Package com.graphbuilder.curve

Class NaturalCubicSpline

java.lang.Object
com.graphbuilder.curve.Curve
com.graphbuilder.curve.ParametricCurve
com.graphbuilder.curve.NaturalCubicSpline
public class NaturalCubicSpline extends ParametricCurve

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.

  • Constructor Details

  • Method Details

    • eval

      protected void eval(double[] p)
      Description copied from class: ParametricCurve
      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.
      Specified by:
      eval in class ParametricCurve

    • setClosed

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

    • getClosed

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

    • getSampleLimit

      public int getSampleLimit()
      Returns a value of 1.
      Specified by:
      getSampleLimit in class ParametricCurve

    • appendTo

      public void appendTo(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 raises IllegalArgumentException
      Specified by:
      appendTo in class Curve
      See Also:

    • resetMemory

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