Mercurial > hg > orthanc-stone

annotate Applications/Samples/WebAssembly/RtViewer/RtViewerWasmApp.js @ 1646:4e14735e98f8

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preparing to remove FrameExtent
author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 12 Nov 2020 15:16:21 +0100
parents 4fb8fdf03314
children 9ac2a65d4172
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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 // 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 };
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27
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28 WasmModuleWrapper.prototype.Setup = function(Module) {
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29 this._SetArgument = Module.cwrap('SetArgument', null, [ 'string', 'string' ]);
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30 this._Initialize = Module.cwrap('Initialize', null, [ 'string' ]);
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31 };
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32
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33 WasmModuleWrapper.prototype.SetArgument = function(key, value) {
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34 this._SetArgument(key, value);
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35 };
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36
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37 WasmModuleWrapper.prototype.Initialize = function(canvasId) {
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38 this._Initialize(canvasId);
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39 };
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40
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41 var wasmModuleWrapper = new WasmModuleWrapper();
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42
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43 $(document).ready(function() {
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44
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45 window.addEventListener('WasmModuleInitialized', function() {
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46
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47 // bind the C++ global functions
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48 wasmModuleWrapper.Setup(Module);
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49
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50 console.warn('Native C++ module initialized');
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51
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52 // Loop over the GET arguments
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53 var parameters = window.location.search.substr(1);
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54 if (parameters != null && parameters != '') {
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55 var tokens = parameters.split('&');
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56 for (var i = 0; i < tokens.length; i++) {
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57 var arg = tokens[i].split('=');
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58 if (arg.length == 2) {
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59 // Send each GET argument to WebAssembly
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60 wasmModuleWrapper.SetArgument(arg[0], decodeURIComponent(arg[1]));
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61 }
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62 }
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63 }
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64 wasmModuleWrapper.Initialize();
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65 });
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66
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67 window.addEventListener('StoneException', function() {
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68 alert('Exception caught in C++ code');
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69 });
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70
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71 var scriptSource;
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72
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73 if ('WebAssembly' in window) {
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74 console.warn('Loading WebAssembly');
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75 scriptSource = 'RtViewerWasm.js';
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76 } else {
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77 console.error('Your browser does not support WebAssembly!');
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78 }
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79
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80 // Option 1: Loading script using plain HTML
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81
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82 /*
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83 var script = document.createElement('script');
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84 script.src = scriptSource;
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85 script.type = 'text/javascript';
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86 document.body.appendChild(script);
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87 */
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88
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89 // Option 2: Loading script using AJAX (gives the opportunity to
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90 // report explicit errors)
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91
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92 axios.get(scriptSource)
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93 .then(function (response) {
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94 var script = document.createElement('script');
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95 script.innerHTML = response.data;
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96 script.type = 'text/javascript';
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97 document.body.appendChild(script);
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98 })
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99 .catch(function (error) {
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100 alert('Cannot load the WebAssembly framework');
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101 });
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102 });
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103
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104 // 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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105