Package org.locationtech.jts.dissolve
Class LineDissolver
java.lang.Object
org.locationtech.jts.dissolve.LineDissolver
Dissolves the linear components
from a collection of
Geometry
s
into a set of maximal-length LineString
s
in which every unique segment appears once only.
The output linestrings run between node vertices
of the input, which are vertices which have
either degree 1, or degree 3 or greater.
Use cases for dissolving linear components include generalization (in particular, simplifying polygonal coverages), and visualization (in particular, avoiding symbology conflicts when depicting shared polygon boundaries).
This class does not node the input lines. If there are line segments crossing in the input, they will still cross in the output.
- Author:
- Martin Davis
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionvoid
add
(Collection geometries) Adds a collection of Geometries to be processed.void
Adds aGeometry
to be dissolved.static Geometry
Dissolves the linear components in a geometry.Gets the dissolved result as a MultiLineString.
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Constructor Details
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LineDissolver
public LineDissolver()
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Method Details
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dissolve
Dissolves the linear components in a geometry.- Parameters:
g
- the geometry to dissolve- Returns:
- the dissolved lines
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add
Adds aGeometry
to be dissolved. Any number of geometries may be added by calling this method multiple times. Any type of Geometry may be added. The constituent linework will be extracted to be dissolved.- Parameters:
geometry
- geometry to be line-merged
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add
Adds a collection of Geometries to be processed. May be called multiple times. Any dimension of Geometry may be added; the constituent linework will be extracted.- Parameters:
geometries
- the geometries to be line-merged
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getResult
Gets the dissolved result as a MultiLineString.- Returns:
- the dissolved lines
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