com.graphbuilder.curve
Class ParametricCurve
java.lang.Object
com.graphbuilder.curve.Curve
com.graphbuilder.curve.ParametricCurve
- Direct Known Subclasses:
- BezierCurve, BSpline, CardinalSpline, CatmullRomSpline, CubicBSpline, LagrangeCurve, NaturalCubicSpline
- public abstract class ParametricCurve
- extends Curve
Curves that extend the ParametricCurve class are continuous and can use the
BinaryCurveApproximationAlgorithm class to generate a sequence of points that
approximate the curve. Note: Approximate means a finite set of points that
are on the curve, not close to the curve.
- See Also:
BinaryCurveApproximationAlgorithm
,
Curve
Method Summary |
protected abstract void |
eval(double[] p)
The eval method evaluates a point on a curve given a parametric value "t". |
abstract int |
getSampleLimit()
The sample limit specifies how many additional subdivisions are done to ensure that there
are no missed pieces of the curve. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
ParametricCurve
public ParametricCurve(ControlPath cp,
GroupIterator gp)
eval
protected abstract 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.
getSampleLimit
public abstract int getSampleLimit()
- The sample limit specifies how many additional subdivisions are done to ensure that there
are no missed pieces of the curve. The sample limit must be >= 0.