Normal vector to list of surfaces

Hello, i'm still trying to figure out how grasshopper works and have meet a problem. I have a surface that has been split using som plans, i get a list of surfaces out, and to thise surfaces i want to add a normal vector, but when I use the eval surface componet, it only give me one point even do I have 200 surfaces, i can find the center point to alle surfaces using the area command, it is only the normal vector i can't find, i hope some of you know how to do it.

Thanks

Attachments:

Split surface.3dm, 177 KB
Split surface.gh, 30 KB

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Permalink Reply by Matt Gaydon on January 7, 2016 at 7:43am

If you have not solved it yet. I have added a little script to your code which shrinks the surfaces. When you trim surfaces it keeps the underlying data unless you shrink the trimmed surfaces to the new edges. You where right to reparametrise the surfaces but as they where not shrunk its was looking at the same point on the original 60 + times.

import rhinoscriptsyntax as rs

s = rs.ShrinkTrimmedSurface(x, True)

I don't have time now but I recognise the split code you are using, i did not write it but should be able to add a switch to it so you can shrink the trimmed surfaces before the leave that script.

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