Selecting points at bottom of a mesh only

unhandled

(Carl D Williams123) #1

Hi everyone,

How can I best try to select only the vertices at the bottom of a defined rhino mesh. I have applied a deconstruct mesh component to get the verticies, however my mesh has 70,000 vertices. Hence why i need a quick way of selecting only the bottom layer. Ive tried to list item by unit z vector etc but doesnt seem to be doing what I need. Any ideas? Thanks.


(Ethan Gross) #2

You can take a look at this thread from the old forum. It uses the Sandbox plugin from
http://www.food4rhino.com/app/sandbox-topology

http://www.grasshopper3d.com/forum/topics/find-local-lowest-points-on-a-mesh?commentId=2985220%3AComment%3A1618687