math.geom2d.curve
Class PolyCurve2D<T extends ContinuousCurve2D>

java.lang.Object
  math.geom2d.curve.CurveSet2D<T>
      math.geom2d.curve.PolyCurve2D<T>

All Implemented Interfaces:

java.awt.Shape, java.lang.Iterable<T>, ContinuousCurve2D, Curve2D, Shape2D

Direct Known Subclasses:

PolyBezierCurve2D, PolyOrientedCurve2D

public class PolyCurve2D<T extends ContinuousCurve2D>
extends CurveSet2D<T>
implements ContinuousCurve2D

A PolyCurve2D is a set of piecewise smooth curve arcs, such that the end of a curve is the beginning of the next curve, and such that they do not intersect nor self-intersect.

Author:

dlegland

Field Summary

protected boolean

closed

Fields inherited from class math.geom2d.curve.CurveSet2D

curves

Fields inherited from interface math.geom2d.curve.ContinuousCurve2D

CIRCLE, CLOSED_EDGE, LOOP, OPEN_EDGE

Fields inherited from interface math.geom2d.Shape2D

ACCURACY, defaultClipWindow, EMPTY_SET

Constructor Summary

PolyCurve2D()

PolyCurve2D(java.util.Collection<? extends T> curves)

PolyCurve2D(T[] curves)

Method Summary

java.awt.geom.GeneralPath	appendPath(java.awt.geom.GeneralPath path) Append the path of the curve to the given path.
CurveSet2D<? extends ContinuousCurve2D>	clip(Box2D box) Clip the PolyCurve2D by a box.
Polyline2D	getAsPolyline(int n) Returns an approximation of the curve as a polyline with n line segments.
protected java.awt.geom.GeneralPath	getGeneralPath()
java.awt.geom.PathIterator	getPathIterator(java.awt.geom.AffineTransform trans)
java.awt.geom.PathIterator	getPathIterator(java.awt.geom.AffineTransform trans, double flatness)
PolyCurve2D<? extends ContinuousCurve2D>	getReverseCurve() Returns the curve with same trace on the plane with parametrization in reverse order.
java.util.Collection<? extends SmoothCurve2D>	getSmoothPieces() Returns a collection containing only instances of SmoothCurve2D.
PolyCurve2D<? extends ContinuousCurve2D>	getSubCurve(double t0, double t1) Return an instance of PolyCurve2D.
boolean	isClosed() Return true if the curve makes a loop, that is come back to starting point after covering the path.
void	setClosed(boolean b)
PolyCurve2D<? extends ContinuousCurve2D>	transform(AffineTransform2D trans) Transform each curve, and build a new CurveSet2D with the set of transformed curves.

Methods inherited from class math.geom2d.curve.CurveSet2D

addCurve, clearCurves, contains, contains, contains, contains, equals, fromUnitSegment, getBoundingBox, getBounds, getBounds2D, getContinuousCurves, getCurveNumber, getCurves, getDistance, getDistance, getFirstCurve, getFirstPoint, getIntersections, getLastCurve, getLastPoint, getPoint, getPoint, getPosition, getT0, getT1, intersects, intersects, isBounded, isEmpty, iterator, project, removeCurve, toUnitSegment

Methods inherited from class java.lang.Object

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

Methods inherited from interface math.geom2d.curve.Curve2D

getContinuousCurves, getFirstPoint, getIntersections, getLastPoint, getPoint, getPoint, getPosition, getT0, getT1, project

Methods inherited from interface math.geom2d.Shape2D

getBoundingBox, getDistance, getDistance, isBounded

Methods inherited from interface java.awt.Shape

contains, contains, contains, contains, getBounds, getBounds2D, intersects, intersects

Field Detail

closed

protected boolean closed

Constructor Detail

PolyCurve2D

public PolyCurve2D()

PolyCurve2D

public PolyCurve2D(T[] curves)

PolyCurve2D

public PolyCurve2D(java.util.Collection<? extends T> curves)

Method Detail

setClosed

public void setClosed(boolean b)

getAsPolyline

public Polyline2D getAsPolyline(int n)

Description copied from interface: ContinuousCurve2D

Returns an approximation of the curve as a polyline with n line segments. If the curve is closed, the method should return an instance of ClosedPolyline2D.

Specified by:

getAsPolyline in interface ContinuousCurve2D

Parameters:

n - the number of line segments

Returns:

a closed polyline with n line segments.

isClosed

public boolean isClosed()

Description copied from interface: ContinuousCurve2D

Return true if the curve makes a loop, that is come back to starting point after covering the path.

Specified by:

isClosed in interface ContinuousCurve2D

getSmoothPieces

public java.util.Collection<? extends SmoothCurve2D> getSmoothPieces()

Returns a collection containing only instances of SmoothCurve2D.

Specified by:

getSmoothPieces in interface ContinuousCurve2D

Returns:

a collection of SmoothCurve2D

getReverseCurve

public PolyCurve2D<? extends ContinuousCurve2D> getReverseCurve()

Description copied from interface: Curve2D

Returns the curve with same trace on the plane with parametrization in reverse order.

Specified by:

getReverseCurve in interface ContinuousCurve2D

Specified by:

getReverseCurve in interface Curve2D

Overrides:

getReverseCurve in class CurveSet2D<T extends ContinuousCurve2D>

getSubCurve

public PolyCurve2D<? extends ContinuousCurve2D> getSubCurve(double t0,
                                                            double t1)

Return an instance of PolyCurve2D. If t0>t1 and curve is not closed, return a PolyCurve2D without curves inside.

Specified by:

getSubCurve in interface ContinuousCurve2D

Specified by:

getSubCurve in interface Curve2D

Overrides:

getSubCurve in class CurveSet2D<T extends ContinuousCurve2D>

Parameters:

t0 - position of the start of the sub-curve

t1 - position of the end of the sub-curve

Returns:

the portion of original curve comprised between t0 and t1.

clip

public CurveSet2D<? extends ContinuousCurve2D> clip(Box2D box)

Clip the PolyCurve2D by a box. The result is an instance of CurveSet2D, which contains only instances of ContinuousCurve2D. If the PolyCurve2D is not clipped, the result is an instance of CurveSet2D which contains 0 curves.

Specified by:

clip in interface ContinuousCurve2D

Specified by:

clip in interface Curve2D

Specified by:

clip in interface Shape2D

Overrides:

clip in class CurveSet2D<T extends ContinuousCurve2D>

Parameters:

box - the clipping box

Returns:

the clipped shape

transform

public PolyCurve2D<? extends ContinuousCurve2D> transform(AffineTransform2D trans)

Description copied from class: CurveSet2D

Transform each curve, and build a new CurveSet2D with the set of transformed curves.

Specified by:

transform in interface ContinuousCurve2D

Specified by:

transform in interface Curve2D

Specified by:

transform in interface Shape2D

Overrides:

transform in class CurveSet2D<T extends ContinuousCurve2D>

Parameters:

trans - an affine transform

Returns:

the transformed shape

appendPath

public java.awt.geom.GeneralPath appendPath(java.awt.geom.GeneralPath path)

Description copied from interface: ContinuousCurve2D

Append the path of the curve to the given path.

Specified by:

appendPath in interface ContinuousCurve2D

Parameters:

path - a path to modify

Returns:

the modified path

getGeneralPath

protected java.awt.geom.GeneralPath getGeneralPath()

Overrides:

getGeneralPath in class CurveSet2D<T extends ContinuousCurve2D>

getPathIterator

public java.awt.geom.PathIterator getPathIterator(java.awt.geom.AffineTransform trans)

Specified by:

getPathIterator in interface java.awt.Shape

Overrides:

getPathIterator in class CurveSet2D<T extends ContinuousCurve2D>

getPathIterator

public java.awt.geom.PathIterator getPathIterator(java.awt.geom.AffineTransform trans,
                                                  double flatness)

Specified by:

getPathIterator in interface java.awt.Shape

Overrides:

getPathIterator in class CurveSet2D<T extends ContinuousCurve2D>