| import { Vector3 } from './Vector3.js'; |
| import { _Math } from './Math.js'; |
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| |
| |
| |
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|
| function Line3( start, end ) { |
|
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| this.start = ( start !== undefined ) ? start : new Vector3(); |
| this.end = ( end !== undefined ) ? end : new Vector3(); |
|
|
| } |
|
|
| Object.assign( Line3.prototype, { |
|
|
| set: function ( start, end ) { |
|
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| this.start.copy( start ); |
| this.end.copy( end ); |
|
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| return this; |
|
|
| }, |
|
|
| clone: function () { |
|
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| return new this.constructor().copy( this ); |
|
|
| }, |
|
|
| copy: function ( line ) { |
|
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| this.start.copy( line.start ); |
| this.end.copy( line.end ); |
|
|
| return this; |
|
|
| }, |
|
|
| getCenter: function ( target ) { |
|
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| 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 ) { |
|
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| if ( target === undefined ) { |
|
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| 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 () { |
|
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| return this.start.distanceTo( this.end ); |
|
|
| }, |
|
|
| at: function ( t, target ) { |
|
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| 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 () { |
|
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| var startP = new Vector3(); |
| var startEnd = new Vector3(); |
|
|
| return function closestPointToPointParameter( point, clampToLine ) { |
|
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| 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; |
|
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| if ( clampToLine ) { |
|
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| t = _Math.clamp( t, 0, 1 ); |
|
|
| } |
|
|
| return t; |
|
|
| }; |
|
|
| }(), |
|
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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' ); |
| target = new Vector3(); |
|
|
| } |
|
|
| return this.delta( target ).multiplyScalar( t ).add( this.start ); |
|
|
| }, |
|
|
| applyMatrix4: function ( matrix ) { |
|
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| this.start.applyMatrix4( matrix ); |
| this.end.applyMatrix4( matrix ); |
|
|
| return this; |
|
|
| }, |
|
|
| equals: function ( line ) { |
|
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| return line.start.equals( this.start ) && line.end.equals( this.end ); |
|
|
| } |
|
|
| } ); |
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|
|
| export { Line3 }; |
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|
