import type { Box3 } from './Box3';
import type { Vector2 } from './Vector2';
import { Vector3 } from './Vector3';
declare class Triangle {
    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;
    readonly isTriangle = true;
    a: Vector3;
    b: Vector3;
    c: Vector3;
    constructor(a?: Vector3, b?: Vector3, c?: Vector3);
    set(a: Vector3, b: Vector3, c: Vector3): this;
    setFromPointsAndIndices(points: Vector3[], i0: number, i1: number, i2: number): this;
    clone(): Triangle;
    copy(triangle: Triangle): this;
    getArea(): number;
    getMidpoint(target?: Vector3): Vector3;
    getNormal(target: Vector3): Vector3;
    getBarycoord(point: Vector3, target: Vector3): Vector3;
    getUV(point: Vector3, uv1: Vector2, uv2: Vector2, uv3: Vector2, target: Vector2): Vector2;
    containsPoint(point: Vector3): boolean;
    isFrontFacing(direction: Vector3): boolean;
    intersectsBox(box: Box3): boolean;
    closestPointToPoint(p: Vector3, target?: Vector3): Vector3;
    equals(triangle: Triangle): boolean;
}
export { Triangle };