com.vividsolutions.jts.operation.overlay.validate
Class OverlayResultValidator

java.lang.Object
  extended by com.vividsolutions.jts.operation.overlay.validate.OverlayResultValidator

public class OverlayResultValidator
extends java.lang.Object

Validates that the result of an overlay operation is geometrically correct, within a determined tolerance. Uses fuzzy point location to find points which are definitely in either the interior or exterior of the result geometry, and compares these results with the expected ones.

This algorithm is only useful where the inputs are polygonal. This is a heuristic test, and may return false positive results (I.e. it may fail to detect an invalid result.) It should never return a false negative result, however (I.e. it should never report a valid result as invalid.)

Version:
1.7
Author:
Martin Davis
See Also:
OverlayOp

Constructor Summary
OverlayResultValidator(Geometry a, Geometry b, Geometry result)
           
 
Method Summary
 Coordinate getInvalidLocation()
           
static boolean isValid(Geometry a, Geometry b, int overlayOp, Geometry result)
           
 boolean isValid(int overlayOp)
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

OverlayResultValidator

public OverlayResultValidator(Geometry a,
                              Geometry b,
                              Geometry result)
Method Detail

isValid

public static boolean isValid(Geometry a,
                              Geometry b,
                              int overlayOp,
                              Geometry result)

isValid

public boolean isValid(int overlayOp)

getInvalidLocation

public Coordinate getInvalidLocation()