Mercurial > hg > orthanc-stone
annotate Applications/Platforms/WebAssembly/WebGLViewportsRegistry.h @ 1874:08f2476e8f5e
added classes OrientedIntegerLine2D and RectanglesIntegerProjection
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Tue, 11 Jan 2022 18:58:37 +0100 |
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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) 2017-2022 Osimis S.A., Belgium |
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6 * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium |
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7 * |
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8 * This program is free software: you can redistribute it and/or |
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9 * modify it under the terms of the GNU Affero General Public License |
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10 * as published by the Free Software Foundation, either version 3 of |
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11 * the License, or (at your option) any later version. |
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12 * |
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13 * This program is distributed in the hope that it will be useful, but |
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14 * WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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16 * Affero General Public License for more details. |
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17 * |
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18 * You should have received a copy of the GNU Affero General Public License |
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19 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
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20 **/ |
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21 |
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22 |
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23 #pragma once |
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24 |
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25 #include "WebGLViewport.h" |
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26 |
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27 #include <boost/enable_shared_from_this.hpp> |
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28 |
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29 namespace OrthancStone |
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30 { |
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31 /** |
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32 * This singleton class must be used if many WebGL viewports are |
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33 * created by the higher-level application, implying possible loss |
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34 * of WebGL contexts. The object will run an infinite update loop |
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35 * that checks whether all the WebGL context are still valid (not |
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36 * lost). If some WebGL context is lost, it is automatically |
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37 * reinitialized by created a fresh HTML5 canvas. |
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38 **/ |
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39 class WebGLViewportsRegistry : public boost::noncopyable, |
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40 public boost::enable_shared_from_this<WebGLViewportsRegistry> |
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41 { |
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42 private: |
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43 typedef std::map<std::string, boost::shared_ptr<WebGLViewport> > Viewports; |
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44 |
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45 double timeoutMS_; |
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46 Viewports viewports_; |
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47 long timeOutID_; |
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48 |
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49 void LaunchTimer(); |
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50 |
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51 void OnTimeout(); |
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52 |
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53 static void OnTimeoutCallback(void *userData); |
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54 |
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55 public: |
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57 |
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58 ~WebGLViewportsRegistry(); |
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59 |
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60 boost::shared_ptr<WebGLViewport> Add(const std::string& canvasId); |
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61 |
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62 void Remove(const std::string& canvasId); |
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63 |
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64 void Clear(); |
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65 |
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66 class Accessor : public boost::noncopyable |
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67 { |
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68 private: |
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69 WebGLViewportsRegistry& that_; |
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70 std::unique_ptr<IViewport::ILock> lock_; |
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71 |
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72 public: |
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73 Accessor(WebGLViewportsRegistry& that, |
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74 const std::string& canvasId); |
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75 |
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76 bool IsValid() const |
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77 { |
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78 return lock_.get() != NULL; |
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79 } |
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80 |
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81 IViewport::ILock& GetViewport() const; |
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82 }; |
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83 |
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84 |
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86 static void FinalizeGlobalRegistry(); |
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87 |
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88 static void SetGlobalRegistryTimeout(double timeout); |
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90 static WebGLViewportsRegistry& GetGlobalRegistry(); |
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91 }; |
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92 } |