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- <!-- Licensed under a BSD license. See license.html for license -->
- <!DOCTYPE html>
- <html>
- <head>
- <meta charset="utf-8">
- <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes">
- <title>Three.js - Transparency - DoubleSide</title>
- <style>
- html, body {
- height: 100%;
- margin: 0;
- }
- #c {
- width: 100%;
- height: 100%;
- display: block;
- }
- </style>
- </head>
- <body>
- <canvas id="c"></canvas>
- </body>
- <script type="importmap">
- {
- "imports": {
- "three": "../../build/three.module.js",
- "three/addons/": "../../examples/jsm/"
- }
- }
- </script>
- <script type="module">
- import * as THREE from 'three';
- import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
- function main() {
- const canvas = document.querySelector( '#c' );
- const renderer = new THREE.WebGLRenderer( { antialias: true, canvas } );
- const fov = 75;
- const aspect = 2; // the canvas default
- const near = 0.1;
- const far = 25;
- const camera = new THREE.PerspectiveCamera( fov, aspect, near, far );
- camera.position.z = 4;
- const controls = new OrbitControls( camera, canvas );
- controls.target.set( 0, 0, 0 );
- controls.update();
- const scene = new THREE.Scene();
- scene.background = new THREE.Color( 'white' );
- function addLight( ...pos ) {
- const color = 0xFFFFFF;
- const intensity = 3;
- const light = new THREE.DirectionalLight( color, intensity );
- light.position.set( ...pos );
- scene.add( light );
- }
- addLight( - 1, 2, 4 );
- addLight( 1, - 1, - 2 );
- const boxWidth = 1;
- const boxHeight = 1;
- const boxDepth = 1;
- const geometry = new THREE.BoxGeometry( boxWidth, boxHeight, boxDepth );
- function makeInstance( geometry, color, x, y, z ) {
- const material = new THREE.MeshPhongMaterial( {
- color,
- opacity: 0.5,
- transparent: true,
- side: THREE.DoubleSide,
- } );
- const cube = new THREE.Mesh( geometry, material );
- scene.add( cube );
- cube.position.set( x, y, z );
- return cube;
- }
- function hsl( h, s, l ) {
- return ( new THREE.Color() ).setHSL( h, s, l );
- }
- {
- const d = 0.8;
- makeInstance( geometry, hsl( 0 / 8, 1, .5 ), - d, - d, - d );
- makeInstance( geometry, hsl( 1 / 8, 1, .5 ), d, - d, - d );
- makeInstance( geometry, hsl( 2 / 8, 1, .5 ), - d, d, - d );
- makeInstance( geometry, hsl( 3 / 8, 1, .5 ), d, d, - d );
- makeInstance( geometry, hsl( 4 / 8, 1, .5 ), - d, - d, d );
- makeInstance( geometry, hsl( 5 / 8, 1, .5 ), d, - d, d );
- makeInstance( geometry, hsl( 6 / 8, 1, .5 ), - d, d, d );
- makeInstance( geometry, hsl( 7 / 8, 1, .5 ), d, d, d );
- }
- function resizeRendererToDisplaySize( renderer ) {
- const canvas = renderer.domElement;
- const width = canvas.clientWidth;
- const height = canvas.clientHeight;
- const needResize = canvas.width !== width || canvas.height !== height;
- if ( needResize ) {
- renderer.setSize( width, height, false );
- }
- return needResize;
- }
- let renderRequested = false;
- function render() {
- renderRequested = undefined;
- if ( resizeRendererToDisplaySize( renderer ) ) {
- const canvas = renderer.domElement;
- camera.aspect = canvas.clientWidth / canvas.clientHeight;
- camera.updateProjectionMatrix();
- }
- renderer.render( scene, camera );
- }
- render();
- function requestRenderIfNotRequested() {
- if ( ! renderRequested ) {
- renderRequested = true;
- requestAnimationFrame( render );
- }
- }
- controls.addEventListener( 'change', requestRenderIfNotRequested );
- window.addEventListener( 'resize', requestRenderIfNotRequested );
- }
- main();
- </script>
- </html>
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