org.opengis.geometry.coordinate

Interface SplineCurve

All Superinterfaces:

CurveSegment, GenericCurve

All Known Subinterfaces:

Bezier, BSplineCurve, CubicSpline, PolynomialSpline

@UML(identifier="GM_SplineCurve",
     specification=ISO_19107)
public interface SplineCurve
extends CurveSegment

Root for subtypes of curve segment using some version of spline, either polynomial or rational functions.

Since:

GeoAPI 2.0

Author:

Martin Desruisseaux (IRD)

Method Summary

Modifier and Type	Method and Description
PointArray	getControlPoints() An array of points that are used in the interpolation in this spline curve.
int	getDegree() The degree of the polynomial used for interpolation in a polynomial spline.
List<Knot>	getKnots() The sequence of distinct knots used to define the spline basis functions.

Methods inherited from interface CurveSegment

getBoundary, getCurve, getInterpolation, getNumDerivativesAtEnd, getNumDerivativesAtStart, getNumDerivativesInterior, getSamplePoints, reverse

Methods inherited from interface GenericCurve

asLineString, forConstructiveParam, forParam, getEndConstructiveParam, getEndParam, getEndPoint, getParamForPoint, getStartConstructiveParam, getStartParam, getStartPoint, getTangent, length, length

Method Detail

getKnots

@UML(identifier="knot",
     obligation=MANDATORY,
     specification=ISO_19107)
List<Knot> getKnots()

The sequence of distinct knots used to define the spline basis functions. Recall that the knot data type holds information on knot multiplicity.

getDegree

@UML(identifier="degree",
     obligation=MANDATORY,
     specification=ISO_19107)
int getDegree()

The degree of the polynomial used for interpolation in a polynomial spline.

getControlPoints

@UML(identifier="controlPoints",
     obligation=MANDATORY,
     specification=ISO_19107)
PointArray getControlPoints()

An array of points that are used in the interpolation in this spline curve.