import { BufferAttribute } from './BufferAttribute';
import { Box3 } from './../math/Box3';
import { Sphere } from './../math/Sphere';
import { Matrix4 } from './../math/Matrix4';
import { Vector2 } from './../math/Vector2';
import { Vector3 } from './../math/Vector3';
import { EventDispatcher } from './EventDispatcher';
import { InterleavedBufferAttribute } from './InterleavedBufferAttribute';

/**
 * This is a superefficent class for geometries because it saves all data in buffers.
 * It reduces memory costs and cpu cycles. But it is not as easy to work with because of all the necessary buffer calculations.
 * It is mainly interesting when working with static objects.
 *
 * see {@link https://github.com/mrdoob/three.js/blob/master/src/core/BufferGeometry.js|src/core/BufferGeometry.js}
 */
export class BufferGeometry extends EventDispatcher {

	/**
	 * This creates a new BufferGeometry. It also sets several properties to an default value.
	 */
	constructor();

	static MaxIndex: number;

	/**
	 * Unique number of this buffergeometry instance
	 */
	id: number;
	uuid: string;

	/**
	 * @default ''
	 */
	name: string;

	/**
	 * @default 'BufferGeometry'
	 */
	type: string;

	/**
	 * @default null
	 */
	index: BufferAttribute | null;

	/**
	 * @default {}
	 */
	attributes: {
		[name: string]: BufferAttribute | InterleavedBufferAttribute;
	};

	/**
	 * @default {}
	 */
	morphAttributes: {
		[name: string]: ( BufferAttribute | InterleavedBufferAttribute )[];
	};

	/**
	 * @default false
	 */
	morphTargetsRelative: boolean;

	/**
	 * @default []
	 */
	groups: { start: number; count: number; materialIndex?: number }[];

	/**
	 * @default null
	 */
	boundingBox: Box3 | null;

	/**
	 * @default null
	 */
	boundingSphere: Sphere | null;

	/**
	 * @default { start: 0, count: Infinity }
	 */
	drawRange: { start: number; count: number };

	/**
	 * @default {}
	 */
	userData: {[key: string]: any};
	readonly isBufferGeometry: true;

	getIndex(): BufferAttribute | null;
	setIndex( index: BufferAttribute | number[] | null ): BufferGeometry;

	setAttribute( name: string, attribute: BufferAttribute | InterleavedBufferAttribute ): BufferGeometry;
	getAttribute( name: string ): BufferAttribute | InterleavedBufferAttribute;
	deleteAttribute( name: string ): BufferGeometry;
	hasAttribute( name: string ): boolean;

	addGroup( start: number, count: number, materialIndex?: number ): void;
	clearGroups(): void;

	setDrawRange( start: number, count: number ): void;

	/**
	 * Bakes matrix transform directly into vertex coordinates.
	 */
	applyMatrix4( matrix: Matrix4 ): BufferGeometry;

	rotateX( angle: number ): BufferGeometry;
	rotateY( angle: number ): BufferGeometry;
	rotateZ( angle: number ): BufferGeometry;
	translate( x: number, y: number, z: number ): BufferGeometry;
	scale( x: number, y: number, z: number ): BufferGeometry;
	lookAt( v: Vector3 ): void;

	center(): BufferGeometry;

	setFromPoints( points: Vector3[] | Vector2[] ): BufferGeometry;

	/**
	 * Computes bounding box of the geometry, updating Geometry.boundingBox attribute.
	 * Bounding boxes aren't computed by default. They need to be explicitly computed, otherwise they are null.
	 */
	computeBoundingBox(): void;

	/**
	 * Computes bounding sphere of the geometry, updating Geometry.boundingSphere attribute.
	 * Bounding spheres aren't' computed by default. They need to be explicitly computed, otherwise they are null.
	 */
	computeBoundingSphere(): void;

	/**
	 * Computes and adds tangent attribute to this geometry.
	 */
	computeTangents(): void;

	/**
	 * Computes vertex normals by averaging face normals.
	 */
	computeVertexNormals(): void;

	merge( geometry: BufferGeometry, offset?: number ): BufferGeometry;
	normalizeNormals(): void;

	toNonIndexed(): BufferGeometry;

	toJSON(): any;
	clone(): BufferGeometry;
	copy( source: BufferGeometry ): this;

	/**
	 * Disposes the object from memory.
	 * You need to call this when you want the bufferGeometry removed while the application is running.
	 */
	dispose(): void;

	/**
	 * @deprecated Use {@link BufferGeometry#groups .groups} instead.
	 */
	drawcalls: any;

	/**
	 * @deprecated Use {@link BufferGeometry#groups .groups} instead.
	 */
	offsets: any;

	/**
	 * @deprecated Use {@link BufferGeometry#setIndex .setIndex()} instead.
	 */
	addIndex( index: any ): void;

	/**
	 * @deprecated Use {@link BufferGeometry#addGroup .addGroup()} instead.
	 */
	addDrawCall( start: any, count: any, indexOffset?: any ): void;

	/**
	 * @deprecated Use {@link BufferGeometry#clearGroups .clearGroups()} instead.
	 */
	clearDrawCalls(): void;

	/**
	 * @deprecated Use {@link BufferGeometry#setAttribute .setAttribute()} instead.
	 */
	addAttribute(
		name: string,
		attribute: BufferAttribute | InterleavedBufferAttribute
	): BufferGeometry;

	/**
	 * @deprecated Use {@link BufferGeometry#deleteAttribute .deleteAttribute()} instead.
	 */
	removeAttribute( name: string ): BufferGeometry;

	addAttribute( name: any, array: any, itemSize: any ): any;

}