Mercurial > hg > orthanc-stl

annotate Sources/viewer.js @ 0:4e889a8e8be2

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initial commit of the viewer plugin
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 04 Jul 2023 19:15:27 +0200
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children 0f03a8a0bd6f
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1 /**
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2 * SPDX-FileCopyrightText: 2023 Sebastien Jodogne, UCLouvain, Belgium
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3 * SPDX-License-Identifier: GPL-3.0-or-later
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4 */
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5
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6 /**
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7 * STL plugin for Orthanc
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8 * Copyright (C) 2023 Sebastien Jodogne, UCLouvain, Belgium
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9 *
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10 * This program is free software: you can redistribute it and/or
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11 * modify it under the terms of the GNU General Public License as
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12 * published by the Free Software Foundation, either version 3 of the
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13 * License, or (at your option) any later version.
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14 *
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15 * This program is distributed in the hope that it will be useful, but
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16 * WITHOUT ANY WARRANTY; without even the implied warranty of
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17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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18 * General Public License for more details.
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19 *
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20 * You should have received a copy of the GNU General Public License
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21 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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22 **/
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23
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24
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25 import * as THREE from 'three';
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26
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27 import { OrbitControls } from './OrbitControls.js';
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28 import { STLLoader } from './STLLoader.js';
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29
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30
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31 // http://stackoverflow.com/a/21903119/881731
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32 function GetUrlParameter(sParam)
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33 {
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34 var sPageURL = decodeURIComponent(window.location.search.substring(1));
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35 var sURLVariables = sPageURL.split('&');
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36
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37 for (var i = 0; i < sURLVariables.length; i++) {
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38 var sParameterName = sURLVariables[i].split('=');
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39
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40 if (sParameterName[0] === sParam) {
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41 return sParameterName[1] === undefined ? '' : sParameterName[1];
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42 }
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43 }
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44
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45 return '';
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46 };
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47
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48 var instanceId = GetUrlParameter('instance');
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49
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50
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51 const scene = new THREE.Scene();
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52
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53 const renderer = new THREE.WebGLRenderer();
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54 renderer.setSize(window.innerWidth, window.innerHeight);
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55 document.body.appendChild(renderer.domElement);
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56
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57 const material = new THREE.MeshPhongMaterial();
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58
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59 const light = new THREE.AmbientLight(0x555555);
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60 scene.add(light);
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61
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62 const light2 = new THREE.PointLight(0xaaaaaa, 2);
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63 light2.position.set(10, 10, 10);
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64 scene.add(light2);
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65
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66 const loader = new STLLoader()
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67 loader.load(
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68 '../instances/' + instanceId + '/content/0042-0011',
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69 function (geometry) {
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70 const frustumSize = 200;
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71
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72 geometry.computeBoundingBox();
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73 geometry.translate(-(geometry.boundingBox.min.x + geometry.boundingBox.max.x) / 2.0,
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74 -(geometry.boundingBox.min.y + geometry.boundingBox.max.y) / 2.0,
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75 -(geometry.boundingBox.min.z + geometry.boundingBox.max.z) / 2.0);
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76 geometry.scale((frustumSize / 2.0) / (geometry.boundingBox.max.x - geometry.boundingBox.min.x),
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77 (frustumSize / 2.0) / (geometry.boundingBox.max.y - geometry.boundingBox.min.y),
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78 (frustumSize / 2.0) / (geometry.boundingBox.max.z - geometry.boundingBox.min.z));
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79
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80 const mesh = new THREE.Mesh(geometry, material);
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81 scene.add(mesh);
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82
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83 const aspect = window.innerWidth / window.innerHeight;
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84 const camera = new THREE.OrthographicCamera(
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85 frustumSize * aspect / - 2, frustumSize * aspect / 2,
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86 frustumSize / 2, frustumSize / - 2, 1, frustumSize);
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87
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88 camera.position.z = 100;
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89
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90 const controls = new OrbitControls(camera, renderer.domElement);
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91
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92 //controls.update() must be called after any manual changes to the camera's transform
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93 controls.update();
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94
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95 function animate() {
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96 requestAnimationFrame(animate);
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97
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98 // required if controls.enableDamping or controls.autoRotate are set to true
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99 controls.update();
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100 light2.position.copy(camera.position);
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101
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102 renderer.render(scene, camera);
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103 }
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104
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105 animate();
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106
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107 function onWindowResize() {
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108 const aspect = window.innerWidth / window.innerHeight;
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109 camera.left = - frustumSize * aspect / 2;
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110 camera.right = frustumSize * aspect / 2;
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111 camera.top = frustumSize / 2;
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112 camera.bottom = - frustumSize / 2;
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113 camera.updateProjectionMatrix();
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114 renderer.setSize(window.innerWidth, window.innerHeight);
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115 }
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116
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117 window.addEventListener('resize', onWindowResize );
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118 },
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119 function (xhr) {
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120 },
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121 function (error) {
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122 console.log(error);
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123 }
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124 );