Package com.itextpdf.awt.geom

Class FlatteningPathIterator

java.lang.Object

com.itextpdf.awt.geom.FlatteningPathIterator

All Implemented Interfaces:

PathIterator

public class FlatteningPathIterator
extends Object
implements PathIterator

Field Summary

Fields

Modifier and Type	Field	Description
(package private) double[]	buf	The points buffer
(package private) boolean	bufEmpty	The indicator of empty points buffer
private static final int	BUFFER_CAPACITY	The points buffer capacity
private static final int	BUFFER_LIMIT	The default curve subdivision limit
private static final int	BUFFER_SIZE	The default points buffer size
(package private) int	bufIndex	The inner cursor position in points buffer
(package private) int	bufLimit	The curve subdivision limit
(package private) int	bufSize	The current points buffer size
(package private) int	bufSubdiv	The current subdivision count
(package private) int	bufType	The type of current segment to be flat
(package private) double[]	coords	The tamporary buffer for getting points from PathIterator
(package private) double	flatness	The flatness of new path
(package private) double	flatness2	The square of flatness
(package private) PathIterator	p	The source PathIterator
(package private) double	px	The x coordinate of previous path segment
(package private) double	py	The y coordinate of previous path segment

Fields inherited from interface com.itextpdf.awt.geom.PathIterator

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

Constructor Summary

Constructors

Constructor	Description
FlatteningPathIterator(PathIterator path, double flatness)
FlatteningPathIterator(PathIterator path, double flatness, int limit)

Method Summary

Modifier and Type	Method	Description
int	currentSegment(double[] coords)
int	currentSegment(float[] coords)
(package private) void	evaluate()	Calculates flat path points for current segment of the source shape.
double	getFlatness()
int	getRecursionLimit()
int	getWindingRule()
boolean	isDone()
void	next()

Methods inherited from class java.lang.Object

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

Field Details

BUFFER_SIZE

private static final int BUFFER_SIZE

The default points buffer size

See Also:

• Constant Field Values

BUFFER_LIMIT

private static final int BUFFER_LIMIT

The default curve subdivision limit

See Also:

• Constant Field Values

BUFFER_CAPACITY

private static final int BUFFER_CAPACITY

The points buffer capacity

See Also:

• Constant Field Values

bufType

int bufType

The type of current segment to be flat

bufLimit

int bufLimit

The curve subdivision limit

bufSize

int bufSize

The current points buffer size

bufIndex

int bufIndex

The inner cursor position in points buffer

bufSubdiv

int bufSubdiv

The current subdivision count

buf

double[] buf

The points buffer

bufEmpty

boolean bufEmpty

The indicator of empty points buffer

p

PathIterator p

The source PathIterator

flatness

double flatness

The flatness of new path

flatness2

double flatness2

The square of flatness

px

double px

The x coordinate of previous path segment

py

double py

The y coordinate of previous path segment

coords

double[] coords

The tamporary buffer for getting points from PathIterator

Constructor Details

FlatteningPathIterator

public FlatteningPathIterator(PathIterator path,
 double flatness)

FlatteningPathIterator

public FlatteningPathIterator(PathIterator path,
 double flatness,
 int limit)

Method Details

getFlatness

public double getFlatness()

getRecursionLimit

public int getRecursionLimit()

getWindingRule

public int getWindingRule()

Specified by:

getWindingRule in interface PathIterator

isDone

public boolean isDone()

Specified by:

isDone in interface PathIterator

evaluate

void evaluate()

Calculates flat path points for current segment of the source shape. Line segment is flat by itself. Flatness of quad and cubic curves evaluated by getFlatnessSq() method. Curves subdivided until current flatness is bigger than user defined and subdivision limit isn't exhausted. Single source segment translated to series of buffer points. The less flatness the bigger serries. Every currentSegment() call extract one point from the buffer. When series completed evaluate() takes next source shape segment.

next

public void next()

Specified by:

next in interface PathIterator

currentSegment

public int currentSegment(float[] coords)

Specified by:

currentSegment in interface PathIterator

currentSegment

public int currentSegment(double[] coords)

Specified by:

currentSegment in interface PathIterator