topic Re: Catch entities which intersected with a polyline in .NET Forum

Catch entities which intersected with a polyline

Anonymous — Sun, 09 Feb 2014 10:46:40 GMT

Hi All,

I have good experince with VB.Net, But i am new in prgramming for Autocad .

I had wrote code that catch all polylines on drawing, but now i have a problem, i need to catch that entities (blocks in my case) which intersected with each polyline.

any help please.

Thank you in advance.

Re: Catch entities which intersected with a polyline

Anonymous — Sun, 09 Feb 2014 11:51:32 GMT

Hi , to get intersection point between to entities you have to use 'entity.IntesectWith' function. With this function, you can get intersecting point. if for an entity if you get intersection point , you can add that entity in your list or array. you can have a look on below link where you can find how intersection point can be found between 2 entities.

http://forums.autodesk.com/t5/NET/Find-intersection-point-of-two-lines/m-p/4769671#M38812

Re: Catch entities which intersected with a polyline

Anonymous — Mon, 10 Feb 2014 05:33:18 GMT

Thank you very much Mr. mzakiralam
This is good try.
I know how to get intersection points using (IntersectWith) function, My problem is how to specify the type of the entity that intersects with the polyline.

Re: Catch entities which intersected with a polyline

Anonymous — Mon, 10 Feb 2014 09:22:32 GMT

entity.GetType() will help you to get entity type. you can also use below function.

Dim ent as entity = transaction.GetObject(ObjectId, OpenMode.Write)

If TypeOf ent is Polyline

'do as you want

End If