Package com.macrofocus.high_d.parallelcoordinates.geometry.curve

Class NaturalCubicSpline

  • public class NaturalCubicSpline
extends Curve

    The natural-cubic-spline is constructed using piecewise third order polynomials which pass through all the control-points specified by the group-iterator. The curve can be open or closed. Figure 1 shows an open curve and figure 2 shows a closed curve.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void appendTo​(com.macrofocus.high_d.parallelcoordinates.geometry.curve.MultiPath mp)
      The requirements for this curve are the group-iterator must be in-range and have a group size of at least 2.
      protected void eval​(double[] p)
      The eval method evaluates a point on a curve given a parametric value "t".
      boolean getClosed()
      Returns the value of closed.
      int getSampleLimit()
      Returns a value of 1.
      void resetMemory()
      Resets the shared memory to the initial state.
      void setClosed​(boolean b)
      The closed attribute determines which tri-diagonal matrix to solve.

      • Methods inherited from class java.lang.Object

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

    • Method Detail

      • eval

        protected void eval​(double[] p)
        The eval method evaluates a point on a curve given a parametric value "t". The parametric value "t" is stored in the last index location of the specified double array. This value should not be changed. The dimension of the point to evaluate is p.length - 1. The result of the evaluation is placed in index locations 0 .. p.length - 2 (inclusive).

        The eval method should remain protected except for those curves that do no need any preparation to be done in the appendTo method.

      • setClosed

        public void setClosed​(boolean b)
        The closed attribute determines which tri-diagonal matrix to solve.
        See Also:
        getClosed()

      • getClosed

        public boolean getClosed()
        Returns the value of closed. The default value is false.
        See Also:
        setClosed(boolean)

      • getSampleLimit

        public int getSampleLimit()
        Returns a value of 1.

      • appendTo

        public void appendTo​(com.macrofocus.high_d.parallelcoordinates.geometry.curve.MultiPath mp)
        The requirements for this curve are the group-iterator must be in-range and have a group size of at least 2. If these requirements are not met then this method returns quietly.
        Specified by:
        appendTo in class Curve
        See Also:
        MultiPath, BinaryCurveApproximationAlgorithm

      • resetMemory

        public void resetMemory()
        Description copied from class: Curve
        Resets the shared memory to the initial state.
        Overrides:
        resetMemory in class Curve