void ESRI.ArcGIS.Display.ISymbol.QueryBoundary(int hDC, ESRI.ArcGIS.Geometry.ITransformation displayTransform, ESRI.ArcGIS.Geometry.IGeometry Geometry, ESRI.ArcGIS.Geometry.IPolygon Boundary)
{
// Check input parameters. Boundary may be a preexisting Polygon, so
// make sure it's geometry is cleared.
if (Geometry == null | Boundary == null)
return;
if (!(Geometry is ESRI.ArcGIS.Geometry.IPoint))
return;
Boundary.SetEmpty();
IPoint point = (IPoint)Geometry;
IDisplayTransformation displayTransformation = (IDisplayTransformation)displayTransform;
QueryBoundsFromGeom(hDC, ref displayTransformation, ref Boundary, ref point);
}
void ESRI.ArcGIS.Display.IMarkerMask.QueryMarkerMask(int hDC, ESRI.ArcGIS.Geometry.ITransformation Transform, ESRI.ArcGIS.Geometry.IGeometry Geometry, ESRI.ArcGIS.Geometry.IPolygon Boundary)
{
// Code QueryBoundary using same steps as Draw. But add a step where
// Points are converted to Map units, and then build an appropriate Polygon.
if (Geometry == null | Boundary == null)
return;
if (!(Transform is ESRI.ArcGIS.Display.IDisplayTransformation))
return;
if (!(Geometry is ESRI.ArcGIS.Geometry.IPoint))
return;
Boundary.SetEmpty();
IPoint point = Geometry as IPoint;
IDisplayTransformation displayTrans = (IDisplayTransformation)Transform;
QueryBoundsFromGeom(hDC, ref displayTrans, ref Boundary, ref point);
// Unlike ISymbol.QueryBoundary, QueryMarkerMask requires a Simple geometry.
ITopologicalOperator topo = Boundary as ITopologicalOperator;
if (!topo.IsKnownSimple)
{
if (!topo.IsSimple)
topo.Simplify();
}
}
