/**
 * Built-in weighting function names.
 */
export declare enum WeightingFunctionName {
    /**
     * A Box filter is an equal weighting function (all weights equal).
     * DO NOT LIMIT results by support or resize point sampling will work
     * as it requests points beyond its normal 0.0 support size.
     */
    BOX = "Box",
    /**
     * Cubic Filters using B,C determined values:
     * ```
     *     Mitchell-Netravali  B = 1/3 C = 1/3  "Balanced" cubic spline filter
     *     Catmull-Rom         B = 0   C = 1/2  Interpolatory and exact on linears
     *     Spline              B = 1   C = 0    B-Spline Gaussian approximation
     *     Hermite             B = 0   C = 0    B-Spline interpolator
     * ```
     *
     * See paper by Mitchell and Netravali, Reconstruction Filters in Computer Graphics Computer Graphics,
     * Volume 22, Number 4, August 1988
     * @link https://www.cs.utexas.edu/~fussell/courses/cs384g-fall2013/lectures/mitchell/Mitchell.pdf
     *
     * Coefficents are determined from B,C values:
     * ```
     *    P0 = (  6 - 2*B       )/6 = coeff[0]
     *    P1 =         0
     *    P2 = (-18 +12*B + 6*C )/6 = coeff[1]
     *    P3 = ( 12 - 9*B - 6*C )/6 = coeff[2]
     *    Q0 = (      8*B +24*C )/6 = coeff[3]
     *    Q1 = (    -12*B -48*C )/6 = coeff[4]
     *    Q2 = (      6*B +30*C )/6 = coeff[5]
     *    Q3 = (    - 1*B - 6*C )/6 = coeff[6]
     * ```
     * which are used to define the filter:
     * ```
     *    P0 + P1*x + P2*x^2 + P3*x^3      0 <= x < 1
     *    Q0 + Q1*x + Q2*x^2 + Q3*x^3      1 <= x < 2
     * ```
     * which ensures function is continuous in value and derivative (slope).
     */
    CUBIC_BC = "CubicBC"
}