import { Vector2 } from './Vector2';
import { Vector3 } from './Vector3';
import { Plane } from './Plane';
import { Box3 } from './Box3';

import { InterleavedBufferAttribute } from '../core/InterleavedBufferAttribute';
import { BufferAttribute } from '../core/BufferAttribute';

export class Triangle {
	constructor(a?: Vector3, b?: Vector3, c?: Vector3);

	/**
	 * @default new THREE.Vector3()
	 */
	a: Vector3;

	/**
	 * @default new THREE.Vector3()
	 */
	b: Vector3;

	/**
	 * @default new THREE.Vector3()
	 */
	c: Vector3;

	set(a: Vector3, b: Vector3, c: Vector3): Triangle;
	setFromPointsAndIndices(points: Vector3[], i0: number, i1: number, i2: number): this;
	setFromAttributeAndIndices(attribute: BufferAttribute | InterleavedBufferAttribute, i0: number, i1: number, i2: number): this;
	clone(): this;
	copy(triangle: Triangle): this;
	getArea(): number;
	getMidpoint(target: Vector3): Vector3;
	getNormal(target: Vector3): Vector3;
	getPlane(target: Plane): Plane;
	getBarycoord(point: Vector3, target: Vector3): Vector3;
	getUV(point: Vector3, uv1: Vector2, uv2: Vector2, uv3: Vector2, target: Vector2): Vector2;
	containsPoint(point: Vector3): boolean;
	intersectsBox(box: Box3): boolean;
	isFrontFacing(direction: Vector3): boolean;
	closestPointToPoint(point: Vector3, target: Vector3): Vector3;
	equals(triangle: Triangle): boolean;

	static getNormal(a: Vector3, b: Vector3, c: Vector3, target: Vector3): Vector3;
	static getBarycoord(point: Vector3, a: Vector3, b: Vector3, c: Vector3, target: Vector3): Vector3;
	static containsPoint(point: Vector3, a: Vector3, b: Vector3, c: Vector3): boolean;
	static getUV(point: Vector3, p1: Vector3, p2: Vector3, p3: Vector3, uv1: Vector2, uv2: Vector2, uv3: Vector2, target: Vector2): Vector2;
	static isFrontFacing(a: Vector3, b: Vector3, c: Vector3, direction: Vector3): boolean;
}