36 lines
1.1 KiB
JavaScript
36 lines
1.1 KiB
JavaScript
import * as THREE from 'three';
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import { SUBTRACTION, Brush, Evaluator } from 'three-bvh-csg';
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export class 六角螺丝帽 extends THREE.BufferGeometry {
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constructor(radius = 1, height = 0.5, holeRadius = 0.6) {
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super();
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this.parameters = {
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radius: radius,
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height: height,
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holeRadius: holeRadius
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};
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this.buildGeometry();
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}
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buildGeometry() {
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const { radius, height, holeRadius } = this.parameters;
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// 创建螺丝帽主体 (六棱柱)
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const hexagonBrush = new Brush(new THREE.CylinderGeometry(radius, radius, height, 6));
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// 创建内部的孔洞 (圆柱体)
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const holeBrush = new Brush(new THREE.CylinderGeometry(holeRadius, holeRadius, height + 0.1, 128));
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// 执行布尔运算 (差集)
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const resultBrush = new Evaluator().evaluate(hexagonBrush, holeBrush, SUBTRACTION);
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// 将布尔运算结果应用到当前 BufferGeometry
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this.copy(resultBrush.geometry);
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this.computeVertexNormals(); // 计算法线
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}
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}
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export default { 六角螺丝帽 };
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