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annotate Applications/Samples/WebAssembly/SingleFrameViewer/SingleFrameViewerApp.js @ 1787:6e8105942146

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safeguard in TextureBaseSceneLayer
author Sebastien Jodogne <s.jodogne@gmail.com>
date Sat, 15 May 2021 11:47:55 +0200
parents 9ac2a65d4172
children 3889ae96d2e9
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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
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21
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22 // This object wraps the functions exposed by the wasm module
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23
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24 const WasmModuleWrapper = function() {
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25 this._InitializeViewport = undefined;
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26 this._LoadFromOrthanc = undefined;
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27 };
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28
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29 WasmModuleWrapper.prototype.Setup = function(Module) {
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30 this._InitializeViewport = Module.cwrap('InitializeViewport', null, [ 'string' ]);
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31 this._LoadFromOrthanc = Module.cwrap('LoadFromOrthanc', null, [ 'string', 'int' ]);
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32 };
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33
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34 WasmModuleWrapper.prototype.InitializeViewport = function(canvasId) {
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35 this._InitializeViewport(canvasId);
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36 };
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37
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38 WasmModuleWrapper.prototype.LoadFromOrthanc = function(instance, frame) {
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39 this._LoadFromOrthanc(instance, frame);
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40 };
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41
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42 var wasmModuleWrapper = new WasmModuleWrapper();
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43
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44 $(document).ready(function() {
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45
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46 window.addEventListener('WasmModuleInitialized', function() {
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47 wasmModuleWrapper.Setup(Module);
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48 console.warn('Native C++ module initialized');
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49
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50 wasmModuleWrapper.InitializeViewport('viewport');
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51 });
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52
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53 window.addEventListener('StoneException', function() {
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54 alert('Exception caught in C++ code');
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55 });
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56
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57 var scriptSource;
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58
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59 if ('WebAssembly' in window) {
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60 console.warn('Loading WebAssembly');
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61 scriptSource = 'SingleFrameViewerWasm.js';
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62 } else {
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63 console.error('Your browser does not support WebAssembly!');
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64 }
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65
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66 // Option 1: Loading script using plain HTML
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67
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68 /*
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69 var script = document.createElement('script');
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70 script.src = scriptSource;
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71 script.type = 'text/javascript';
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72 document.body.appendChild(script);
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73 */
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74
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75 // Option 2: Loading script using AJAX (gives the opportunity to
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76 // report explicit errors)
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77
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78 axios.get(scriptSource)
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79 .then(function (response) {
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80 var script = document.createElement('script');
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81 script.innerHTML = response.data;
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82 script.type = 'text/javascript';
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83 document.body.appendChild(script);
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84 })
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85 .catch(function (error) {
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86 alert('Cannot load the WebAssembly framework');
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87 });
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88 });
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89
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90
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91 $('#orthancLoad').click(function() {
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92 wasmModuleWrapper.LoadFromOrthanc($('#orthancInstance').val(),
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93 $('#orthancFrame').val());
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94 });