153 lines
2.5 KiB
JavaScript
153 lines
2.5 KiB
JavaScript
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import { Vector3 } from './Vector3.js';
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import { _Math } from './Math.js';
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/**
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* @author bhouston / http://clara.io
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*/
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function Line3( start, end ) {
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this.start = ( start !== undefined ) ? start : new Vector3();
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this.end = ( end !== undefined ) ? end : new Vector3();
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}
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Object.assign( Line3.prototype, {
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set: function ( 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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clone: function () {
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return new this.constructor().copy( this );
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},
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copy: function ( 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: function ( target ) {
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if ( target === undefined ) {
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console.warn( 'THREE.Line3: .getCenter() target is now required' );
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target = new Vector3();
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}
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return target.addVectors( this.start, this.end ).multiplyScalar( 0.5 );
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},
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delta: function ( target ) {
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if ( target === undefined ) {
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console.warn( 'THREE.Line3: .delta() target is now required' );
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target = new Vector3();
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}
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return target.subVectors( this.end, this.start );
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},
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distanceSq: function () {
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return this.start.distanceToSquared( this.end );
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},
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distance: function () {
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return this.start.distanceTo( this.end );
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},
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at: function ( t, target ) {
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if ( target === undefined ) {
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console.warn( 'THREE.Line3: .at() target is now required' );
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target = new Vector3();
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}
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return this.delta( target ).multiplyScalar( t ).add( this.start );
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},
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closestPointToPointParameter: function () {
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var startP = new Vector3();
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var startEnd = new Vector3();
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return function 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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var startEnd2 = startEnd.dot( startEnd );
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var startEnd_startP = startEnd.dot( startP );
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var t = startEnd_startP / startEnd2;
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if ( clampToLine ) {
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t = _Math.clamp( t, 0, 1 );
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}
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return t;
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};
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}(),
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closestPointToPoint: function ( point, clampToLine, target ) {
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var t = this.closestPointToPointParameter( point, clampToLine );
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if ( target === undefined ) {
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console.warn( 'THREE.Line3: .closestPointToPoint() target is now required' );
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target = new Vector3();
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}
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return this.delta( target ).multiplyScalar( t ).add( this.start );
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},
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applyMatrix4: function ( 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: function ( line ) {
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return line.start.equals( this.start ) && line.end.equals( this.end );
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}
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} );
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export { Line3 };
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