局部坐标系下的平移和世界坐标系下的平移
2020-06-23 本文已影响0人
Codifier
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>平移</title>
<style>
body {
margin: 0;
overflow: hidden;
}
</style>
</head>
<body>
<div id="container">
<button id="btn1" style="position: absolute; margin-top: 10px; margin-left: 10px; z-index: 1000;">局部坐标系下的平移</button>
<button id="btn2" style="position: absolute; margin-top: 40px; margin-left: 10px; z-index: 1000;">世界坐标系下的平移</button>
</div>
<script type="module">
import * as THREE from '../three-part/three/build/three.module.js';
import { OrbitControls } from '../three-part/three/examples/jsm/controls/OrbitControls.js';
let camera, orbitControls, scene, renderer;
init();
animate();
function init() {
scene = new THREE.Scene();
scene.background = new THREE.Color(0xcccccc);
renderer = new THREE.WebGLRenderer({antialias: true});
renderer.setPixelRatio(window.devicePixelRatio);
renderer.setSize(window.innerWidth, window.innerHeight);
document.getElementById("container").appendChild(renderer.domElement);
camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 0.1, 10000);
camera.position.set( 0, 50, 50 );
orbitControls = new OrbitControls(camera, renderer.domElement);
orbitControls.enableDamping = true;
orbitControls.dampingFactor = 0.05;
orbitControls.screenSpacePanning = false;
orbitControls.maxPolarAngle = Math.PI / 2;
const ambientLight = new THREE.AmbientLight(0xffffff, 0.4);
scene.add(ambientLight);
let directionalLight = new THREE.DirectionalLight("#ffffff");
directionalLight.position.set(0, 30, 0);
scene.add(directionalLight);
let planeGeometry = new THREE.PlaneGeometry(100, 100, 1, 1);
let planeMaterial = new THREE.MeshLambertMaterial({
color: 0x666666
});
let plane = new THREE.Mesh(planeGeometry, planeMaterial);
plane.receiveShadow = true;
plane.rotation.x = -0.5 * Math.PI;
scene.add(plane);
let cubeGeometry = new THREE.BoxGeometry(8, 8, 8);
let cubeRedMaterial = new THREE.MeshLambertMaterial({
color: 0xff0000
});
let cubeRed = new THREE.Mesh(cubeGeometry, cubeRedMaterial);
cubeRed.position.set(0, 4, -10);
cubeRed.rotation.set(0, Math.PI/4, 0);
const boxRedLocalAxes = new THREE.AxesHelper(10);
cubeRed.add(boxRedLocalAxes);
scene.add(cubeRed);
let cubeBlueMaterial = new THREE.MeshLambertMaterial({
color: 0x0000ff
});
let cubeBlue = new THREE.Mesh(cubeGeometry, cubeBlueMaterial);
cubeBlue.position.set(0, 4, 10);
cubeBlue.rotation.set(0, Math.PI/4, 0);
const boxBlueLocalAxes = new THREE.AxesHelper(10);
cubeBlue.add(boxBlueLocalAxes);
scene.add(cubeBlue);
const worldAxes = new THREE.AxesHelper(15);
scene.add(worldAxes);
window.addEventListener('resize', onWindowResize, false);
document.getElementById("btn1").onclick = () => {
cubeRed.translateX(1);
};
document.getElementById("btn2").onclick = () => {
cubeBlue.position.add(new THREE.Vector3(1, 0, 0));
};
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
}
function animate() {
requestAnimationFrame(animate);
orbitControls.update();
render();
}
function render() {
renderer.render(scene, camera);
}
</script>
</body>
</html>
