org.jhotdraw.geom
Class BezierPathIterator

java.lang.Object
  org.jhotdraw.geom.BezierPathIterator

All Implemented Interfaces:

java.awt.geom.PathIterator

public class BezierPathIterator
extends java.lang.Object
implements java.awt.geom.PathIterator

This class represents the iterator for a BezierPath. It can be used to retrieve all of the elements in a BezierPath. The BezierPath.getPathIterator(java.awt.geom.AffineTransform) method is used to create a BezierPathIterator for a particular BezierPath. The iterator can be used to iterator the path only once. Subsequent iterations require a new iterator.

Version:

1.0 7. Mai 2007 Created.

Author:

Werner Randelshofer

Field Summary

Fields inherited from interface java.awt.geom.PathIterator

SEG_CLOSE, SEG_CUBICTO, SEG_LINETO, SEG_MOVETO, SEG_QUADTO, WIND_EVEN_ODD, WIND_NON_ZERO

Constructor Summary

BezierPathIterator(BezierPath path)
Constructs an iterator given a BezierPath.

BezierPathIterator(BezierPath path, java.awt.geom.AffineTransform at)
Constructs an iterator given a BezierPath and an optional AffineTransform.

Method Summary

int	currentSegment(double[] coords) Returns the coordinates and type of the current path segment in the iteration.
int	currentSegment(float[] coords) Returns the coordinates and type of the current path segment in the iteration.
int	getWindingRule() Return the winding rule for determining the interior of the path.
boolean	isDone() Tests if there are more points to read.
void	next() Moves the iterator to the next segment of the path forwards along the primary direction of traversal as long as there are more points in that direction.

Methods inherited from class java.lang.Object

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

Constructor Detail

BezierPathIterator

public BezierPathIterator(BezierPath path)

Constructs an iterator given a BezierPath.

See Also:

BezierPath.getPathIterator(java.awt.geom.AffineTransform)

BezierPathIterator

public BezierPathIterator(BezierPath path,
                          java.awt.geom.AffineTransform at)

Constructs an iterator given a BezierPath and an optional AffineTransform.

See Also:

BezierPath.getPathIterator(java.awt.geom.AffineTransform)

Method Detail

getWindingRule

public int getWindingRule()

Return the winding rule for determining the interior of the path.

Specified by:

getWindingRule in interface java.awt.geom.PathIterator

See Also:

PathIterator.WIND_EVEN_ODD, PathIterator.WIND_NON_ZERO

isDone

public boolean isDone()

Tests if there are more points to read.

Specified by:

isDone in interface java.awt.geom.PathIterator

Returns:

true if there are more points to read

next

public void next()

Moves the iterator to the next segment of the path forwards along the primary direction of traversal as long as there are more points in that direction.

Specified by:

next in interface java.awt.geom.PathIterator

currentSegment

public int currentSegment(float[] coords)

Returns the coordinates and type of the current path segment in the iteration. The return value is the path segment type: SEG_MOVETO, SEG_LINETO, SEG_QUADTO, SEG_CUBICTO, or SEG_CLOSE. A float array of length 6 must be passed in and may be used to store the coordinates of the point(s). Each point is stored as a pair of float x,y coordinates. SEG_MOVETO and SEG_LINETO types will return one point, SEG_QUADTO will return two points, SEG_CUBICTO will return 3 points and SEG_CLOSE will not return any points.

Specified by:

currentSegment in interface java.awt.geom.PathIterator

See Also:

PathIterator.SEG_MOVETO, PathIterator.SEG_LINETO, PathIterator.SEG_QUADTO, PathIterator.SEG_CUBICTO, PathIterator.SEG_CLOSE

currentSegment

public int currentSegment(double[] coords)

Returns the coordinates and type of the current path segment in the iteration. The return value is the path segment type: SEG_MOVETO, SEG_LINETO, SEG_QUADTO, SEG_CUBICTO, or SEG_CLOSE. A double array of length 6 must be passed in and may be used to store the coordinates of the point(s). Each point is stored as a pair of double x,y coordinates. SEG_MOVETO and SEG_LINETO types will return one point, SEG_QUADTO will return two points, SEG_CUBICTO will return 3 points and SEG_CLOSE will not return any points.

Specified by:

currentSegment in interface java.awt.geom.PathIterator

See Also:

PathIterator.SEG_MOVETO, PathIterator.SEG_LINETO, PathIterator.SEG_QUADTO, PathIterator.SEG_CUBICTO, PathIterator.SEG_CLOSE