math.geom2d.domain

Class Boundary2DUtils

java.lang.Object

math.geom2d.domain.Boundary2DUtils

public abstract class Boundary2DUtils
extends Object

Collects some useful methods for clipping curves.

Author:

dlegland

Constructor Summary

Constructors

Constructor and Description
Boundary2DUtils()

Method Summary

Methods

Modifier and Type	Method and Description
static BoundarySet2D<ContinuousBoundary2D>	clipBoundary(Boundary2D boundary, Box2D box) Clips a boundary and closes the result curve.
static CurveSet2D<ContinuousOrientedCurve2D>	clipContinuousOrientedCurve(ContinuousOrientedCurve2D curve, Box2D box) Clip a curve, and return a CurveSet2D.
static int	findNextCurveIndex(double[] positions, double pos)
static Polyline2D	getBoundaryPortion(Box2D box, Point2D p0, Point2D p1) Extracts a portion of the boundary of a bounded box.

Methods inherited from class java.lang.Object

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

Constructor Detail

Boundary2DUtils

public Boundary2DUtils()

Method Detail

clipContinuousOrientedCurve

public static final CurveSet2D<ContinuousOrientedCurve2D> clipContinuousOrientedCurve(ContinuousOrientedCurve2D curve,
                                                                Box2D box)

Clip a curve, and return a CurveSet2D. If the curve is totally outside the box, return a CurveSet2D with 0 curves inside. If the curve is totally inside the box, return a CurveSet2D with only one curve, which is the original curve.

clipBoundary

public static final BoundarySet2D<ContinuousBoundary2D> clipBoundary(Boundary2D boundary,
                                               Box2D box)

Clips a boundary and closes the result curve. Return an instance of BoundarySet2D.

findNextCurveIndex

public static final int findNextCurveIndex(double[] positions,
                     double pos)

getBoundaryPortion

public static final Polyline2D getBoundaryPortion(Box2D box,
                            Point2D p0,
                            Point2D p1)

Extracts a portion of the boundary of a bounded box.

Parameters:

box - the box from which one extract a portion of boundary

p0 - the first point of the portion

p1 - the last point of the portion

Returns:

the portion of the bounding box boundary as a Polyline2D