com.codename1.geoviz

Class ToWGS84PathIterator

java.lang.Object

com.codename1.geoviz.ToWGS84PathIterator

All Implemented Interfaces:

com.codename1.ui.geom.PathIterator

public class ToWGS84PathIterator
extends java.lang.Object
implements com.codename1.ui.geom.PathIterator

A PathIterator that can be used to apply a given projection to the points of a shape. This iterator converts points from (x,y) coordinates in projection space to (lng,lat) pairs.

Field Summary

Fields inherited from interface com.codename1.ui.geom.PathIterator

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

Constructor Summary

Constructors

Constructor and Description
ToWGS84PathIterator(com.codename1.ui.geom.PathIterator source, com.codename1.maps.Projection projection)

Method Summary

Modifier and Type	Method and Description
int	currentSegment(double[] coords) Returns the coordinates of the next point(s), as well as the type of line segment.
int	currentSegment(float[] coords) Returns the coordinates of the next point(s), as well as the type of line segment.
int	getWindingRule() Returns the winding rule to determine which points are inside this path.
boolean	isDone() Tests if the iterator is exhausted.
void	next() Advance to the next segment in the iteration.

Methods inherited from class java.lang.Object

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

Constructor Detail

ToWGS84PathIterator

public ToWGS84PathIterator(com.codename1.ui.geom.PathIterator source,
                           com.codename1.maps.Projection projection)

Method Detail

getWindingRule

public int getWindingRule()

Description copied from interface: com.codename1.ui.geom.PathIterator

Returns the winding rule to determine which points are inside this path.

Specified by:

getWindingRule in interface com.codename1.ui.geom.PathIterator

Returns:

the winding rule. (PathIterator.WIND_EVEN_ODD or PathIterator.WIND_NON_ZERO).

isDone

public boolean isDone()

Description copied from interface: com.codename1.ui.geom.PathIterator

Tests if the iterator is exhausted. If this returns true, currentSegment and next may throw a RuntimeException (although this is not required).

Specified by:

isDone in interface com.codename1.ui.geom.PathIterator

Returns:

true if the iteration is complete

next

public void next()

Description copied from interface: com.codename1.ui.geom.PathIterator

Advance to the next segment in the iteration. It is not specified what this does if called when PathIterator.isDone() returns true.

Specified by:

next in interface com.codename1.ui.geom.PathIterator

currentSegment

public int currentSegment(float[] coords)

Description copied from interface: com.codename1.ui.geom.PathIterator

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 accommodate 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 PathIterator.SEG_MOVETO or PathIterator.SEG_LINETO, the first point in the array is modified; if the returned type is PathIterator.SEG_QUADTO, the first two points are modified; if the returned type is PathIterator.SEG_CUBICTO, all three points are modified; and if the returned type is PathIterator.SEG_CLOSE, the array is untouched.

Specified by:

currentSegment in interface com.codename1.ui.geom.PathIterator

Parameters:

coords - the array to place the point coordinates in

Returns:

the segment type. One of (PathIterator.SEG_MOVETO, PathIterator.SEG_LINETO, PathIterator.SEG_QUADTO, PathIterator.SEG_CUBICTO, PathIterator.SEG_CLOSE).

currentSegment

public int currentSegment(double[] coords)

Description copied from interface: com.codename1.ui.geom.PathIterator

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 accommodate 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 PathIterator.SEG_MOVETO or PathIterator.SEG_LINETO, the first point in the array is modified; if the returned type is PathIterator.SEG_QUADTO, the first two points are modified; if the returned type is PathIterator.SEG_CUBICTO, all three points are modified; and if the returned type is PathIterator.SEG_CLOSE, the array is untouched.

Specified by:

currentSegment in interface com.codename1.ui.geom.PathIterator

Parameters:

coords - the array to place the point coordinates in

Returns:

the segment type. One of (PathIterator.SEG_MOVETO, PathIterator.SEG_LINETO, PathIterator.SEG_QUADTO, PathIterator.SEG_CUBICTO, PathIterator.SEG_CLOSE).