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+import { TilesRenderer } from '../src/index.js';
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+import {
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+ Scene,
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+ DirectionalLight,
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+ AmbientLight,
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+ WebGLRenderer,
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+ PerspectiveCamera,
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+ Box3,
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+ OrthographicCamera,
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+ sRGBEncoding,
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+ Group,
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+ MeshStandardMaterial,
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+ PCFSoftShadowMap,
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+} from 'three';
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+import { OrbitControls } from 'three/examples/jsm/controls/OrbitControls.js';
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+import * as dat from 'three/examples/jsm/libs/dat.gui.module.js';
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+import Stats from 'three/examples/jsm/libs/stats.module.js';
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+
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+let camera, controls, scene, renderer, tiles, orthoCamera;
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+let offsetParent, box, dirLight;
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+let stats;
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+
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+const NONE = 0;
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+const DISPLAY_ACTIVE_TILES = 1;
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+const USE_SHADOW_CAMERA = 2;
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+const params = {
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+
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+ 'errorTarget': 2,
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+ 'shadowStrategy': NONE,
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+ 'orthographic': false,
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+
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+};
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+
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+init();
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+animate();
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+
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+function onLoadModel( scene ) {
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+
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+ scene.traverse( c => {
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+
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+ if ( c.isMesh ) {
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+
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+ c.material = new MeshStandardMaterial();
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+ c.castShadow = true;
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+ c.receiveShadow = true;
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+
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+ }
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+
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+ } );
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+
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+}
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+
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+function init() {
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+
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+ scene = new Scene();
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+
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+ // primary camera view
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+ renderer = new WebGLRenderer( { antialias: true } );
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+ renderer.setPixelRatio( window.devicePixelRatio );
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+ renderer.setSize( window.innerWidth, window.innerHeight );
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+ renderer.setClearColor( 0x151c1f );
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+ renderer.shadowMap.enabled = true;
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+ renderer.shadowMap.type = PCFSoftShadowMap;
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+ renderer.outputEncoding = sRGBEncoding;
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+
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+ document.body.appendChild( renderer.domElement );
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+
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+ camera = new PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 1, 4000 );
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+ camera.position.set( -21, 13, 25 );
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+
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+ orthoCamera = new OrthographicCamera();
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+
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+ // controls
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+ controls = new OrbitControls( camera, renderer.domElement );
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+ controls.screenSpacePanning = false;
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+ controls.minDistance = 1;
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+ controls.maxDistance = 2000;
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+
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+ // lights
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+ dirLight = new DirectionalLight( 0xffffff, 1.25 );
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+ dirLight.position.set( - 100, 40, 10 );
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+ dirLight.castShadow = true;
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+ dirLight.shadow.bias = - 0.00001;
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+ dirLight.shadow.mapSize.setScalar( 2048 );
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+
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+ const shadowCam = dirLight.shadow.camera;
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+ shadowCam.left = - 100;
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+ shadowCam.bottom = - 100;
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+ shadowCam.right = 100;
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+ shadowCam.top = 100;
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+ shadowCam.updateProjectionMatrix();
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+
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+ scene.add( dirLight );
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+
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+ const ambLight = new AmbientLight( 0xffffff, 0.05 );
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+ scene.add( ambLight );
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+
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+ box = new Box3();
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+
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+ offsetParent = new Group();
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+ scene.add( offsetParent );
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+
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+ // tiles
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+ const url = window.location.hash.replace( /^#/, '' ) || '../data/tileset.json';
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+ tiles = new TilesRenderer( url );
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+ tiles.onLoadModel = onLoadModel;
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+ offsetParent.add( tiles.group );
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+
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+
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+ onWindowResize();
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+ window.addEventListener( 'resize', onWindowResize, false );
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+
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+ // GUI
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+ const gui = new dat.GUI();
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+ gui.width = 300;
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+ gui.add( params, 'orthographic' );
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+ gui.add( params, 'errorTarget' ).min( 0 ).max( 25 ).step( 1 );
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+ gui.add( params, 'shadowStrategy', { NONE, DISPLAY_ACTIVE_TILES, USE_SHADOW_CAMERA } );
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+ gui.open();
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+
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+ // Stats
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+ stats = new Stats();
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+ stats.showPanel( 0 );
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+ document.body.appendChild( stats.dom );
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+
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+}
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+
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+function onWindowResize() {
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+
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+ camera.aspect = window.innerWidth / window.innerHeight;
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+ renderer.setPixelRatio( window.devicePixelRatio );
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+ renderer.setSize( window.innerWidth, window.innerHeight );
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+ camera.updateProjectionMatrix();
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+
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+ updateOrthoCamera();
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+
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+}
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+
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+function updateOrthoCamera() {
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+
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+ orthoCamera.position.copy( camera.position );
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+ orthoCamera.rotation.copy( camera.rotation );
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+
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+ const scale = camera.position.distanceTo( controls.target ) / 2.0;
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+ let aspect = window.innerWidth / window.innerHeight;
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+ orthoCamera.left = - aspect * scale;
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+ orthoCamera.right = aspect * scale;
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+ orthoCamera.bottom = - scale;
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+ orthoCamera.top = scale;
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+ orthoCamera.near = camera.near;
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+ orthoCamera.far = camera.far;
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+ orthoCamera.updateProjectionMatrix();
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+
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+}
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+
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+function animate() {
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+
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+ requestAnimationFrame( animate );
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+
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+ tiles.errorTarget = params.errorTarget;
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+ switch( parseFloat( params.shadowStrategy ) ) {
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+
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+ case NONE:
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+ tiles.displayActiveTiles = false;
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+ tiles.autoDisableRendererCulling = true;
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+ tiles.deleteCamera( dirLight.shadow.camera );
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+ break;
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+
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+ case DISPLAY_ACTIVE_TILES:
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+ tiles.displayActiveTiles = true;
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+ tiles.autoDisableRendererCulling = false;
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+ tiles.deleteCamera( dirLight.shadow.camera );
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+ break;
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+
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+ case USE_SHADOW_CAMERA:
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+ tiles.displayActiveTiles = false;
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+ tiles.autoDisableRendererCulling = false;
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+ tiles.setCamera( dirLight.shadow.camera );
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+ tiles.setResolution( dirLight.shadow.camera, dirLight.shadow.mapSize );
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+ break;
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+
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+ }
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+
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+ if ( params.orthographic ) {
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+
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+ tiles.deleteCamera( camera );
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+ tiles.setCamera( orthoCamera );
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+ tiles.setResolutionFromRenderer( orthoCamera, renderer );
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+
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+ } else {
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+
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+ tiles.deleteCamera( orthoCamera );
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+ tiles.setCamera( camera );
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+ tiles.setResolutionFromRenderer( camera, renderer );
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+
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+ }
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+
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+ offsetParent.rotation.set( 0, 0, 0 );
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+ if ( params.up === '-Z' ) {
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+
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+ offsetParent.rotation.x = Math.PI / 2;
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+
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+ }
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+ offsetParent.updateMatrixWorld( true );
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+
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+ // update tiles center
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+ if ( tiles.getBounds( box ) ) {
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+
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+ box.getCenter( tiles.group.position );
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+ tiles.group.position.multiplyScalar( - 1 );
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+
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+ }
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+
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+ // update tiles
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+ window.tiles = tiles;
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+ camera.updateMatrixWorld();
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+ orthoCamera.updateMatrixWorld();
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+ tiles.update();
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+
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+ render();
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+ stats.update();
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+
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+}
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+
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+function render() {
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+
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+ updateOrthoCamera();
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+
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+ renderer.render( scene, params.orthographic ? orthoCamera : camera );
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+
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+}
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Garrett Johnson