GeometricUnaryFunction Class Reference

Inherits Function.

Inherited by OctagonalEnvelope, PointOnSurface, Boundary, BoundingDiagonal, Centroid, ConcaveHull, ConvexHull, GeometricMedian, MinimumBoundingCircle, MinimumBoundingCircleCenter, MinimumClearanceLine, MinimumDiameterLine, MinimumRectangle, Normalize, CollectionHomogenize, DissolvePoints, DissolveSegments, FlipCoordinates, Force2D, Force3D, Force3DM, Force4D, ForceCollection, MakeValid, MakeValidDiscarded, Multi, Normalize, Points, Polygonize, Reverse, RotateX, ShiftLongitude, SimplifyPreserveTopology, TransScale, Transform, Translate, EndPoint, LineSelfIntersectionPoint, SelfIntersections, StartPoint, LineFromMultiPoint, Dissolve, LineMerge, ApproximateMedialAxis, Circumcentre, ExteriorRing, ForcePolygonCCW, ForcePolygonCW, LinesFromRings, and RingsCutAtNodes.

Collaboration diagram for GeometricUnaryFunction:

Public Member Functions
Value	evaluate (ValueFactory valueFactory, Value... args) throws ValueExprEvaluationException

Protected Member Functions
abstract Geometry	operation (Geometry geom)

Member Function Documentation

evaluate()

Value evaluate	(	ValueFactory	valueFactory,
		Value...	args
	)		throws ValueExprEvaluationException

                                                                                                            {
                if (args.length != 1) {
                        throw new ValueExprEvaluationException(getURI() + " requires exactly 1 argument, got " + args.length);
                }
                
                LiteralType l=LiteralRegistry.getLiteral(((Literal)args[0]).getDatatype().toString());
                if(l instanceof VectorLiteral) {
                        Geometry geom=((VectorLiteral)l).read(args[0].stringValue());
                        Geometry result = operation(geom);
                        return valueFactory.createLiteral(((VectorLiteral) l).unparse(result),((Literal)args[0]).getDatatype());
                }
                throw new ValueExprEvaluationException("Argument given is not a geometry literal");
        }

References LiteralRegistry.getLiteral(), and GeometricUnaryFunction.operation().

Referenced by BoundaryTest.testBoundary(), BoundingDiagonalTest.testBoundingDiagonal(), CentroidTest.testCentroid(), StartPointTest.testCircularString(), CircumcentreTest.testCircumcentre1(), CollectionHomogenizeTest.testCollectionHomogenize(), FlipCoordinatesTest.testFlipCoordinates(), Force2DTest.testForce2D(), Force3DTest.testForce3D(), Force3DMTest.testForce3DM(), Force3DMTest.testForce3DM2(), Force4DTest.testForce4D(), ForceCollectionTest.testForceCollection(), ForceCollectionTest.testForceCollectionZ(), ForcePolygonCCWTest.testForcePolygonCCW(), ForcePolygonCWTest.testForcePolygonCW(), EndPointTest.testLineString2D(), StartPointTest.testLineString2D(), EndPointTest.testLineString3D(), StartPointTest.testLineString3D(), MinimumBoundingCircleCenterTest.testMinimumBoundingCircle(), MinimumBoundingCircleTest.testMinimumBoundingCircle(), MinimumClearanceLineTest.testMinimumClearanceLine(), MinimumDiameterLineTest.testMinimumDiameterLine(), MinimumRectangleTest.testMinimumRectangle(), MultiTest.testMulti2D(), MultiTest.testMulti3D(), SelfIntersectionsTest.testNoSelfIntersections(), EndPointTest.testPoint(), StartPointTest.testPoint(), PointsTest.testPoints(), PointsTest.testPoints3D(), ReverseTest.testReverse(), SelfIntersectionsTest.testSelfIntersections(), ShiftLongitudeTest.testShiftLongitude(), SimplifyPreserveTopologyTest.testSimplifyVW(), and TransScaleTest.testTransScale().

operation()

abstract Geometry operation ( Geometry  geom )

abstractprotected

Reimplemented in RingsCutAtNodes, LinesFromRings, ForcePolygonCW, ForcePolygonCCW, ExteriorRing, Circumcentre, ApproximateMedialAxis, LineMerge, Dissolve, LineFromMultiPoint, StartPoint, SelfIntersections, LineSelfIntersectionPoint, EndPoint, TransScale, Translate, Transform, SimplifyPreserveTopology, ShiftLongitude, RotateX, Reverse, Polygonize, Points, Normalize, Multi, MakeValidDiscarded, MakeValid, ForceCollection, Force4D, Force3DM, Force3D, Force2D, FlipCoordinates, DissolveSegments, DissolvePoints, Normalize, PointOnSurface, MinimumRectangle, MinimumDiameterLine, MinimumClearanceLine, MinimumBoundingCircleCenter, MinimumBoundingCircle, GeometricMedian, ConvexHull, ConcaveHull, Centroid, BoundingDiagonal, Boundary, OctagonalEnvelope, and CollectionHomogenize.

Referenced by GeometricUnaryFunction.evaluate().