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117 lines
2.8 KiB
117 lines
2.8 KiB
3 years ago
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<!-- Licensed under a BSD license. See license.html for license -->
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes">
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<title>Three.js - Scenegraph - Sun Earth</title>
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<style>
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html, body {
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height: 100%;
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margin: 0;
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}
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#c {
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width: 100%;
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height: 100%;
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display: block;
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}
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</style>
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</head>
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<body>
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<canvas id="c"></canvas>
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</body>
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<!-- Import maps polyfill -->
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<!-- Remove this when import maps will be widely supported -->
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<script async src="https://unpkg.com/es-module-shims@1.3.6/dist/es-module-shims.js"></script>
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<script type="importmap">
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{
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"imports": {
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"three": "../../build/three.module.js"
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}
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}
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</script>
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<script type="module">
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import * as THREE from 'three';
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function main() {
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const canvas = document.querySelector('#c');
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const renderer = new THREE.WebGLRenderer({canvas});
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const fov = 40;
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const aspect = 2; // the canvas default
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const near = 0.1;
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const far = 1000;
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const camera = new THREE.PerspectiveCamera(fov, aspect, near, far);
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camera.position.set(0, 150, 0);
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camera.up.set(0, 0, 1);
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camera.lookAt(0, 0, 0);
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const scene = new THREE.Scene();
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{
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const color = 0xFFFFFF;
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const intensity = 3;
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const light = new THREE.PointLight(color, intensity);
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scene.add(light);
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}
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const objects = [];
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const radius = 1;
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const widthSegments = 6;
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const heightSegments = 6;
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const sphereGeometry = new THREE.SphereGeometry(
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radius, widthSegments, heightSegments);
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const sunMaterial = new THREE.MeshPhongMaterial({emissive: 0xFFFF00});
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const sunMesh = new THREE.Mesh(sphereGeometry, sunMaterial);
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sunMesh.scale.set(5, 5, 5);
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scene.add(sunMesh);
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objects.push(sunMesh);
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const earthMaterial = new THREE.MeshPhongMaterial({color: 0x2233FF, emissive: 0x112244});
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const earthMesh = new THREE.Mesh(sphereGeometry, earthMaterial);
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earthMesh.position.x = 10;
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sunMesh.add(earthMesh);
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objects.push(earthMesh);
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function resizeRendererToDisplaySize(renderer) {
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const canvas = renderer.domElement;
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const width = canvas.clientWidth;
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const height = canvas.clientHeight;
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const needResize = canvas.width !== width || canvas.height !== height;
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if (needResize) {
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renderer.setSize(width, height, false);
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}
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return needResize;
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}
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function render(time) {
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time *= 0.001;
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if (resizeRendererToDisplaySize(renderer)) {
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const canvas = renderer.domElement;
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camera.aspect = canvas.clientWidth / canvas.clientHeight;
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camera.updateProjectionMatrix();
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}
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objects.forEach((obj) => {
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obj.rotation.y = time;
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});
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renderer.render(scene, camera);
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requestAnimationFrame(render);
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}
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requestAnimationFrame(render);
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}
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main();
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</script>
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</html>
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