IsSquare Class Reference

Checks if the given geometry is a square. More...

Inheritance diagram for IsSquare:

Collaboration diagram for IsSquare:

Public Member Functions
String	getURI ()
boolean	attribute (Geometry geom)
Value	evaluate (ValueFactory valueFactory, Value... args) throws ValueExprEvaluationException

Detailed Description

Checks if the given geometry is a square.

Member Function Documentation

attribute()

boolean attribute

(

Geometry

geom

)

Reimplemented from GeometricBinaryAttributeFunction.

                                                {
                System.out.println(geom.getCoordinates().length);
                if(geom.getCoordinates().length==5 && geom.getCoordinates()[0].equals(geom.getCoordinates()[4])) {
                        Double distance01=geom.getCoordinates()[0].distance(geom.getCoordinates()[1]);
                        Double distance12=geom.getCoordinates()[1].distance(geom.getCoordinates()[2]);
                        Double distance23=geom.getCoordinates()[2].distance(geom.getCoordinates()[3]);
                        Double distance34=geom.getCoordinates()[3].distance(geom.getCoordinates()[0]);          
                        System.out.println(distance01+" "+distance12+" "+distance23+" "+distance34);
                        System.out.println(distance01==distance23 && distance12==distance34 && distance01==distance12 && distance23==distance34);
                        if(distance01==distance23 && distance12==distance34 && distance01==distance12 && distance23==distance34)
                                return true;
                }
                return false;
        }

evaluate()

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

inherited

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

References GeometricBinaryAttributeFunction.attribute(), and LiteralRegistry.getLiteral().

Referenced by IsCollectionTest.testGeometryCollectionIsCollection(), HasConnectedInteriorTest.testHasConnectedInteriorFalse(), HasConnectedInteriorTest.testHasConnectedInteriorTrue(), HasDuplicateRingsTest.testHasDuplicateRingsFalse(), HasDuplicateRingsTest.testHasDuplicateRingsTrue(), HasHorizontalCRSTest.testHasHorizontalCRSFalse(), HasHorizontalCRSTest.testHasHorizontalCRSTrue(), HasRepeatedPointsTest.testHasRepeatedPoints(), HasRepeatedPointsTest.testHasRepeatedPoints2(), HasSelfIntersectionsTest.testHasSelfIntersectionsFalse(), HasSelfIntersectionsTest.testHasSelfIntersectionsTrue(), Is3DTest.testIs3DFalse(), IsAcuteTest.testIsAcuteFalse(), IsAcuteTest.testIsAcuteTrue(), IsConvexTest.testIsConvexFalse(), IsConvexTest.testIsConvexTrue(), IsEmptyTest.testIsEmptyFalse(), IsEmptyTest.testIsEmptyTrue(), IsEquilateralTriangleTest.testIsEquilateralTriangleFalse(), IsEquilateralTriangleTest.testIsEquilateralTriangleTrue(), IsIsocelesTriangleTest.testIsIsocelesTriangleFalse(), IsIsocelesTriangleTest.testIsIsocelesTriangleTrue(), IsMeasuredTest.testIsMeasuredFalse(), IsMeasuredTest.testIsMeasuredTrue(), IsNodingValidTest.testIsNodingValuedTrue(), IsObliqueTriangleTest.testIsObliqueTriangleFalse(), IsObtuseTriangleTest.testIsObliqueTriangleFalse(), IsObliqueTriangleTest.testIsObliqueTriangleTrue(), IsObtuseTriangleTest.testIsObliqueTriangleTrue(), IsPlanarTest.testIsPlanarTrue(), IsPolygonCCWTest.testIsPolygonCCWFalse(), IsPolygonCCWTest.testIsPolygonCCWTrue(), IsPolygonCWTest.testIsPolygonCWFalse(), IsPolygonCWTest.testIsPolygonCWTrue(), IsRectangleTest.testIsRectangleFalse(), IsRectangleTest.testIsRectangleTrue(), IsRightTriangleTest.testIsRightTriangleFalse(), IsRightTriangleTest.testIsRightTriangleTrue(), IsSolidTest.testIsSolidFalse(), IsSquareTest.testIsSquareFalse(), IsSquareTest.testIsSquareTrue(), IsTriangleTest.testIsTriangleFalse(), IsTriangleTest.testIsTriangleTrue(), IsValidTest.testIsValidFalse(), IsValidTest.testIsValidTrue(), IsClosedTest.testLineStringClosed(), IsCollectionTest.testLineStringIsCollection(), IsRingTest.testLineStringIsNotRing(), IsRingTest.testLineStringIsRing(), IsClosedTest.testLineStringNotClosed(), IsCollectionTest.testMultiLineStringIsCollection(), IsClosedTest.testMultiLineStringNotClosed(), IsClosedTest.testmultiPointClosed(), IsCollectionTest.testMultiPointIsCollection(), IsCollectionTest.testMultiPolygonIsCollection(), IsClosedTest.testpointClosed(), IsCollectionTest.testPointIsCollection(), IsCollectionTest.testPolygonIsCollection(), SridHasFlippedAxisTest.testSridHasFlippedAxis(), SridIsGeographicTest.testSridIsGeographicFalse(), SridIsGeographicTest.testSridIsGeographicTrue(), SridIsProjectedTest.testSridIsProjectedTrue(), and SridIsVerticalTest.testSridIsVerticalTrue().

getURI()

String getURI

(

)

                               {
                return POSTGIS.st_isSquare.stringValue();
        }

References POSTGIS.st_isSquare.