org.apache.batik.ext.awt.geom
Interface ExtendedPathIterator

All Known Implementing Classes:

ShapeExtender.EPIWrap

public interface ExtendedPathIterator

The ExtendedPathIterator class represents a geometric path constructed from straight lines, quadratic and cubic (Bézier) curves and elliptical arcs. This interface is identical to that of PathIterator except it can return SEG_ARCTO from currentSegment, also the array of values passed to currentSegment must be of length 7 or an error will be thrown. This does not extend PathIterator as it would break the interface contract for that class.

Field Summary

static int	SEG_ARCTO The segment type constant for an elliptical arc.
static int	SEG_CLOSE The segment type constant that specifies that the preceding subpath should be closed by appending a line segment back to the point corresponding to the most recent SEG_MOVETO.
static int	SEG_CUBICTO The segment type constant for the set of 3 points that specify a cubic parametric curve to be drawn from the most recently specified point.
static int	SEG_LINETO The segment type constant for a point that specifies the end point of a line to be drawn from the most recently specified point.
static int	SEG_MOVETO The segment type constant for a point that specifies the end point of a line to be drawn from the most recently specified point.
static int	SEG_QUADTO The segment type constant for the pair of points that specify a quadratic parametric curve to be drawn from the most recently specified point.
static int	WIND_EVEN_ODD The winding rule constant for specifying an even-odd rule for determining the interior of a path.
static int	WIND_NON_ZERO The winding rule constant for specifying a non-zero rule for determining the interior of a path.

Method Summary

int	currentSegment(double[] coords)
int	currentSegment(float[] coords)
int	getWindingRule()
boolean	isDone()
void	next()

Field Detail

SEG_CLOSE

public static final int SEG_CLOSE

The segment type constant that specifies that the preceding subpath should be closed by appending a line segment back to the point corresponding to the most recent SEG_MOVETO.

SEG_MOVETO

public static final int SEG_MOVETO

The segment type constant for a point that specifies the end point of a line to be drawn from the most recently specified point.

SEG_LINETO

public static final int SEG_LINETO

The segment type constant for a point that specifies the end point of a line to be drawn from the most recently specified point.

SEG_QUADTO

public static final int SEG_QUADTO

The segment type constant for the pair of points that specify a quadratic parametric curve to be drawn from the most recently specified point. The curve is interpolated by solving the parametric control equation in the range (t=[0..1]) using the most recently specified (current) point (CP), the first control point (P1), and the final interpolated control point (P2).

SEG_CUBICTO

public static final int SEG_CUBICTO

The segment type constant for the set of 3 points that specify a cubic parametric curve to be drawn from the most recently specified point. The curve is interpolated by solving the parametric control equation in the range (t=[0..1]) using the most recently specified (current) point (CP), the first control point (P1), the second control point (P2), and the final interpolated control point (P3).

SEG_ARCTO

public static final int SEG_ARCTO

The segment type constant for an elliptical arc. This consists of Seven values [rx, ry, angle, largeArcFlag, sweepFlag, x, y]. rx, ry are the radious of the ellipse. angle is angle of the x axis of the ellipse. largeArcFlag is zero if the smaller of the two arcs are to be used. sweepFlag is zero if the 'left' branch is taken one otherwise. x and y are the destination for the ellipse.

WIND_EVEN_ODD

public static final int WIND_EVEN_ODD

The winding rule constant for specifying an even-odd rule for determining the interior of a path. The even-odd rule specifies that a point lies inside the path if a ray drawn in any direction from that point to infinity is crossed by path segments an odd number of times.

WIND_NON_ZERO

public static final int WIND_NON_ZERO

The winding rule constant for specifying a non-zero rule for determining the interior of a path. The non-zero rule specifies that a point lies inside the path if a ray drawn in any direction from that point to infinity is crossed by path segments a different number of times in the counter-clockwise direction than the clockwise direction.

Method Detail

currentSegment

public int currentSegment(double[] coords)

currentSegment

public int currentSegment(float[] coords)

getWindingRule

public int getWindingRule()

isDone

public boolean isDone()

next

public void next()