com.vividsolutions.jts.simplify
Class TopologyPreservingSimplifier
java.lang.Object
com.vividsolutions.jts.simplify.TopologyPreservingSimplifier
- public class TopologyPreservingSimplifier
- extends java.lang.Object
Simplifies a geometry, ensuring that
the result is a valid geometry having the
same dimension and number of components as the input.
The simplification uses a maximum distance difference algorithm
similar to the one used in the Douglas-Peucker algorithm.
In particular, if the input is an areal geometry
( Polygon
or MultiPolygon
)
- The result has the same number of shells and holes (rings) as the input,
in the same order
- The result rings touch at no more than the number of touching point in the input
(although they may touch at fewer points)
- Author:
- Martin Davis
- See Also:
DouglasPeuckerSimplifier
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
TopologyPreservingSimplifier
public TopologyPreservingSimplifier(Geometry inputGeom)
simplify
public static Geometry simplify(Geometry geom,
double distanceTolerance)
setDistanceTolerance
public void setDistanceTolerance(double distanceTolerance)
- Sets the distance tolerance for the simplification.
All vertices in the simplified geometry will be within this
distance of the original geometry.
The tolerance value must be non-negative. A tolerance value
of zero is effectively a no-op.
- Parameters:
distanceTolerance
- the approximation tolerance to use
getResultGeometry
public Geometry getResultGeometry()