topic Line intersect with block in .NET Forum

Line intersect with block

Anonymous — Wed, 20 Mar 2013 08:38:15 GMT

Hi All,

I find the intersected point of Line and block as this code:

'bref is a block reference
Dim tmpLine As New Line(pt1, bref.Position)
Dim ptCol As New Point3dCollection
bref.IntersectWith(tmpLine, Intersect.OnBothOperands, ptCol, 0, 0) 
Dim acLine As New Line(pt1,ptCol(0))

But the intersected point is not located on block as picture below. I don't know what happen.

Thank you for any help.

Re: Line intersect with block

Alexander.Rivilis — Wed, 20 Mar 2013 13:27:13 GMT

It is look like you found intersect point which on bounding box of block reference:

Intersecting any entity with a BlockReference and retrieving the intersection points

Re: Line intersect with block

Anonymous — Wed, 20 Mar 2013 13:50:06 GMT

I found the intersecting point of line and bounding box of block reference. Can you help me with VB.net code.

Thanks,

Re: Line intersect with block

Alexander.Rivilis — Wed, 20 Mar 2013 14:01:17 GMT

Easiest way is explode BlockRerence (method BlockReference.Explode but without adding entities to Database) and then intersect your's line with every entity in collection of exploded entities (maybe recursive if entity in collection is also BlockReference).