ApproximateMedialAxis Class Reference

Inheritance diagram for ApproximateMedialAxis:

Collaboration diagram for ApproximateMedialAxis:

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

Protected Member Functions
Geometry	operation (Geometry geom)

Member Function Documentation

evaluate()

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

inherited

                                                                                                            {
                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().

getURI()

String getURI

(

)

                               {
                return null;
        }

operation()

Geometry operation ( Geometry  geom )

protected

Reimplemented from GeometricUnaryFunction.

                                                    {
                final ArrayList<LineString> list = new ArrayList<LineString>();
              final GeometryFactory gf = new GeometryFactory();
              /*
              final Coordinate[] coords = poly.getExteriorRing().getCoordinates();
              final Point xpoints[] = new Point[coords.length];
              for (int i = 0; i < coords.length; i++) {
                 xpoints[i] = new Point(coords[i].x, coords[i].y);
              }
              final Polygon xpoly = new Polygon(xpoints);
              final Skeleton skeleton = new Skeleton(xpoly);
              skeleton.execute();
              final List lines = skeleton.getLines(false);
              final Object[] array = lines.convertValuesToArray();
 
              for (int i = 0; i < array.length; i++) {
                 final Segment segment = (Segment) array[i];
                 System.out.println(segment.toString());
                 final Coordinate[] segmentCoords = new Coordinate[] {
                          new Coordinate(segment.getStartPoint().x, segment.getStartPoint().y),
                          new Coordinate(segment.getEndPoint().x, segment.getEndPoint().y) };
                 list.add(gf.createLineString(segmentCoords));
              }
 
              return gf.createMultiLineString(list.toArray(new LineString[0]));
              */
              return null;
        }