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import { Sphere } from '../math/Sphere.js';
import { Ray } from '../math/Ray.js';
import { Matrix4 } from '../math/Matrix4.js';
import { Object3D } from '../core/Object3D.js';
import { Vector3 } from '../math/Vector3.js';
import { PointsMaterial } from '../materials/PointsMaterial.js';
import { BufferGeometry } from '../core/BufferGeometry.js';
/**
* @author alteredq / http://alteredqualia.com/
*/
function Points( geometry, material ) {
Object3D.call( this );
this.type = 'Points';
this.geometry = geometry !== undefined ? geometry : new BufferGeometry();
this.material = material !== undefined ? material : new PointsMaterial( { color: Math.random() * 0xffffff } );
}
Points.prototype = Object.assign( Object.create( Object3D.prototype ), {
constructor: Points,
isPoints: true,
raycast: ( function () {
var inverseMatrix = new Matrix4();
var ray = new Ray();
var sphere = new Sphere();
return function raycast( raycaster, intersects ) {
var object = this;
var geometry = this.geometry;
var matrixWorld = this.matrixWorld;
var threshold = raycaster.params.Points.threshold;
// Checking boundingSphere distance to ray
if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();
sphere.copy( geometry.boundingSphere );
sphere.applyMatrix4( matrixWorld );
sphere.radius += threshold;
if ( raycaster.ray.intersectsSphere( sphere ) === false ) return;
//
inverseMatrix.getInverse( matrixWorld );
ray.copy( raycaster.ray ).applyMatrix4( inverseMatrix );
var localThreshold = threshold / ( ( this.scale.x + this.scale.y + this.scale.z ) / 3 );
var localThresholdSq = localThreshold * localThreshold;
var position = new Vector3();
var intersectPoint = new Vector3();
function testPoint( point, index ) {
var rayPointDistanceSq = ray.distanceSqToPoint( point );
if ( rayPointDistanceSq < localThresholdSq ) {
ray.closestPointToPoint( point, intersectPoint );
intersectPoint.applyMatrix4( matrixWorld );
var distance = raycaster.ray.origin.distanceTo( intersectPoint );
if ( distance < raycaster.near || distance > raycaster.far ) return;
intersects.push( {
distance: distance,
distanceToRay: Math.sqrt( rayPointDistanceSq ),
point: intersectPoint.clone(),
index: index,
face: null,
object: object
} );
}
}
if ( geometry.isBufferGeometry ) {
var index = geometry.index;
var attributes = geometry.attributes;
var positions = attributes.position.array;
if ( index !== null ) {
var indices = index.array;
for ( var i = 0, il = indices.length; i < il; i ++ ) {
var a = indices[ i ];
position.fromArray( positions, a * 3 );
testPoint( position, a );
}
} else {
for ( var i = 0, l = positions.length / 3; i < l; i ++ ) {
position.fromArray( positions, i * 3 );
testPoint( position, i );
}
}
} else {
var vertices = geometry.vertices;
for ( var i = 0, l = vertices.length; i < l; i ++ ) {
testPoint( vertices[ i ], i );
}
}
};
}() ),
clone: function () {
return new this.constructor( this.geometry, this.material ).copy( this );
}
} );
export { Points };
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