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