Package com.mxgraph.util

Class mxSpline1D

  • public class mxSpline1D
extends java.lang.Object
    One dimension of a spline curve

    • Field Summary

      Fields 
      Modifier and Type Field Description
      protected double[] a  
      protected double[] b  
      protected double[] c  
      protected double[] d  
      protected double[] len  
      protected double[] pos1D  

    • Constructor Summary

      Constructors 
      Constructor Description
      mxSpline1D​(double[] controlPointProportions, double[] positions1D)
      Creates a new Spline.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      double getDx​(double x)
      Returns the first derivation at x.
      double getFastValue​(double x)
      Returns an interpolated value.
      double getValue​(double x)
      Returns an interpolated value.
      void setValues​(double[] controlPointProportions, double[] positions1D)
      Set values for this Spline.
      void solve​(double[][] A, double[] b)
      Solves Ax=b and stores the solution in b.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Field Detail

      • len

        protected double[] len

      • pos1D

        protected double[] pos1D

      • a

        protected double[] a

      • b

        protected double[] b

      • c

        protected double[] c

      • d

        protected double[] d

    • Constructor Detail

      • mxSpline1D

        public mxSpline1D​(double[] controlPointProportions,
                  double[] positions1D)
        Creates a new Spline.
        Parameters:
        controlPointProportions - the proportion along the curve, from 0->1 that each control point lies on
        positions1D - the co-ordinate position in the current dimension that each control point lies on

    • Method Detail

      • setValues

        public void setValues​(double[] controlPointProportions,
                      double[] positions1D)
        Set values for this Spline.
        Parameters:
        controlPointProportions - the proportion along the curve, from 0->1 that each control point lies on
        positions1D - the co-ordinate position in the current dimension that each control point lies on

      • getValue

        public double getValue​(double x)
        Returns an interpolated value.
        Parameters:
        x -
        Returns:
        the interpolated value

      • getFastValue

        public double getFastValue​(double x)
        Returns an interpolated value. To be used when a long sequence of values are required in order, but ensure checkValues() is called beforehand to ensure the boundary checks from getValue() are made
        Parameters:
        x -
        Returns:
        the interpolated value

      • getDx

        public double getDx​(double x)
        Returns the first derivation at x.
        Parameters:
        x -
        Returns:
        the first derivation at x

      • solve

        public void solve​(double[][] A,
                  double[] b)
        Solves Ax=b and stores the solution in b.