Extend surface

Rhino Rhino for Windows
1

Fellows,

I do a lot of untrimming surfaces and then extend them. at the moment I extend every edge per time.
is there a way to extend all edges in one?

for example ‘extendsrf>extend all edges>100(mm)’

looking forward for your reply,

Albert

2

you have to do it with a script I think

import rhinoscriptsyntax as rs
srf = rs.GetObject("pick srf",rs.filter.surface)
num = rs.GetReal("distance to extend")

if num and srf and not rs.IsSurfaceTrimmed(srf):
    du = rs.SurfaceDomain(srf,0)
    dv = rs.SurfaceDomain(srf,0)
    dum = (du[0] + du[1]) / 2.0
    dvm = (dv[0] + dv[1]) / 2.0
    length = num #5
    rs.ExtendSurface(srf,(du[1],dvm),length)
    rs.ExtendSurface(srf,(du[0],dvm),length)
    rs.ExtendSurface(srf,(dum,dv[1]),length)
    rs.ExtendSurface(srf,(dum,dv[0]),length)

!_ RunPythonScript “… path to the script…”

run the script from the commandline, the macroeditor or from a button

ExtendTrimmedSrf_allEdges_01.py (547 Bytes)

hope this helps - kind regards -tom

3

Hi Tom,

Thanks a lot! I have a few questions:

Can we make the macro so that it works on more selected surfaces at the same time?

How do I get it into a button?

image001.jpg

4

for multiple surfaces:

ExtendMultipleTrimmedSrfs_allEdges_01.py (770 Bytes)

the link above shows how to assign a script to a button.

5

HI tom,

I switched to Rhino 8, it looks like it can’t run python scripts anymore.

do you know a way to solve this?

thanks, Albert

6

Hi Albert -

Did you use the RunPythonScript command?
-wim

7

:sleeping:no I didn’t, I always went there through options…

thanks for the headsup!

8

Hi Tom,

I use the script a lot, there is one small thing: it extends 3 sides only. can you make it that it extends all sides?

thanks a lot!

best regards, Albert

9

fast and dirty…

ExtendMultipleTrimmedSrfs_allEdges_02.py (1.1 KB)

?

if it does not do the job - please post a file where the script does not work

10

I tried it, it worked.

I’m going to use it further and see if it works in reality. keep you posted…