org.deegree.geometry.standard.curvesegments
Class DefaultBSpline

java.lang.Object
  org.deegree.geometry.standard.curvesegments.DefaultBSpline

All Implemented Interfaces:

BSpline, CurveSegment

public class DefaultBSpline
extends Object
implements BSpline

Default implementation of BSpline segments.

Version:

$Revision:$, $Date:$

Author:

Markus Schneider , last edited by: $Author:$

Nested Class Summary

Nested classes/interfaces inherited from interface org.deegree.geometry.primitive.segments.CurveSegment

CurveSegment.CurveSegmentType

Constructor Summary

DefaultBSpline(Points controlPoints, int polynomialDegree, List<Knot> knots, boolean isPolynomial)
Creates a new DefaultBSpline instance from the given parameters.

Method Summary

Points	getControlPoints() Returns the control points of the segment.
int	getCoordinateDimension() Returns the coordinate dimension, i.e. the dimension of the space that the curve is embedded in.
Point	getEndPoint() Returns the end point of the segment.
List<Knot>	getKnots() Returns the knots that define the spline basis functions.
int	getPolynomialDegree() Returns the degree of the polynomial used for interpolation in this spline.
CurveSegment.CurveSegmentType	getSegmentType() Returns the type of curve segment.
Point	getStartPoint() Returns the start point of the segment.
boolean	isPolynomial() Returns whether the interpolation is polynomial or rational.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultBSpline

public DefaultBSpline(Points controlPoints,
                      int polynomialDegree,
                      List<Knot> knots,
                      boolean isPolynomial)

Creates a new DefaultBSpline instance from the given parameters.

Parameters:

controlPoints -

polynomialDegree -

knots -

isPolynomial -

Method Detail

getCoordinateDimension

public int getCoordinateDimension()

Description copied from interface: CurveSegment

Returns the coordinate dimension, i.e. the dimension of the space that the curve is embedded in.

Specified by:

getCoordinateDimension in interface CurveSegment

Returns:

the coordinate dimension

getControlPoints

public Points getControlPoints()

Description copied from interface: BSpline

Returns the control points of the segment.

Specified by:

getControlPoints in interface BSpline

Returns:

the control points of the segment

getPolynomialDegree

public int getPolynomialDegree()

Description copied from interface: BSpline

Returns the degree of the polynomial used for interpolation in this spline.

Specified by:

getPolynomialDegree in interface BSpline

Returns:

the degree of the polynomial

getKnots

public List<Knot> getKnots()

Description copied from interface: BSpline

Returns the knots that define the spline basis functions.

Specified by:

getKnots in interface BSpline

Returns:

list of distinctive knots

getStartPoint

public Point getStartPoint()

Description copied from interface: CurveSegment

Returns the start point of the segment.

Specified by:

getStartPoint in interface CurveSegment

Returns:

the start point of the segment

getEndPoint

public Point getEndPoint()

Description copied from interface: CurveSegment

Returns the end point of the segment.

Specified by:

getEndPoint in interface CurveSegment

Returns:

the end point of the segment

getSegmentType

public CurveSegment.CurveSegmentType getSegmentType()

Description copied from interface: CurveSegment

Returns the type of curve segment.

Specified by:

getSegmentType in interface CurveSegment

Returns:

the type of curve segment

isPolynomial

public boolean isPolynomial()

Description copied from interface: BSpline

Returns whether the interpolation is polynomial or rational.

Specified by:

isPolynomial in interface BSpline

Returns:

true, if the interpolation is polynomial, false if it's rational