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my first three js
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| <head> | |
| <title>threejs - basic setup</title> | |
| </head> | |
| <body> | |
| <canvas id ="c"></canvas> | |
| </body> | |
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| const canvas = document.querySelector('#c'); | |
| // renderer | |
| const renderer = new THREE.WebGLRenderer({ canvas }) | |
| const fov = 75 // field of view | |
| const aspect = 2 | |
| const near = 0.1 | |
| const far = 5 | |
| // camera | |
| const camera = new THREE.PerspectiveCamera(fov, aspect, near, far) | |
| camera.position.z = 2; | |
| // scene | |
| const scene = new THREE.Scene(); | |
| // box | |
| const boxWidth = 1; | |
| const boxHeight = 1; | |
| const boxDepth = 1; | |
| const geometry = new THREE.BoxGeometry(boxWidth, boxHeight, boxDepth); | |
| // const material = new THREE.MeshBasicMaterial({color: 0x44aa88}); | |
| { | |
| const color = 0xFFFFFF; | |
| const intensity = 1; | |
| const light = new THREE.DirectionalLight(color, intensity); | |
| light.position.set(-1, 2, 4); | |
| scene.add(light); | |
| } | |
| // const material = new THREE.MeshPhongMaterial({color: 0x44aa88}); | |
| // const cube = new THREE.Mesh(geometry, material); | |
| // scene.add(cube); | |
| function makeInstance(geometry, color, x) { | |
| const material = new THREE.MeshPhongMaterial({color}); | |
| const cube = new THREE.Mesh(geometry, material); | |
| scene.add(cube); | |
| cube.position.x = x; | |
| return cube; | |
| } | |
| const cubes = [ | |
| makeInstance(geometry, 0x44aa88, 0), | |
| makeInstance(geometry, 0x8844aa, -2), | |
| makeInstance(geometry, 0xaa8844, 2), | |
| ]; | |
| function render(time) { | |
| time *= 0.001 | |
| cubes.forEach((cube, ndx) => { | |
| const speed = 1 + ndx * .1; | |
| const rot = time * speed; | |
| cube.rotation.x = rot; | |
| cube.rotation.y = rot; | |
| }); | |
| renderer.render(scene, camera); | |
| requestAnimationFrame(render) | |
| } | |
| requestAnimationFrame(render) | |
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| <script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/84/three.min.js"></script> |
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| body { | |
| margin: 0; | |
| overflow: hidden; | |
| } | |
| canvas{ | |
| background: red; | |
| } |
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