetController()
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178 {
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179 return controller_;
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180 }
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181
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182 void UpdateSize()
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183 {
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184 context_.UpdateSize();
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185 compositor_.UpdateSize();
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186 Refresh();
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187 }
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188
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189 void Refresh()
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190 {
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191 compositor_.Refresh();
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192 }
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193
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194 const std::string& GetCanvasIdentifier() const
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195 {
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196 return context_.GetCanvasIdentifier();
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197 }
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198
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199 ScenePoint2D GetPixelCenterCoordinates(int x, int y) const
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200 {
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201 return compositor_.GetPixelCenterCoordinates(x, y);
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202 }
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203
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204 unsigned int GetCanvasWidth() const
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205 {
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206 return context_.GetCanvasWidth();
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207 }
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208
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209 unsigned int GetCanvasHeight() const
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210 {
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211 return context_.GetCanvasHeight();
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212 }
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213 };
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214
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215 class ActiveTracker : public boost::noncopyable
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216 {
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217 private:
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218 OrthancStone::FlexiblePointerTrackerPtr tracker_;
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219 std::string canvasIdentifier_;
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220 bool insideCanvas_;
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221
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222 public:
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223 ActiveTracker(FlexiblePointerTrackerPtr tracker,
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224 const WebAssemblyViewport& viewport) :
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225 tracker_(tracker),
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226 canvasIdentifier_(viewport.GetCanvasIdentifier()),
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227 insideCanvas_(true)
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228 {
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229 if (tracker_.get() == NULL)
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230 {
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231 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer);
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232 }
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233 }
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234
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235 bool IsAlive() const
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236 {
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237 return tracker_->IsAlive();
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238 }
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239
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240 void PointerMove(const PointerEvent& event)
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241 {
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242 tracker_->PointerMove(event);
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243 }
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244
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245 void PointerUp(const PointerEvent& event)
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246 {
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247 tracker_->PointerUp(event);
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248 }
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249 };
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250 }
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251
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252 static OrthancStone::PointerEvent* ConvertMouseEvent(
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253 const EmscriptenMouseEvent& source,
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254 OrthancStone::WebAssemblyViewport& viewport)
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255 {
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256 std::auto_ptr<OrthancStone::PointerEvent> target(
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257 new OrthancStone::PointerEvent);
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258
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259 target->AddPosition(viewport.GetPixelCenterCoordinates(
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260 source.targetX, source.targetY));
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261 target->SetAltModifier(source.altKey);
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262 target->SetControlModifier(source.ctrlKey);
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263 target->SetShiftModifier(source.shiftKey);
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264
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265 return target.release();
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266 }
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267
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268 std::auto_ptr<OrthancStone::ActiveTracker> tracker_;
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269
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270 EM_BOOL OnMouseEvent(int eventType,
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271 const EmscriptenMouseEvent *mouseEvent,
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272 void *userData)
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273 {
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274 if (mouseEvent != NULL &&
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275 userData != NULL)
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276 {
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277 OrthancStone::WebAssemblyViewport& viewport =
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278 *reinterpret_cast<OrthancStone::WebAssemblyViewport*>(userData);
617
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279
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280 switch (eventType)
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281 {
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282 case EMSCRIPTEN_EVENT_CLICK:
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283 {
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284 static unsigned int count = 0;
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285 char buf[64];
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286 sprintf(buf, "click %d", count++);
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287
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288 std::auto_ptr<OrthancStone::TextSceneLayer> layer(new OrthancStone::TextSceneLayer);
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289 layer->SetText(buf);
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290 viewport.GetScene()->SetLayer(100, layer.release());
618
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291 viewport.Refresh();
617
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292 break;
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293 }
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294
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295 case EMSCRIPTEN_EVENT_MOUSEDOWN:
618
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296 {
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297 OrthancStone::FlexiblePointerTrackerPtr t;
618
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298
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299 {
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300 std::auto_ptr<OrthancStone::PointerEvent> event(
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301 ConvertMouseEvent(*mouseEvent, viewport));
618
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302
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303 switch (mouseEvent->button)
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304 {
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305 case 0: // Left button
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306 emscripten_console_log("Creating RotateSceneTracker");
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307 t.reset(new OrthancStone::RotateSceneTracker(
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308 viewport.GetController(), *event));
618
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309 break;
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310
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311 case 1: // Middle button
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312 emscripten_console_log("Creating PanSceneTracker");
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313 LOG(INFO) << "Creating PanSceneTracker" ;
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314 t.reset(new OrthancStone::PanSceneTracker(
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315 viewport.GetController(), *event));
618
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316 break;
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317
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318 case 2: // Right button
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319 emscripten_console_log("Creating ZoomSceneTracker");
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320 t.reset(new OrthancStone::ZoomSceneTracker(
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diff changeset
321 viewport.GetController(), *event, viewport.GetCanvasWidth()));
618
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322 break;
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323
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diff changeset
324 default:
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325 break;
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326 }
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327 }
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328
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329 if (t.get() != NULL)
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330 {
752
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diff changeset
331 tracker_.reset(
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332 new OrthancStone::ActiveTracker(t, viewport));
618
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333 viewport.Refresh();
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334 }
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335
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336 break;
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337 }
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338
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339 case EMSCRIPTEN_EVENT_MOUSEMOVE:
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diff changeset
340 if (tracker_.get() != NULL)
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341 {
752
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diff changeset
342 std::auto_ptr<OrthancStone::PointerEvent> event(
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343 ConvertMouseEvent(*mouseEvent, viewport));
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344 tracker_->PointerMove(*event);
618
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345 viewport.Refresh();
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346 }
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347 break;
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348
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349 case EMSCRIPTEN_EVENT_MOUSEUP:
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diff changeset
350 if (tracker_.get() != NULL)
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diff changeset
351 {
752
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diff changeset
352 std::auto_ptr<OrthancStone::PointerEvent> event(
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diff changeset
353 ConvertMouseEvent(*mouseEvent, viewport));
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diff changeset
354 tracker_->PointerUp(*event);
618
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diff changeset
355 viewport.Refresh();
752
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diff changeset
356 if (!tracker_->IsAlive())
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357 tracker_.reset();
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358 }
617
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359 break;
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360
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361 default:
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362 break;
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363 }
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diff changeset
364 }
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diff changeset
365
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366 return true;
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367 }
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diff changeset
368
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369
618
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370 void OrthancStone::WebAssemblyViewport::SetupEvents(const std::string& canvas)
617
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diff changeset
371 {
752
6030db24eaea Fixed wasm sample (BasicScene) according to changes (ViewportController) +
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diff changeset
372 #if 0
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373 emscripten_set_click_callback(canvas.c_str(), this, false, OnMouseEvent);
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diff changeset
374 #else
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diff changeset
375 emscripten_set_mousedown_callback(canvas.c_str(), this, false, OnMouseEvent);
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diff changeset
376 emscripten_set_mousemove_callback(canvas.c_str(), this, false, OnMouseEvent);
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diff changeset
377 emscripten_set_mouseup_callback(canvas.c_str(), this, false, OnMouseEvent);
6030db24eaea Fixed wasm sample (BasicScene) according to changes (ViewportController) +
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diff changeset
378 #endif
617
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379 }
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diff changeset
380
618
0925b27e8750 mouse events in wasm sample
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diff changeset
381 std::auto_ptr<OrthancStone::WebAssemblyViewport> viewport1_;
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diff changeset
382 std::auto_ptr<OrthancStone::WebAssemblyViewport> viewport2_;
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diff changeset
383 std::auto_ptr<OrthancStone::WebAssemblyViewport> viewport3_;
665
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diff changeset
384 OrthancStone::MessageBroker broker_;
616
97926984d5d0 WebAssembly sample using Scene2D
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parents:
diff changeset
385
752
6030db24eaea Fixed wasm sample (BasicScene) according to changes (ViewportController) +
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diff changeset
386 EM_BOOL OnWindowResize(
6030db24eaea Fixed wasm sample (BasicScene) according to changes (ViewportController) +
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diff changeset
387 int eventType, const EmscriptenUiEvent *uiEvent, void *userData)
616
97926984d5d0 WebAssembly sample using Scene2D
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parents:
diff changeset
388 {
618
0925b27e8750 mouse events in wasm sample
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diff changeset
389 if (viewport1_.get() != NULL)
616
97926984d5d0 WebAssembly sample using Scene2D
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parents:
diff changeset
390 {
618
0925b27e8750 mouse events in wasm sample
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diff changeset
391 viewport1_->UpdateSize();
616
97926984d5d0 WebAssembly sample using Scene2D
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parents:
diff changeset
392 }
97926984d5d0 WebAssembly sample using Scene2D
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parents:
diff changeset
393
618
0925b27e8750 mouse events in wasm sample
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diff changeset
394 if (viewport2_.get() != NULL)
616
97926984d5d0 WebAssembly sample using Scene2D
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parents:
diff changeset
395 {
618
0925b27e8750 mouse events in wasm sample
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diff changeset
396 viewport2_->UpdateSize();
616
97926984d5d0 WebAssembly sample using Scene2D
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parents:
diff changeset
397 }
97926984d5d0 WebAssembly sample using Scene2D
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parents:
diff changeset
398
618
0925b27e8750 mouse events in wasm sample
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diff changeset
399 if (viewport3_.get() != NULL)
616
97926984d5d0 WebAssembly sample using Scene2D
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parents:
diff changeset
400 {
618
0925b27e8750 mouse events in wasm sample
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diff changeset
401 viewport3_->UpdateSize();
616
97926984d5d0 WebAssembly sample using Scene2D
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parents:
diff changeset
402 }
97926984d5d0 WebAssembly sample using Scene2D
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parents:
diff changeset
403
97926984d5d0 WebAssembly sample using Scene2D
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parents:
diff changeset
404 return true;
97926984d5d0 WebAssembly sample using Scene2D
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
405 }
97926984d5d0 WebAssembly sample using Scene2D
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
406
97926984d5d0 WebAssembly sample using Scene2D
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
407 extern "C"
97926984d5d0 WebAssembly sample using Scene2D
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parents:
diff changeset
408 {
97926984d5d0 WebAssembly sample using Scene2D
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parents:
diff changeset
409 int main(int argc, char const *argv[])
97926984d5d0 WebAssembly sample using Scene2D
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parents:
diff changeset
410 {
97926984d5d0 WebAssembly sample using Scene2D
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parents:
diff changeset
411 OrthancStone::StoneInitialize();
752
6030db24eaea Fixed wasm sample (BasicScene) according to changes (ViewportController) +
Benjamin Golinvaux <bgo@osimis.io>
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diff changeset
412 // Orthanc::Logging::EnableInfoLevel(true);
6030db24eaea Fixed wasm sample (BasicScene) according to changes (ViewportController) +
Benjamin Golinvaux <bgo@osimis.io>
parents: 665
diff changeset
413 // Orthanc::Logging::EnableTraceLevel(true);
616
97926984d5d0 WebAssembly sample using Scene2D
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parents:
diff changeset
414 EM_ASM(window.dispatchEvent(new CustomEvent("WebAssemblyLoaded")););
97926984d5d0 WebAssembly sample using Scene2D
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parents:
diff changeset
415 }
97926984d5d0 WebAssembly sample using Scene2D
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
416
97926984d5d0 WebAssembly sample using Scene2D
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
417 EMSCRIPTEN_KEEPALIVE
97926984d5d0 WebAssembly sample using Scene2D
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
418 void Initialize()
97926984d5d0 WebAssembly sample using Scene2D
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
419 {
752
6030db24eaea Fixed wasm sample (BasicScene) according to changes (ViewportController) +
Benjamin Golinvaux <bgo@osimis.io>
parents: 665
diff changeset
420 viewport1_.reset(
6030db24eaea Fixed wasm sample (BasicScene) according to changes (ViewportController) +
Benjamin Golinvaux <bgo@osimis.io>
parents: 665
diff changeset
421 new OrthancStone::WebAssemblyViewport(broker_, "mycanvas1"));
618
0925b27e8750 mouse events in wasm sample
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 617
diff changeset
422 PrepareScene(viewport1_->GetScene());
0925b27e8750 mouse events in wasm sample
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 617
diff changeset
423 viewport1_->UpdateSize();
616
97926984d5d0 WebAssembly sample using Scene2D
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
424
752
6030db24eaea Fixed wasm sample (BasicScene) according to changes (ViewportController) +
Benjamin Golinvaux <bgo@osimis.io>
parents: 665
diff changeset
425 viewport2_.reset(
6030db24eaea Fixed wasm sample (BasicScene) according to changes (ViewportController) +
Benjamin Golinvaux <bgo@osimis.io>
parents: 665
diff changeset
426 new OrthancStone::WebAssemblyViewport(broker_, "mycanvas2"));
618
0925b27e8750 mouse events in wasm sample
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 617
diff changeset
427 PrepareScene(viewport2_->GetScene());
0925b27e8750 mouse events in wasm sample
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 617
diff changeset
428 viewport2_->UpdateSize();
616
97926984d5d0 WebAssembly sample using Scene2D
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
429
752
6030db24eaea Fixed wasm sample (BasicScene) according to changes (ViewportController) +
Benjamin Golinvaux <bgo@osimis.io>
parents: 665
diff changeset
430 viewport3_.reset(
6030db24eaea Fixed wasm sample (BasicScene) according to changes (ViewportController) +
Benjamin Golinvaux <bgo@osimis.io>
parents: 665
diff changeset
431 new OrthancStone::WebAssemblyViewport(broker_, "mycanvas3"));
618
0925b27e8750 mouse events in wasm sample
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 617
diff changeset
432 PrepareScene(viewport3_->GetScene());
0925b27e8750 mouse events in wasm sample
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 617
diff changeset
433 viewport3_->UpdateSize();
616
97926984d5d0 WebAssembly sample using Scene2D
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
434
97926984d5d0 WebAssembly sample using Scene2D
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
435 emscripten_set_resize_callback("#window", NULL, false, OnWindowResize);
97926984d5d0 WebAssembly sample using Scene2D
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
436 }
97926984d5d0 WebAssembly sample using Scene2D
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
437 }