Class BufferResultValidator
- java.lang.Object
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- org.locationtech.jts.operation.buffer.validate.BufferResultValidator
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public class BufferResultValidator extends java.lang.Object
Validates that the result of a buffer operation is geometrically correct, within a computed tolerance.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.)
This test may be (much) more expensive than the original buffer computation.
- Author:
- Martin Davis
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Constructor Summary
Constructors Constructor Description BufferResultValidator(Geometry input, double distance, Geometry result)
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description Geometry
getErrorIndicator()
Gets a geometry which indicates the location and nature of a validation failure.Coordinate
getErrorLocation()
java.lang.String
getErrorMessage()
boolean
isValid()
static boolean
isValid(Geometry g, double distance, Geometry result)
static java.lang.String
isValidMsg(Geometry g, double distance, Geometry result)
Checks whether the geometry buffer is valid, and returns an error message if not.
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Method Detail
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isValidMsg
public static java.lang.String isValidMsg(Geometry g, double distance, Geometry result)
Checks whether the geometry buffer is valid, and returns an error message if not.- Parameters:
g
-distance
-result
-- Returns:
- an appropriate error message or null if the buffer is valid
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isValid
public boolean isValid()
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getErrorMessage
public java.lang.String getErrorMessage()
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getErrorLocation
public Coordinate getErrorLocation()
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getErrorIndicator
public Geometry getErrorIndicator()
Gets a geometry which indicates the location and nature of a validation failure.If the failure is due to the buffer curve being too far or too close to the input, the indicator is a line segment showing the location and size of the discrepancy.
- Returns:
- a geometric error indicator or null if no error was found
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