export function computeGroundPerceivedAngle(surfaceNormal: any, direction: any, up: any): any;
export function computeCeilingPerceivedAngle(surfaceNormal: any, direction: any, up: any): any;
export function computeSurfacePerceivedAngle(surfaceNormal: any, direction: any, up: any, ground: any): number;
export namespace CharacterControllerUtils {
    export { computeGroundPerceivedAngle };
    export { computeCeilingPerceivedAngle };
    export { computeSurfacePerceivedAngle };
}