<!-- SOLIDIVISM · part 184 -->
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		 */
		this.specularMap = null;

		/**
		 * The alpha map is a grayscale texture that controls the opacity across the
		 * surface (black: fully transparent; white: fully opaque).
		 *
		 * Only the color of the texture is used, ignoring the alpha channel if one
		 * exists. For RGB and RGBA textures, the renderer will use the green channel
		 * when sampling this texture due to the extra bit of precision provided for
		 * green in DXT-compressed and uncompressed RGB 565 formats. Luminance-only and
		 * luminance/alpha textures will also still work as expected.
		 *
		 * `alphaMap` represents non-color data. Any texture assigned must have
		 * `texture.colorSpace = NoColorSpace` (default).
		 *
		 * @type {?Texture}
		 * @default null
		 */
		this.alphaMap = null;

		/**
		 * The environment map.
		 *
		 * `envMap` represents luminance data, and the texture must be assigned
		 * a {@link Texture#colorSpace}. Most `envMap` textures set
		 * `texture.colorSpace = LinearSRGBColorSpace` and use float-type formats
		 * such as `.exr` or `.hdr`.
		 *
		 * @type {?Texture}
		 * @default null
		 */
		this.envMap = null;

		/**
		 * The rotation of the environment map in radians.
		 *
		 * @type {Euler}
		 * @default (0,0,0)
		 */
		this.envMapRotation = new Euler();

		/**
		 * How to combine the result of the surface's color with the environment map, if any.
		 *
		 * When set to `MixOperation`, the {@link MeshBasicMaterial#reflectivity} is used to
		 * blend between the two colors.
		 *
		 * @type {(MultiplyOperation|MixOperation|AddOperation)}
		 * @default MultiplyOperation
		 */
		this.combine = MultiplyOperation;

		/**
		 * How much the environment map affects the surface.
		 * The valid range is between `0` (no reflections) and `1` (full reflections).
		 *
		 * @type {number}
		 * @default 1
		 */
		this.reflectivity = 1;

		/**
		 * The index of refraction (IOR) of air (approximately 1) divided by the
		 * index of refraction of the material. It is used with environment mapping
		 * modes {@link CubeRefractionMapping} and {@link EquirectangularRefractionMapping}.
		 * The refraction ratio should not exceed `1`.
		 *
		 * @type {number}
		 * @default 0.98
		 */
		this.refractionRatio = 0.98;

		/**
		 * Renders the geometry as a wireframe.
		 *
		 * @type {boolean}
		 * @default false
		 */
		this.wireframe = false;

		/**
		 * Controls the thickness of the wireframe.
		 *
		 * Can only be used with {@link SVGRenderer}.
		 *
		 * @type {number}
		 * @default 1
		 */
		this.wireframeLinewidth = 1;

		/**
		 * Defines appearance of wireframe ends.
		 *
		 * Can only be used with {@link SVGRenderer}.
		 *
		 * @type {('round'|'bevel'|'miter')}
		 * @default 'round'
		 */
		this.wireframeLinecap = 'round';

		/**
		 * Defines appearance of wireframe joints.
		 *
		 * Can only be used with {@link SVGRenderer}.
		 *
		 * @type {('round'|'bevel'|'miter')}
		 * @default 'round'
		 */
		this.wireframeLinejoin = 'round';

		/**
		 * Whether the material is affected by fog or not.
		 *
		 * @type {boolean}
		 * @default true
		 */
		this.fog = true;

		this.setValues( parameters );

	}

	copy( source ) {

		super.copy( source );

		this.color.copy( source.color );

		this.map = source.map;

		this.lightMap = source.lightMap;
		this.lightMapIntensity = source.lightMapIntensity;

		this.aoMap = source.aoMap;
		this.aoMapIntensity = source.aoMapIntensity;

		this.specularMap = source.specularMap;

		this.alphaMap = source.alphaMap;

		this.envMap = source.envMap;
		this.envMapRotation.copy( source.envMapRotation );
		this.combine = source.combine;
		this.reflectivity = source.reflectivity;
		this.refractionRatio = source.refractionRatio;

		this.wireframe = source.wireframe;
		this.wireframeLinewidth = source.wireframeLinewidth;
		this.wireframeLinecap = source.wireframeLinecap;
		this.wireframeLinejoin = source.wireframeLinejoin;

		this.fog = source.fog;

		return this;

	}

}

const _inverseMatrix$3 = /*@__PURE__*/ new Matrix4();
const _ray$3 = /*@__PURE__*/ new Ray();
const _sphere$6 = /*@__PURE__*/ new Sphere();
const _sphereHitAt = /*@__PURE__*/ new Vector3();

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

const _tempA = /*@__PURE__*/ new Vector3();
const _morphA = /*@__PURE__*/ new Vector3();

const _intersectionPoint = /*@__PURE__*/ new Vector3();
const _intersectionPointWorld = /*@__PURE__*/ new Vector3();

/**
 * Class representing triangular polygon mesh based objects.
 *
 * ```js
 * const geometry = new THREE.BoxGeometry( 1, 1, 1 );
 * const material = new THREE.MeshBasicMaterial( { color: 0xffff00 } );
 * const mesh = new THREE.Mesh( geometry, material );
 * scene.add( mesh );
 * ```
 *
 * @augments Object3D
 */
class Mesh extends Object3D {

	/**
	 * Constructs a new mesh.
	 *
	 * @param {BufferGeometry} [geometry] - The mesh geometry.
	 * @param {Material|Array<Material>} [material] - The mesh