Mercurial > hg > orthanc-stone
annotate Applications/Platforms/WebAssembly/WebGLViewport.cpp @ 1599:73cd85d7da6a
SortedFrames::LookupSopInstanceUid()
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 28 Oct 2020 10:55:45 +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) 2017-2020 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 "WebGLViewport.h" |
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23 |
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24 #include "../../../OrthancStone/Sources/StoneException.h" |
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25 #include "../../../OrthancStone/Sources/Scene2D/OpenGLCompositor.h" |
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26 #include "../../../OrthancStone/Sources/Scene2DViewport/ViewportController.h" |
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27 |
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28 namespace OrthancStone |
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29 { |
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30 void WebGLViewport::Paint(ICompositor& compositor, |
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31 ViewportController& controller) |
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32 { |
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33 try |
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34 { |
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35 compositor.Refresh(controller.GetScene()); |
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36 |
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37 /** |
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38 * No need to manually swap the buffer: "Rendered WebGL content |
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39 * is implicitly presented (displayed to the user) on the canvas |
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40 * when the event handler that renders with WebGL returns back |
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41 * to the browser event loop." |
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42 * https://emscripten.org/docs/api_reference/html5.h.html#webgl-context |
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43 * |
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44 * Could call "emscripten_webgl_commit_frame()" if |
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45 * "explicitSwapControl" option were set to "true". |
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46 **/ |
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47 } |
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48 catch (const StoneException& e) |
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49 { |
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50 // Ignore problems about the loss of the WebGL context (edge case) |
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51 if (e.GetErrorCode() == ErrorCode_WebGLContextLost) |
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52 { |
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53 return; |
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54 } |
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55 else |
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56 { |
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57 throw; |
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58 } |
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59 } |
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60 } |
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61 |
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62 |
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63 WebGLViewport::WebGLViewport(const std::string& canvasId, bool enableEmscriptenMouseEvents) : |
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64 WebAssemblyViewport(canvasId,enableEmscriptenMouseEvents), |
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65 context_(GetCanvasCssSelector()) |
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66 { |
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67 AcquireCompositor(new OpenGLCompositor(context_)); |
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68 } |
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69 |
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70 boost::shared_ptr<WebGLViewport> WebGLViewport::Create( |
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71 const std::string& canvasId, bool enableEmscriptenMouseEvents) |
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72 { |
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73 boost::shared_ptr<WebGLViewport> that = boost::shared_ptr<WebGLViewport>( |
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74 new WebGLViewport(canvasId, enableEmscriptenMouseEvents)); |
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75 |
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76 that->WebAssemblyViewport::PostConstructor(); |
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77 return that; |
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78 } |
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79 |
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80 WebGLViewport::~WebGLViewport() |
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81 { |
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82 // Make sure to delete the compositor before its parent "context_" gets |
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83 // deleted |
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84 ClearCompositor(); |
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85 } |
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86 } |