public class IsSimpleOp extends Object
Geometry is simple.
In general, the SFS specification of simplicity
follows the rule:
Simplicity is defined for each Geometry type as follows:
isSimple trivially returns true.
(Note: this means that isSimple cannot be used to test
for (invalid) self-intersections in Polygons.
In order to check if a Polygonal geometry has self-intersections,
use Geometry.isValid()).
Geometry.touches(Geometry)
predicate.
Lineal geometries the evaluation of simplicity
can be customized by supplying a BoundaryNodeRule
to define how boundary points are determined.
The default is the SFS-standard BoundaryNodeRule.MOD2_BOUNDARY_RULE.
Note that under the Mod-2 rule, closed LineStrings (rings)
will never satisfy the touches predicate at their endpoints, since these are
interior points, not boundary points.
If it is required to test whether a set of LineStrings touch
only at their endpoints, use IsSimpleOp with BoundaryNodeRule.ENDPOINT_BOUNDARY_RULE.
For example, this can be used to validate that a set of lines form a topologically valid
linear network.BoundaryNodeRule| Constructor and Description |
|---|
IsSimpleOp()
Deprecated.
use IsSimpleOp(Geometry)
|
IsSimpleOp(Geometry geom)
Deprecated.
Creates a simplicity checker using the default SFS Mod-2 Boundary Node Rule
|
IsSimpleOp(Geometry geom,
BoundaryNodeRule boundaryNodeRule)
Deprecated.
Creates a simplicity checker using a given
BoundaryNodeRule |
| Modifier and Type | Method and Description |
|---|---|
Coordinate |
getNonSimpleLocation()
Deprecated.
Gets a coordinate for the location where the geometry
fails to be simple.
|
boolean |
isSimple()
Deprecated.
Tests whether the geometry is simple.
|
boolean |
isSimple(LineString geom)
Deprecated.
use isSimple()
|
boolean |
isSimple(MultiLineString geom)
Deprecated.
use isSimple()
|
boolean |
isSimple(MultiPoint mp)
Deprecated.
use isSimple()
|
public IsSimpleOp()
public IsSimpleOp(Geometry geom)
geom - the geometry to testpublic IsSimpleOp(Geometry geom, BoundaryNodeRule boundaryNodeRule)
BoundaryNodeRulegeom - the geometry to testboundaryNodeRule - the rule to use.public boolean isSimple()
public Coordinate getNonSimpleLocation()
isSimple() must be called before this method is called.public boolean isSimple(LineString geom)
LineString is simple.geom - the lineal geometry to testpublic boolean isSimple(MultiLineString geom)
MultiLineString geometry is simple.geom - the lineal geometry to testpublic boolean isSimple(MultiPoint mp)
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