public override void Visit(GeoWalkContext <Point> p)
{
if (p.HasParentCorrespondingTo <Feature>() && FeatureRepresentsCircle((Feature)p.Parent.Item))
{
return;
}
_bld.BeginGeography(OpenGisGeographyType.Point);
PointFigure(p.Item);
_bld.EndGeography();
}
public override void Visit(GeoWalkContext <Feature> f)
{
var feature = f.Item;
if (FeatureRepresentsCircle(feature))
{
var coords = (GeographicPosition)((Point)feature.Geometry).Coordinates;
var p = SqlGeography.Point(coords.Latitude, coords.Longitude, GeoToSql.ReferenceId);
var radius = Convert.ToDouble(feature.Properties["radius"]);
var circle = p.BufferWithCurves(radius);
_pendingCircles.Add(circle);
}
}
public override void Visit(GeoWalkContext <LineString> ls)
{
// Line strings are used as items in polygons, but in an isolated context
// they also neeed to be introduced with BeginGeography
if (!ls.HasParentCorrespondingTo <Polygon>())
{
_bld.BeginGeography(OpenGisGeographyType.LineString);
}
AddAsBeginFigure(ls.Item.Coordinates[0]);
foreach (var position in ls.Item.Coordinates.Skip(1))
{
AddAsLine(position);
}
_bld.EndFigure();
if (!ls.HasParentCorrespondingTo <Polygon>())
{
_bld.EndGeography();
}
}
public virtual void Visit(GeoWalkContext <FeatureCollection> fcl)
{
}
public virtual void Visit(GeoWalkContext <Feature> f)
{
}
public virtual void Visit(GeoWalkContext <GeometryCollection> gcl)
{
}
public virtual void Visit(GeoWalkContext <MultiPolygon> mpl)
{
}
public virtual void Visit(GeoWalkContext <Polygon> pl)
{
}
public virtual void Visit(GeoWalkContext <MultiLineString> mls)
{
}
public virtual void Visit(GeoWalkContext <LineString> ls)
{
}
public virtual void Visit(GeoWalkContext <MultiPoint> mp)
{
}
public virtual void Visit(GeoWalkContext <Point> p)
{
}
public override void Visit(GeoWalkContext <MultiLineString> mls)
{
_bld.BeginGeography(OpenGisGeographyType.MultiLineString);
mls.SetExitActivity(() => _bld.EndGeography());
}
public override void Visit(GeoWalkContext <Polygon> pl)
{
_bld.BeginGeography(OpenGisGeographyType.Polygon);
pl.SetExitActivity(() => _bld.EndGeography());
}
public override void Visit(GeoWalkContext <FeatureCollection> fcl)
{
_bld.BeginGeography(OpenGisGeographyType.GeometryCollection);
fcl.SetExitActivity(() => _bld.EndGeography());
}
public override void Visit(GeoWalkContext <MultiPoint> mp)
{
_bld.BeginGeography(OpenGisGeographyType.MultiPoint);
mp.SetExitActivity(() => _bld.EndGeography());
}
