Application: gvSIG desktop » gvSIG tools: Vector editing

package org.gvsig.vectorediting.lib.prov.smoothline;

public class Cubic {

    double a, b, c, d; /* a + b*u + c*u^2 +d*u^3 */

    public Cubic(final double a,

                 final double b,

                 final double c,

                 final double d) {

       this.a = a;

       this.b = b;

       this.c = c;

       this.d = d;

    }

    /** evaluate cubic */

    public double eval(final double u) {

       return (((d * u) + c) * u + b) * u + a;

    }

 }