BufferResultValidator class
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
Constructors
- BufferResultValidator(Geometry input, double distance, Geometry result)
Properties
- distance ↔ double
-
getter/setter pair
- errorIndicator ↔ Geometry?
-
getter/setter pair
- errorLocation ↔ Coordinate?
-
getter/setter pair
- errorMsg ↔ String?
-
getter/setter pair
- hashCode → int
-
The hash code for this object.
no setterinherited
- input ↔ Geometry
-
getter/setter pair
- result ↔ Geometry
-
getter/setter pair
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
checkArea(
) → void -
checkDistance(
) → void -
checkEnvelope(
) → void -
checkExpectedEmpty(
) → void -
checkPolygonal(
) → void -
getErrorIndicator(
) → Geometry? - Gets a geometry which indicates the location and nature of a validation failure.
-
getErrorLocation(
) → Coordinate? -
getErrorMessage(
) → String? -
isValid(
) → bool -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
report(
String checkName) → void -
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
Static Properties
- MAX_ENV_DIFF_FRAC → double
-
Maximum allowable fraction of buffer distance the
actual distance can differ by.
1% sometimes causes an error - 1.2% should be safe.
final
- VERBOSE ↔ bool
-
getter/setter pair
Static Methods
-
isValidGDG(
Geometry g, double distance, Geometry result) → bool -
isValidMsg(
Geometry g, double distance, Geometry result) → String? - Checks whether the geometry buffer is valid, and returns an error message if not.