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Directory : /var/app/wyeth/frontend/node_modules/three/src/objects/

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Current File : /var/app/wyeth/frontend/node_modules/three/src/objects/Sprite.js

import { Vector2 } from '../math/Vector2.js';
import { Vector3 } from '../math/Vector3.js';
import { Matrix4 } from '../math/Matrix4.js';
import { Triangle } from '../math/Triangle.js';
import { Object3D } from '../core/Object3D.js';
import { BufferGeometry } from '../core/BufferGeometry.js';
import { InterleavedBuffer } from '../core/InterleavedBuffer.js';
import { InterleavedBufferAttribute } from '../core/InterleavedBufferAttribute.js';
import { SpriteMaterial } from '../materials/SpriteMaterial.js';

let _geometry;

const _intersectPoint = /*@__PURE__*/ new Vector3();
const _worldScale = /*@__PURE__*/ new Vector3();
const _mvPosition = /*@__PURE__*/ new Vector3();

const _alignedPosition = /*@__PURE__*/ new Vector2();
const _rotatedPosition = /*@__PURE__*/ new Vector2();
const _viewWorldMatrix = /*@__PURE__*/ new Matrix4();

const _vA = /*@__PURE__*/ new Vector3();
const _vB = /*@__PURE__*/ new Vector3();
const _vC = /*@__PURE__*/ new Vector3();

const _uvA = /*@__PURE__*/ new Vector2();
const _uvB = /*@__PURE__*/ new Vector2();
const _uvC = /*@__PURE__*/ new Vector2();

class Sprite extends Object3D {

	constructor( material = new SpriteMaterial() ) {

		super();

		this.isSprite = true;

		this.type = 'Sprite';

		if ( _geometry === undefined ) {

			_geometry = new BufferGeometry();

			const float32Array = new Float32Array( [
				- 0.5, - 0.5, 0, 0, 0,
				0.5, - 0.5, 0, 1, 0,
				0.5, 0.5, 0, 1, 1,
				- 0.5, 0.5, 0, 0, 1
			] );

			const interleavedBuffer = new InterleavedBuffer( float32Array, 5 );

			_geometry.setIndex( [ 0, 1, 2,	0, 2, 3 ] );
			_geometry.setAttribute( 'position', new InterleavedBufferAttribute( interleavedBuffer, 3, 0, false ) );
			_geometry.setAttribute( 'uv', new InterleavedBufferAttribute( interleavedBuffer, 2, 3, false ) );

		}

		this.geometry = _geometry;
		this.material = material;

		this.center = new Vector2( 0.5, 0.5 );

	}

	raycast( raycaster, intersects ) {

		if ( raycaster.camera === null ) {

			console.error( 'THREE.Sprite: "Raycaster.camera" needs to be set in order to raycast against sprites.' );

		}

		_worldScale.setFromMatrixScale( this.matrixWorld );

		_viewWorldMatrix.copy( raycaster.camera.matrixWorld );
		this.modelViewMatrix.multiplyMatrices( raycaster.camera.matrixWorldInverse, this.matrixWorld );

		_mvPosition.setFromMatrixPosition( this.modelViewMatrix );

		if ( raycaster.camera.isPerspectiveCamera && this.material.sizeAttenuation === false ) {

			_worldScale.multiplyScalar( - _mvPosition.z );

		}

		const rotation = this.material.rotation;
		let sin, cos;

		if ( rotation !== 0 ) {

			cos = Math.cos( rotation );
			sin = Math.sin( rotation );

		}

		const center = this.center;

		transformVertex( _vA.set( - 0.5, - 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );
		transformVertex( _vB.set( 0.5, - 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );
		transformVertex( _vC.set( 0.5, 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );

		_uvA.set( 0, 0 );
		_uvB.set( 1, 0 );
		_uvC.set( 1, 1 );

		// check first triangle
		let intersect = raycaster.ray.intersectTriangle( _vA, _vB, _vC, false, _intersectPoint );

		if ( intersect === null ) {

			// check second triangle
			transformVertex( _vB.set( - 0.5, 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );
			_uvB.set( 0, 1 );

			intersect = raycaster.ray.intersectTriangle( _vA, _vC, _vB, false, _intersectPoint );
			if ( intersect === null ) {

				return;

			}

		}

		const distance = raycaster.ray.origin.distanceTo( _intersectPoint );

		if ( distance < raycaster.near || distance > raycaster.far ) return;

		intersects.push( {

			distance: distance,
			point: _intersectPoint.clone(),
			uv: Triangle.getInterpolation( _intersectPoint, _vA, _vB, _vC, _uvA, _uvB, _uvC, new Vector2() ),
			face: null,
			object: this

		} );

	}

	copy( source, recursive ) {

		super.copy( source, recursive );

		if ( source.center !== undefined ) this.center.copy( source.center );

		this.material = source.material;

		return this;

	}

}

function transformVertex( vertexPosition, mvPosition, center, scale, sin, cos ) {

	// compute position in camera space
	_alignedPosition.subVectors( vertexPosition, center ).addScalar( 0.5 ).multiply( scale );

	// to check if rotation is not zero
	if ( sin !== undefined ) {

		_rotatedPosition.x = ( cos * _alignedPosition.x ) - ( sin * _alignedPosition.y );
		_rotatedPosition.y = ( sin * _alignedPosition.x ) + ( cos * _alignedPosition.y );

	} else {

		_rotatedPosition.copy( _alignedPosition );

	}


	vertexPosition.copy( mvPosition );
	vertexPosition.x += _rotatedPosition.x;
	vertexPosition.y += _rotatedPosition.y;

	// transform to world space
	vertexPosition.applyMatrix4( _viewWorldMatrix );

}

export { Sprite };

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