Java Doc for PolygonIterator.java in  » GIS » GeoTools-2.4.1 » org » geotools » geometry » jts » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » GIS » GeoTools 2.4.1 » org.geotools.geometry.jts 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   org.geotools.geometry.jts.AbstractLiteIterator
      org.geotools.geometry.jts.PolygonIterator

PolygonIterator
final public class PolygonIterator extends AbstractLiteIterator (Code)
A path iterator for the LiteShape class, specialized to iterate over Polygon objects.
author:
   Andrea Aime
author:
   simone giannecchini
version:
   $Id: PolygonIterator.java 25086 2007-04-10 08:54:25Z aaime $



Constructor Summary
public  PolygonIterator(Polygon p, AffineTransform at)
     Creates a new PolygonIterator object.
public  PolygonIterator(Polygon p, AffineTransform at, boolean generalize)
     Creates a new PolygonIterator object.
public  PolygonIterator(Polygon p, AffineTransform at, boolean generalize, double maxDistance)
     Creates a new PolygonIterator object.

Method Summary
public  intcurrentSegment(double[] coords)
     Returns the coordinates and type of the current path segment in the iteration.
public  doublegetMaxDistance()
    
public  intgetWindingRule()
     Return the winding rule for determining the interior of the path.
public  booleanisDone()
     Tests if the iteration is complete.
public  voidnext()
     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.
public  voidsetMaxDistance(double distance)
    
protected  voidtransform(double[] src, int index, double[] dest, int destIndex, int numPoints)
    


Constructor Detail
PolygonIterator
public PolygonIterator(Polygon p, AffineTransform at)(Code)
Creates a new PolygonIterator object.
Parameters:
  p - The polygon
Parameters:
  at - The affine transform applied to coordinates during iteration



PolygonIterator
public PolygonIterator(Polygon p, AffineTransform at, boolean generalize)(Code)
Creates a new PolygonIterator object.
Parameters:
  p - The polygon
Parameters:
  at - The affine transform applied to coordinates during iteration
Parameters:
  generalize - if true apply simple distance based generalization



PolygonIterator
public PolygonIterator(Polygon p, AffineTransform at, boolean generalize, double maxDistance)(Code)
Creates a new PolygonIterator object.
Parameters:
  p - The polygon
Parameters:
  at - The affine transform applied to coordinates during iteration
Parameters:
  generalize - if true apply simple distance based generalization
Parameters:
  maxDistance - during iteration, a point will be skipped if it'sdistance from the previous is less than maxDistance




Method Detail
currentSegment
public int currentSegment(double[] coords)(Code)
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.
Parameters:
  coords - an array that holds the data returned from this method the path-segment type of the current path segment.
See Also:   PolygonIterator.SEG_MOVETO
See Also:   PolygonIterator.SEG_LINETO
See Also:   PolygonIterator.SEG_QUADTO
See Also:   PolygonIterator.SEG_CUBICTO
See Also:   PolygonIterator.SEG_CLOSE



getMaxDistance
public double getMaxDistance()(Code)
Returns the distance limit for point skipping during distance based generalization the maximum distance for distance based generalization



getWindingRule
public int getWindingRule()(Code)
Return the winding rule for determining the interior of the path. WIND_EVEN_ODD by default.



isDone
public boolean isDone()(Code)
Tests if the iteration is complete. true if all the segments have been read;false otherwise.



next
public void next()(Code)
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.



setMaxDistance
public void setMaxDistance(double distance)(Code)
Sets the distance limit for point skipping during distance based generalization
Parameters:
  distance - the maximum distance for point skipping



transform
protected void transform(double[] src, int index, double[] dest, int destIndex, int numPoints)(Code)



Fields inherited from org.geotools.geometry.jts.AbstractLiteIterator
protected double[] dcoords(Code)(Java Doc)

Methods inherited from org.geotools.geometry.jts.AbstractLiteIterator
public int currentSegment(float[] coords)(Code)(Java Doc)

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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