与网格不同,使用 Sprite.scale
并不能将其渲染为镜像。建议的方法是通过设置 Texture.repeat
为 (-1, 1)
和 Texture.center
为 (0.5, 0.5)
,来通过转换纹理坐标来实现。
var camera, scene, renderer;
init();
animate();
function init() {
camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 0.01, 10 );
camera.position.z = 1;
scene = new THREE.Scene();
var loader = new THREE.TextureLoader();
var map = loader.load( 'https://threejs.org/examples/textures/uv_grid_opengl.jpg' );
map.center.set( 0.5, 0.5 );
map.repeat.set( - 1, 1 );
var material = new THREE.SpriteMaterial( { map: map } );
var sprite = new THREE.Sprite( material );
scene.add( sprite );
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setSize( window.innerWidth, window.innerHeight );
document.body.appendChild( renderer.domElement );
}
function animate() {
requestAnimationFrame( animate );
renderer.render( scene, camera );
}
body {
margin: 0;
}
canvas {
display: block;
}
<script src="https://cdn.jsdelivr.net/npm/three@0.116.1/build/three.js"></script>