File size: 2,012 Bytes
b797337 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 | import { Vector3 } from '../math/Vector3.js';
import { Object3D } from '../core/Object3D.js';
import { LineSegments } from '../objects/LineSegments.js';
import { LineBasicMaterial } from '../materials/LineBasicMaterial.js';
import { Float32BufferAttribute } from '../core/BufferAttribute.js';
import { BufferGeometry } from '../core/BufferGeometry.js';
const _vector = /*@__PURE__*/ new Vector3();
class SpotLightHelper extends Object3D {
constructor( light, color ) {
super();
this.light = light;
this.matrix = light.matrixWorld;
this.matrixAutoUpdate = false;
this.color = color;
this.type = 'SpotLightHelper';
const geometry = new BufferGeometry();
const positions = [
0, 0, 0, 0, 0, 1,
0, 0, 0, 1, 0, 1,
0, 0, 0, - 1, 0, 1,
0, 0, 0, 0, 1, 1,
0, 0, 0, 0, - 1, 1
];
for ( let i = 0, j = 1, l = 32; i < l; i ++, j ++ ) {
const p1 = ( i / l ) * Math.PI * 2;
const p2 = ( j / l ) * Math.PI * 2;
positions.push(
Math.cos( p1 ), Math.sin( p1 ), 1,
Math.cos( p2 ), Math.sin( p2 ), 1
);
}
geometry.setAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );
const material = new LineBasicMaterial( { fog: false, toneMapped: false } );
this.cone = new LineSegments( geometry, material );
this.add( this.cone );
this.update();
}
dispose() {
this.cone.geometry.dispose();
this.cone.material.dispose();
}
update() {
this.light.updateWorldMatrix( true, false );
this.light.target.updateWorldMatrix( true, false );
const coneLength = this.light.distance ? this.light.distance : 1000;
const coneWidth = coneLength * Math.tan( this.light.angle );
this.cone.scale.set( coneWidth, coneWidth, coneLength );
_vector.setFromMatrixPosition( this.light.target.matrixWorld );
this.cone.lookAt( _vector );
if ( this.color !== undefined ) {
this.cone.material.color.set( this.color );
} else {
this.cone.material.color.copy( this.light.color );
}
}
}
export { SpotLightHelper };
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