three.js几何体之立方缓冲几何体
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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