Class IsValidOp
- java.lang.Object
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- org.locationtech.jts.operation.valid.IsValidOp
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public class IsValidOp extends java.lang.Object
Implements the algorithms required to compute theisValid()
method forGeometry
s. See the documentation for the various geometry types for a specification of validity.- Version:
- 1.7
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description static Coordinate
findPtNotNode(Coordinate[] testCoords, LinearRing searchRing, GeometryGraph graph)
Find a point from the list of testCoords that is NOT a node in the edge for the list of searchCoordsTopologyValidationError
getValidationError()
Computes the validity of the geometry, and if not valid returns the validation error for the geometry, or null if the geometry is valid.boolean
isValid()
Computes the validity of the geometry, and returns true if it is valid.static boolean
isValid(Coordinate coord)
Checks whether a coordinate is valid for processing.static boolean
isValid(Geometry geom)
Tests whether aGeometry
is valid.void
setSelfTouchingRingFormingHoleValid(boolean isValid)
Sets whether polygons using Self-Touching Rings to form holes are reported as valid.
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Constructor Detail
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IsValidOp
public IsValidOp(Geometry parentGeometry)
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Method Detail
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isValid
public static boolean isValid(Geometry geom)
Tests whether aGeometry
is valid.- Parameters:
geom
- the Geometry to test- Returns:
- true if the geometry is valid
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isValid
public static boolean isValid(Coordinate coord)
Checks whether a coordinate is valid for processing. Coordinates are valid iff their x and y ordinates are in the range of the floating point representation.- Parameters:
coord
- the coordinate to validate- Returns:
true
if the coordinate is valid
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findPtNotNode
public static Coordinate findPtNotNode(Coordinate[] testCoords, LinearRing searchRing, GeometryGraph graph)
Find a point from the list of testCoords that is NOT a node in the edge for the list of searchCoords- Returns:
- the point found, or
null
if none found
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setSelfTouchingRingFormingHoleValid
public void setSelfTouchingRingFormingHoleValid(boolean isValid)
Sets whether polygons using Self-Touching Rings to form holes are reported as valid. If this flag is set, the following Self-Touching conditions are treated as being valid:- the shell ring self-touches to create a hole touching the shell
- a hole ring self-touches to create two holes touching at a point
The default (following the OGC SFS standard) is that this condition is not valid (
false
).This does not affect whether Self-Touching Rings disconnecting the polygon interior are considered valid (these are considered to be invalid under the SFS, and many other spatial models as well). This includes "bow-tie" shells, which self-touch at a single point causing the interior to be disconnected, and "C-shaped" holes which self-touch at a single point causing an island to be formed.
- Parameters:
isValid
- states whether geometry with this condition is valid
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isValid
public boolean isValid()
Computes the validity of the geometry, and returns true if it is valid.- Returns:
- true if the geometry is valid
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getValidationError
public TopologyValidationError getValidationError()
Computes the validity of the geometry, and if not valid returns the validation error for the geometry, or null if the geometry is valid.- Returns:
- the validation error, if the geometry is invalid or null if the geometry is valid
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