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annotate Applications/Samples/WebAssembly/RtViewer/RtViewerWasmApp.js @ 1923:f4cdcba8c32a

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 22 Mar 2022 17:39:19 +0100
parents 7053b8a0aaec
children 07964689cb0b
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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
1871
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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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23 // This object wraps the functions exposed by the wasm module
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24
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25 const WasmModuleWrapper = function() {
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26 this._InitializeViewport = 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._SetArgument = Module.cwrap('SetArgument', null, [ 'string', 'string' ]);
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31 this._Initialize = Module.cwrap('Initialize', null, [ 'string' ]);
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32 };
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33
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34 WasmModuleWrapper.prototype.SetArgument = function(key, value) {
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35 this._SetArgument(key, value);
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36 };
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37
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38 WasmModuleWrapper.prototype.Initialize = function(canvasId) {
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39 this._Initialize(canvasId);
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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
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48 // bind the C++ global functions
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49 wasmModuleWrapper.Setup(Module);
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50
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51 console.warn('Native C++ module initialized');
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52
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53 // Loop over the GET arguments
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54 var parameters = window.location.search.substr(1);
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55 if (parameters != null && parameters != '') {
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56 var tokens = parameters.split('&');
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57 for (var i = 0; i < tokens.length; i++) {
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58 var arg = tokens[i].split('=');
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59 if (arg.length == 2) {
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60 // Send each GET argument to WebAssembly
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61 wasmModuleWrapper.SetArgument(arg[0], decodeURIComponent(arg[1]));
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62 }
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63 }
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64 }
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65 wasmModuleWrapper.Initialize();
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66 });
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67
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68 window.addEventListener('StoneException', function() {
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69 alert('Exception caught in C++ code');
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70 });
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71
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72 var scriptSource;
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73
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74 if ('WebAssembly' in window) {
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75 console.warn('Loading WebAssembly');
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76 scriptSource = 'RtViewerWasm.js';
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77 } else {
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78 console.error('Your browser does not support WebAssembly!');
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79 }
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80
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81 // Option 1: Loading script using plain HTML
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82
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83 /*
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84 var script = document.createElement('script');
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85 script.src = scriptSource;
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86 script.type = 'text/javascript';
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87 document.body.appendChild(script);
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88 */
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89
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90 // Option 2: Loading script using AJAX (gives the opportunity to
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91 // report explicit errors)
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92
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93 axios.get(scriptSource)
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94 .then(function (response) {
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95 var script = document.createElement('script');
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96 script.innerHTML = response.data;
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97 script.type = 'text/javascript';
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98 document.body.appendChild(script);
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99 })
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100 .catch(function (error) {
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101 alert('Cannot load the WebAssembly framework');
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102 });
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103 });
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104
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105 // http://localhost:9979/stone-rtviewer/index.html?loglevel=trace&ctseries=a04ecf01-79b2fc33-58239f7e-ad9db983-28e81afa&rtdose=830a69ff-8e4b5ee3-b7f966c8-bccc20fb-d322dceb&rtstruct=54460695-ba3885ee-ddf61ac0-f028e31d-a6e474d9
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106