116 lines
1.7 KiB
JavaScript
116 lines
1.7 KiB
JavaScript
import { Vector3 } from './Vector3.js';
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import * as MathUtils from './MathUtils.js';
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const _startP = /*@__PURE__*/ new Vector3();
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const _startEnd = /*@__PURE__*/ new Vector3();
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class Line3 {
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constructor( start = new Vector3(), end = new Vector3() ) {
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this.start = start;
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this.end = end;
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}
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set( start, end ) {
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this.start.copy( start );
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this.end.copy( end );
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return this;
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}
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copy( line ) {
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this.start.copy( line.start );
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this.end.copy( line.end );
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return this;
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}
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getCenter( target ) {
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return target.addVectors( this.start, this.end ).multiplyScalar( 0.5 );
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}
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delta( target ) {
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return target.subVectors( this.end, this.start );
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}
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distanceSq() {
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return this.start.distanceToSquared( this.end );
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}
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distance() {
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return this.start.distanceTo( this.end );
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}
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at( t, target ) {
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return this.delta( target ).multiplyScalar( t ).add( this.start );
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}
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closestPointToPointParameter( point, clampToLine ) {
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_startP.subVectors( point, this.start );
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_startEnd.subVectors( this.end, this.start );
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const startEnd2 = _startEnd.dot( _startEnd );
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const startEnd_startP = _startEnd.dot( _startP );
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let t = startEnd_startP / startEnd2;
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if ( clampToLine ) {
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t = MathUtils.clamp( t, 0, 1 );
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}
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return t;
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}
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closestPointToPoint( point, clampToLine, target ) {
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const t = this.closestPointToPointParameter( point, clampToLine );
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return this.delta( target ).multiplyScalar( t ).add( this.start );
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}
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applyMatrix4( matrix ) {
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this.start.applyMatrix4( matrix );
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this.end.applyMatrix4( matrix );
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return this;
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}
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equals( line ) {
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return line.start.equals( this.start ) && line.end.equals( this.end );
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}
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clone() {
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return new this.constructor().copy( this );
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}
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}
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export { Line3 };
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