java.awt.geom
Interface PathIterator
java.lang.Object
|
+--java.awt.geom.PathIterator
public interface PathIterator
This interface provides a directed path over the boundary of a shape. The
path can contain 1st through 3rd order Bezier curves (lines, and quadratic
and cubic splines). A shape can have multiple disjoint paths via the
MOVETO directive, and can close a circular path back to the previos
MOVETO via the CLOSE directive.
Since:Authors:- Tom Tromey <tromey@cygnus.com>
- Eric Blake <ebb9@email.byu.edu>
See Also:
currentSegment
public int currentSegment(double[] coords)
Returns the coordinates of the next point(s), as well as the type of
line segment. The input array must be at least a double[6], to accomodate
up to three (x,y) point pairs (although if you know the iterator is
flat, you can probably get by with a double[2]). If the returned type is
SEG_MOVETO or SEG_LINETO, the first point in the array is modified; if
the returned type is SEG_QUADTO, the first two points are modified; if
the returned type is SEG_CUBICTO, all three points are modified; and if
the returned type is SEG_CLOSE, the array is untouched.
Parameters:
Returns:
Throws:
See Also:
currentSegment
public int currentSegment(float[] coords)
Returns the coordinates of the next point(s), as well as the type of
line segment. The input array must be at least a float[6], to accomodate
up to three (x,y) point pairs (although if you know the iterator is
flat, you can probably get by with a float[2]). If the returned type is
SEG_MOVETO or SEG_LINETO, the first point in the array is modified; if
the returned type is SEG_QUADTO, the first two points are modified; if
the returned type is SEG_CUBICTO, all three points are modified; and if
the returned type is SEG_CLOSE, the array is untouched.
Parameters:
Returns:
Throws:
See Also:
getWindingRule
public int getWindingRule()
Returns the winding rule to determine which points are inside this path.
Returns:
See Also:
isDone
public boolean isDone()
Tests if the iterator is exhausted. If this returns false, currentSegment
and next may throw a NoSuchElementException (although this is not
required).
Returns:
- true if the iteration is complete
next
public void next()
Advance to the next segment in the iteration. It is not specified what
this does if called when isDone() returns false.
Throws: