topic Re: Find the intersect points between a polyline and and a circle in ArcObjects SDK Questions

Find the intersect points between a polyline and and a circle

DaveZhang — Tue, 18 Oct 2011 14:11:44 GMT

Hi, everyone

I need to find the way to get the intersect points between a polyline and and a circle using ArcObjects 10,

my C# codes something like this:

ITopologicalOperator topo = (ITopologicalOperator)baseline;
IGeometry intersects = topo.Intersect(circle, esriGeometryDimension.esriGeometry0Dimension);
IMultipoint multipoint = (IMultipoint)intersects;
IPointCollection Pts = (IPointCollection)multipoint;

but the function Intersect clash all the time, it gave me error like this:

Err: Exception from HRESULT: 0x80040585

can anyone help? thank you very much.

Re: Find the intersect points between a polyline and and a circle

WeifengHe — Mon, 05 Dec 2011 21:48:59 GMT

IGeometry intersects = topo.Intersect(circle, esriGeometryDimension.esriGeometry0Dimension);

In this line, what type of Geometry is circle? Is it of CircularArc or Polyline?

Re: Find the intersect points between a polyline and and a circle

ModyBuchbinder — Tue, 06 Dec 2011 03:53:04 GMT

Hi Dave

Try to check spatial reference on both geometries �?? it should be the same.

Have Fun
Mody