GetGeometriesInView() публичный Метод

Returns geometries whose bounding box intersects 'bbox'

Please note that this method doesn't guarantee that the geometries returned actually intersect 'bbox', but only that their boundingbox intersects 'bbox'.

This method is much faster than the QueryFeatures method, because intersection tests are performed on objects simplifed by their boundingbox, and using the Spatial Index.

public GetGeometriesInView ( SharpMap bbox ) : List
bbox SharpMap
Результат List
Документация по классу ShapeFile
Пример #1
0
 public void TestTwoOpenClose()
 {
     ///Simulates two threads using the same provider at the same time..
     var provider = new ShapeFile(TestDataPath, false, true);
     provider.Open();
     provider.Open();
     provider.GetGeometriesInView(GetRandomEnvelope());
     provider.Close();
     provider.GetGeometriesInView(GetRandomEnvelope());
     provider.Close();
 }
Пример #2
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 public void TestTwoThreadsUsingDifferentProviders()
 {
     var provider1 = new ShapeFile(TestDataPath, false, true);
     var provider2 = new ShapeFile(TestDataPath, false, true);
     provider1.Open();
     provider2.Open();
     provider1.GetGeometriesInView(GetRandomEnvelope());
     provider1.Close();
     provider2.GetGeometriesInView(GetRandomEnvelope());
     provider2.Close();
 }
Пример #3
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        private Collection<IGeometry> GetBorders()
        {
            Collection<IGeometry> stateBorders;
            using (ShapeFile shapefile = new ShapeFile (ShpFileName)) {
                shapefile.Open ();

                // Get extents, assign to svg "viewbox" attribute.
                Envelope bbox = shapefile.GetExtents ();
                stateBorders = shapefile.GetGeometriesInView (bbox);

                shapefile.Close ();
            }
            return stateBorders;
        }