import { mat4, vec3 } from "gl-matrix";
export declare type box = [number, number, number, number, number, number];
/**
 * @example
 * ```typescript
 * const pointWithUECoord = [1, 2, 3];
 * const pointWithGltfCoord = convertPointFromUEToGltf(pointWithUECoord); // [2, 3, -1]
 * ```
 */
export declare const convertPointFromUEToGltf: (point: vec3) => vec3;
export declare const convertPointFromGltfToUE: (point: vec3) => vec3;
export declare const convertPointFromUEToRevit: (point: vec3) => vec3;
export declare const convertPointFromRevitToUE: (point: vec3) => vec3;
/**
 * @example
 * ```typescript
 * const box = [1, 3, 5, 2, 4, 6];
 * const center = getCenter(box) // [1.5, 4.5, 4.5]
 * ```
 */
export declare const getCenter: (boundingBox: box) => vec3;
/**
 * @example
 * ```typescript
 * const boxWithUECoord = [1, 2, 3, 4, 5, 6];
 * const boxWithGltfCoord = convertBoxFromGltfToUE(boxWithUECoord) // [2, 3, -1, 5, 6, -4]
 * ```
 */
export declare const convertBoxFromGltfToUE: (box: box) => box;
export declare const convertBoxFromUEToGltf: (box: box) => box;
export declare const convertBoxFromRevitToUE: (box: box) => box;
export declare const convertBoxFromUEToRevit: (box: box) => box;
export declare const clamp: (value: number, min: number, max: number) => number;
export declare const getEulerAngleFromMatrix: (rotationMatrix: mat4, order: string) => vec3;
export declare const getLookAtMatrix: (eye: vec3, target: vec3, up: vec3) => mat4;
export declare const getLocationFromMatrix: (matrix: mat4) => vec3;
/**
 * Importance: the rotation of UE around the x and y axes is the opposite of the normal left handed coordinate.
 */
export declare const convertEulerAngleFromGltfToUE: (rotator: vec3) => vec3;
export declare const convertEulerAngleFromUEToGltf: (rotator: vec3) => vec3;
export declare const convertEulerAngleFromRevitToUE: (rotator: vec3) => vec3;
export declare const convertEulerAngleFromUEToRevit: (rotator: vec3) => vec3;
export declare const getUELengthScale: () => number;
export declare const toDegree: (radian: number) => number;
export declare const fromDegree: (angle: number) => number;