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136 lines
3.6 KiB
136 lines
3.6 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 - Car</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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<script src="resources/threejs-lessons-helper.js"></script> <!-- you can and should delete this script. it is only used on the site to help with errors -->
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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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renderer.setClearColor(0xAAAAAA);
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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(8, 4, 10);
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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 light = new THREE.DirectionalLight(0xffffff, 1);
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light.position.set(-1, 2, 4);
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scene.add(light);
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}
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{
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const light = new THREE.DirectionalLight(0xffffff, 1);
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light.position.set(1, -2, -4);
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scene.add(light);
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}
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const carWidth = 4;
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const carHeight = 1;
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const carLength = 8;
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const bodyGeometry = new THREE.BoxGeometry(carWidth, carHeight, carLength);
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const bodyMaterial = new THREE.MeshPhongMaterial({color: 0x6688AA});
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const bodyMesh = new THREE.Mesh(bodyGeometry, bodyMaterial);
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scene.add(bodyMesh);
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const wheelRadius = 1;
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const wheelThickness = .5;
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const wheelSegments = 6;
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const wheelGeometry = new THREE.CylinderGeometry(
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wheelRadius, // top radius
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wheelRadius, // bottom radius
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wheelThickness, // height of cylinder
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wheelSegments);
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const wheelMaterial = new THREE.MeshPhongMaterial({color: 0x888888});
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const wheelPositions = [
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[-carWidth / 2 + wheelThickness / 2, -carHeight / 2, carLength / 3],
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[ carWidth / 2 + wheelThickness / 2, -carHeight / 2, carLength / 3],
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[-carWidth / 2 + wheelThickness / 2, -carHeight / 2, -carLength / 3],
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[ carWidth / 2 + wheelThickness / 2, -carHeight / 2, -carLength / 3],
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];
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const wheelMeshes = wheelPositions.map((position) => {
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const mesh = new THREE.Mesh(wheelGeometry, wheelMaterial);
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mesh.position.set(...position);
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mesh.rotation.z = Math.PI * .5;
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scene.add(mesh);
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return mesh;
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});
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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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// const carPosition = [0, 0, 0];
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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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wheelMeshes.forEach((obj) => {
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obj.rotation.x = 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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