RayCrossings Class Reference

Inheritance diagram for RayCrossings:

Collaboration diagram for RayCrossings:

Public Member Functions
String	getURI ()
double	relation (Geometry point, Geometry geom)
Value	evaluate (ValueFactory valueFactory, Value... args) throws ValueExprEvaluationException

Member Function Documentation

evaluate()

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

inherited

                                                                                                            {
                if (args.length != 2) {
                        throw new ValueExprEvaluationException(getURI() + " requires exactly 2 arguments, got " + args.length);
                }
        
                LiteralType l=LiteralRegistry.getLiteral(((Literal)args[0]).getDatatype().toString());
                LiteralType l2=LiteralRegistry.getLiteral(((Literal)args[1]).getDatatype().toString());
                if(l instanceof VectorLiteral && l2 instanceof VectorLiteral) {
                        Geometry geom=((VectorLiteral)l).read(args[0].stringValue());
                        Geometry geom2=((VectorLiteral)l2).read(args[1].stringValue());
                        Geometry transformed=LiteralUtils.transform(geom2, geom);
                        double result = relation(geom,transformed);
                        return valueFactory.createLiteral(result);
                }
                throw new ValueExprEvaluationException("Arguments given are not a geometry literal");
 
        }

References LiteralRegistry.getLiteral(), GeometricRelationDoubleFunction.relation(), and LiteralUtils.transform().

Referenced by AreaSimilarityTest.testAreaSimilarity(), AreaSimilarityTest.testAreaSimilarity2(), BBOXDistanceTest.testBBOXDistance(), CentroidDistanceTest.testCentroidDistance(), CentroidDistanceTest.testCentroidDistance2(), DistanceSphereTest.testDistanceSphere(), DistanceSphereTest.testDistanceSphere2(), HausdorffDistanceTest.testHausdorffDistance(), IntersectionPercentageTest.testIntersectionPercentage(), IntersectionPercentageTest.testIntersectionPercentage2(), ManhattanDistanceTest.testManhattanDistance(), MaxDistanceTest.testMaxDistance(), and MaxDistance3DTest.testMaxDistance3D().

getURI()

String getURI

(

)

                               {
                return POSTGIS.st_rayCrossings.stringValue();
        }

References POSTGIS.st_rayCrossings.

relation()

double relation	(	Geometry	point,
		Geometry	geom
	)

Reimplemented from GeometricRelationDoubleFunction.

                                                             {
                RayCrossingCounter counter=new RayCrossingCounter(point.getCoordinate());
                return 0.;
        }