topic Re: [GDL] Can the REVOLVE command change the coordinates of points at the starting and ending sectio in GDL

[GDL] Can the REVOLVE command change the coordinates of points at the starting and ending sections?

yongler — Thu, 26 Sep 2024 11:50:58 GMT

Can the REVOLVE command change the coordinates of points at the starting and ending sections?

The GDL component in the figure below was generated using the REVOLVE command, and I want to make the elevation of a point in the starting and ending sections different. But I can't do it.

ang = 90 R1 = 1.5 tu_H= 0.25 pen 3 material 6 ROTy 90 REVOLVE 6, ang, 16+32 , 0, R1 , 2, -1.2, R1 , 2, -1.2 , R1+ 0.2 , 2, -0.6 , R1+ 0.2+tu_H , 2, 0 , R1+0.2, 2, 0, R1 , 2 DEL 1

Re: [GDL] Can the REVOLVE command change the coordinates of points at the starting and ending sectio

runxel — Thu, 07 Sep 2023 12:57:03 GMT

No, REVOLVE does not allow for variable, altering curve profiles.

I also don't know how this geometrically would work. You would need something like Sweep2Rails from Rhino for crazy surfaces like this.

Re: [GDL] Can the REVOLVE command change the coordinates of points at the starting and ending sectio

yongler — Thu, 07 Sep 2023 13:24:01 GMT

I imitated Grasshopper and created GDL's surface components, which can parameterize and control shapes. It looks great, written in pure GDL scripts. But I encountered trouble at the arc corner.

I hope GDL has a command similar to XFORM, where the geometry can be curled along an arc after this command.

Re: [GDL] Can the REVOLVE command change the coordinates of points at the starting and ending sectio

Funfun Yan — Tue, 12 Sep 2023 10:54:21 GMT

How did you make the GDL's surface components?

Re: [GDL] Can the REVOLVE command change the coordinates of points at the starting and ending sectio

Toper Barrientos — Fri, 08 Sep 2023 06:22:46 GMT

Shapes Generated from Polylines | GRAPHISOFT GDL Center

Hi all.

Kindly check/study these GDL commands.

For calculating angular velocity (curving vectors), check the curved rail topic fr the DNC's GDL cookbook 3 or 4. Hope this helps. 🙂 .

Re: [GDL] Can the REVOLVE command change the coordinates of points at the starting and ending sectio

Toper Barrientos — Fri, 08 Sep 2023 07:11:11 GMT

https://gdl.graphisoft.com/reference-guide/shapes-generated-from-polylines#TUBEA_gdlcommand

Also about tubes with diff. profiles fr . start & end points.