topic Re: Extract Control Points of a Surface into a Textfile in Alias Forum

Extract Control Points of a Surface into a Textfile

mralexandermiller — Tue, 06 Apr 2021 11:10:41 GMT

Hello, friends! Can you please answer me, how can one extract control vertices of some individual surface in Alias and save it as a textfile? I need to do this for some mathematical conversions and calculations, but if a surface consists of for example 16 CVs it would be very difficult to copy 48 coordinates (16 for 3 in each dimension). So I suppose that it probably exists some way to do it automatically or semi-automatically.

thanks a lot!

Re: Extract Control Points of a Surface into a Textfile

BarryKimball — Tue, 06 Apr 2021 15:46:58 GMT

There is no quick or easy way to do this...it is possible...you need to first install the export curve coordinates plug-in. Utilities-> plugin-manager-> data transfer-> export curve coordinates. Then you will need to create a edit point degree 1 curve by snapping (ctrl_LMB) all the control points of the curve to the surface you control points. Then select that curve and click the file-> export curve coordinates option box...set the degree 1 curve sampling to 1

Re: Extract Control Points of a Surface into a Textfile

c3systems — Tue, 06 Apr 2021 15:55:16 GMT

If you are familiar with Dynamo, you can easily get the CVs of a surface and write it out as a CSV file.