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立方缓冲几何体 BoxGeometry 是四边形的原始几何类,它通常使用构造函数所提供的“width”、“height”、“depth”参数来创建立方体或者不规则四边形。。构造器:
BoxGeometry(width : Float, height : Float, depth : Float, widthSegments : Integer, heightSegments : Integer, depthSegments : Integer)
其中:
width — X轴上面的宽度,默认值为 1
height — Y轴上面的高度,默认值为 1
depth — Z轴上面的深度,默认值为 1
widthSegments — (可选)宽度的分段数,默认值是 1
heightSegments — (可选)高度的分段数,默认值是 1
depthSegments — (可选)深度的分段数,默认值是 1
下面的代码将绘制一个线框形状的立方缓冲几何体图像:
<style>
body { margin: 0; display: grid; place-items: center; }
#btnControl { position: absolute; bottom: 20px; }
</style>
<button type="button" id="btnControl">暂停/继续动画</button>
<script type="module">
import * as THREE from 'https://638183.freep.cn/638183/web/ku/three.module.min.js';
const scene = new THREE.Scene;
const camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 0.1, 1000);
camera.position.set(0, 0, 5);
const renderer = new THREE.WebGLRenderer({ antialias: true });
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);
const mesh = new THREE.Mesh(
new THREE.BoxGeometry(), // 立方缓冲几何体
new THREE.MeshBasicMaterial({ wireframe: true }) // 基础材质(线框化)
);
scene.add(mesh);
const clock = new THREE.Clock();
const animate = () => {
requestAnimationFrame(animate);
const delta = clock.getDelta();
mesh.rotation.y -= delta;
renderer.render(scene, camera);
};
window.onresize = () => {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
}
document.onclick = () => clock.running ? clock.stop() : clock.start();
animate();
</script>
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