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;
}