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import {
Vector3,
Vector4
} from '../../../src/Three';
export namespace NURBSUtils {
export function findSpan( p: number, u: number, U: number[] ): number;
export function calcBasisFunctions( span: number, u: number, p: number, U: number[] ): number[];
export function calcBSplinePoint( p: number, U: number[], P: Vector4[], u: number ): Vector4;
export function calcBasisFunctionDerivatives( span: number, u: number, p: number, n: number, U: number[] ): number[][];
export function calcBSplineDerivatives( p: number, U: number[], P: Vector4[], u: number, nd: number ): Vector4[];
export function calcKoverI( k: number, i: number ): number;
export function calcRationalCurveDerivatives( Pders: Vector4[] ): Vector3[];
export function calcNURBSDerivatives( p: number, U: number[], P: Vector4[], u: number, nd: number ): Vector3[];
export function calcSurfacePoint( p: number, q: number, U: number[], V: number[], P: Vector4[], u: number, v: number, target: Vector3 ): Vector3;
}
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