56 lines
1.6 KiB
JavaScript
56 lines
1.6 KiB
JavaScript
import * as THREE from 'three';
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class TaperedLink extends THREE.Group {
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constructor(baseMaterial, n1, n2, r1, r2) {
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super();
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const geometry = new THREE.ConeGeometry( 0.75, 1, 32, true );
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const cplane = new THREE.Plane(new THREE.Vector3(0, -1, 0), 0.5);
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const material = baseMaterial.clone();
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// material.clippingPlanes = [ cplane ];
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this.object = new THREE.Mesh( geometry, material );
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this.add( this.object );
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this.update(n1, n2, r1, r2);
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}
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update(n1, n2, r1, r2) {
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const kraw = r1 - r2;
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const k = ( kraw == 0 ) ? 0.001 : kraw;
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let nbase = n1;
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let napex = n2;
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let rbase = r1;
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let rapex = r2;
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if( k < 0 ) {
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nbase = n2;
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napex = n1;
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rbase = r2;
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rapex = r1;
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}
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const l = nbase.v3.distanceTo(napex.v3);
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const h = l * rbase / k;
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//const pos = new THREE.Vector3(0, h/2 - l/2, 0);
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//pos.add(nbase.v3);
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this.object.scale.copy(new THREE.Vector3(rbase, h, rbase));
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this.object.position.copy(nbase.v3);
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this.object.lookAt(napex.v3);
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this.object.rotation.x = Math.PI / 2.0;
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}
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// this.object.material.clippingPlanes[0].normal.y = -1;
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// this.object.material.clippingPlanes[0].constant = l / 2;
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//this.object.position.copy(new THREE.Vector3(0, h/2 - l/2, 0));
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// } else {
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// const h = l * r2 / k;
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// this.object.scale.copy(new THREE.Vector3(r2, h, r2));
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// // this.object.material.clippingPlanes[0].normal.y = 1;
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// // this.object.material.clippingPlanes[0].constant = l / 2;
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// //this.object.position.copy(new THREE.Vector3(0, h / 2 + l / 2, 0));
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// }
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// }
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}
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export { TaperedLink };
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