Package org.evoludo.geom

Class Path2D.Iterator

Object

Iterator

All Implemented Interfaces:

PathIterator

Enclosing class:

Path2D

public static class Path2D.Iterator
extends Object
implements PathIterator

Adapted from java.awt.geom.PathIterator, merged with Path2D Iterator and CopyIterator. Constants moved to Path2D and made more GWT friendly.

Field Summary

Fields

Modifier and Type	Field	Description
(package private) static final int[]	curvecoords
(package private) double[]	doubleCoords
(package private) Path2D	path
(package private) int	pointIdx
(package private) int	typeIdx

Fields inherited from interface PathIterator

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

Constructor Summary

Constructors

Constructor	Description
Iterator(Path2D path)	Constructs a new path iterator object from an arbitrary Path2D object.

Method Summary

Modifier and Type	Method	Description
int	currentSegment(double[] coords)	Returns the coordinates and type of the current path segment in the iteration.
int	getWindingRule()	Returns the winding rule for determining the interior of the path.
boolean	isDone()	Tests if the iteration is complete.
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 Object

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

Field Details

typeIdx

int typeIdx

pointIdx

int pointIdx

path

Path2D path

curvecoords

static final int[] curvecoords

doubleCoords

double[] doubleCoords

Constructor Details

Iterator

Iterator(Path2D path)

Constructs a new path iterator object from an arbitrary Path2D object.

Parameters:

path - the path to iterate over its segments

Method Details

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 can 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 returns one point, SEG_QUADTO returns two points, SEG_CUBICTO returns 3 points and SEG_CLOSE does not return any points.

Specified by:

currentSegment in interface PathIterator

Parameters:

coords - an array that holds the data returned from this method

Returns:

the path-segment type of the current path segment.

See Also:

• Path2D.SEG_MOVETO
• Path2D.SEG_LINETO
• Path2D.SEG_QUADTO
• Path2D.SEG_CUBICTO
• Path2D.SEG_CLOSE

getWindingRule

public int getWindingRule()

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

Specified by:

getWindingRule in interface PathIterator

Returns:

the winding rule.

See Also:

• Path2D.WIND_EVEN_ODD
• Path2D.WIND_NON_ZERO

isDone

public boolean isDone()

Tests if the iteration is complete.

Specified by:

isDone in interface PathIterator

Returns:

true if all the segments have been read; false otherwise.

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 PathIterator