| import { Vector3 } from '../math/Vector3.js'; |
| import { Object3D } from '../core/Object3D.js'; |
| import { Line } from '../objects/Line.js'; |
| import { Float32BufferAttribute } from '../core/BufferAttribute.js'; |
| import { BufferGeometry } from '../core/BufferGeometry.js'; |
| import { LineBasicMaterial } from '../materials/LineBasicMaterial.js'; |
|
|
| const _v1 = new Vector3(); |
| const _v2 = new Vector3(); |
| const _v3 = new Vector3(); |
|
|
| class DirectionalLightHelper extends Object3D { |
|
|
| constructor( light, size, color ) { |
|
|
| super(); |
|
|
| this.light = light; |
|
|
| this.matrix = light.matrixWorld; |
| this.matrixAutoUpdate = false; |
|
|
| this.color = color; |
|
|
| this.type = 'DirectionalLightHelper'; |
|
|
| if ( size === undefined ) size = 1; |
|
|
| let geometry = new BufferGeometry(); |
| geometry.setAttribute( 'position', new Float32BufferAttribute( [ |
| - size, size, 0, |
| size, size, 0, |
| size, - size, 0, |
| - size, - size, 0, |
| - size, size, 0 |
| ], 3 ) ); |
|
|
| const material = new LineBasicMaterial( { fog: false, toneMapped: false } ); |
|
|
| this.lightPlane = new Line( geometry, material ); |
| this.add( this.lightPlane ); |
|
|
| geometry = new BufferGeometry(); |
| geometry.setAttribute( 'position', new Float32BufferAttribute( [ 0, 0, 0, 0, 0, 1 ], 3 ) ); |
|
|
| this.targetLine = new Line( geometry, material ); |
| this.add( this.targetLine ); |
|
|
| this.update(); |
|
|
| } |
|
|
| dispose() { |
|
|
| this.lightPlane.geometry.dispose(); |
| this.lightPlane.material.dispose(); |
| this.targetLine.geometry.dispose(); |
| this.targetLine.material.dispose(); |
|
|
| } |
|
|
| update() { |
|
|
| this.light.updateWorldMatrix( true, false ); |
| this.light.target.updateWorldMatrix( true, false ); |
|
|
| _v1.setFromMatrixPosition( this.light.matrixWorld ); |
| _v2.setFromMatrixPosition( this.light.target.matrixWorld ); |
| _v3.subVectors( _v2, _v1 ); |
|
|
| this.lightPlane.lookAt( _v2 ); |
|
|
| if ( this.color !== undefined ) { |
|
|
| this.lightPlane.material.color.set( this.color ); |
| this.targetLine.material.color.set( this.color ); |
|
|
| } else { |
|
|
| this.lightPlane.material.color.copy( this.light.color ); |
| this.targetLine.material.color.copy( this.light.color ); |
|
|
| } |
|
|
| this.targetLine.lookAt( _v2 ); |
| this.targetLine.scale.z = _v3.length(); |
|
|
| } |
|
|
| } |
|
|
|
|
| export { DirectionalLightHelper }; |
|
|
