topic Re: vertically rotate / move around hotlink and object in Project data & BIM

vertically rotate / move around hotlink and object

Anonymous — Wed, 16 Jul 2025 14:21:13 GMT

Hello,
I want to:
(1) move around and place a hotlink to a specific location (not exactly on a strorey), need to move around in various views (plan, elevation, 3D views) and and
(2) vertically rotate a hotlink or an object (around the Z plane), seems now i can only input angle and rotate hotlink in horizantal plane,

Regards

Re: vertically rotate / move around hotlink

Erwin Edel — Mon, 07 Jun 2021 08:24:11 GMT

I would not recommend modelling to this level of detail. That said: instead of a module, you could create an object for the rooftiles and add a parameter for rotation.

Re: vertically rotate / move around hotlink and object

Anonymous — Mon, 07 Jun 2021 15:48:34 GMT

Hello Erwin,
yes object can be moved around, but as I saw:
(1) the parameter for rotation for both module and object are only for rotation within X plane, not for Y or Z plane....nor move around after be placed (neither X, Y nor Z plane)

Also since the vertial rotation of roof tiles varies on a curved roof plane, so there should be hundreds of parameters of vertical rotation (though the parameter of inclined rotation not found)

Thanks
Regards

Re: vertically rotate / move around hotlink and object

furtonb — Mon, 07 Jun 2021 18:07:38 GMT

You can add the ROTX, ROTY, ROTZ, or simply the ROT transform command the beginning of your 3D script.
http://gdl.graphisoft.com/reference-guide/3d-transformations

You can then control the rotation in 3D - to assign graphical hotspots, you need to dive into GDL a bit more and assign hotspots that control the rotation.
http://gdl.graphisoft.com/reference-guide/graphical-editing-using-hotspots

Modelling each tile seems an overkill though, but if you are modelling this for a university assignment or a demo project, then you could use the GH connection, where you could do the initial coordinate transformations with Grasshopper. You might lose some sense of control at first, but it's worth it in my opinion.

If you want to go the GDL way: in your case it seems you should move your coordinate system to the +Y with 323mm, then rotate along the X axis (ROTX) with a certain angle (the roof pitch minus an arbitrary angle to compensate for the overlap between tiles).

Re: vertically rotate / move around hotlink and object

Anonymous — Tue, 08 Jun 2021 01:31:04 GMT

Hello Furtonb
yes bingo I should not use other program but a pure BIM software, ( though I know blend rhin 3DX MY etc)

OK I try GDL someday,'

Thanks

Re: vertically rotate / move around hotlink and object

Barry Kelly — Tue, 08 Jun 2021 02:25:29 GMT

Modules are great for repetition and can be adjusted in height to any level.
However they can only be rotated in the horizontal plane (around the z-axis).

An object with a rotation parameter could be the way to go.

Otherwise you seem to like Morphs.
They can be rotated in 3D in any direction.

Barry.

Re: vertically rotate / move around hotlink and object

Hmooslechner — Tue, 08 Jun 2021 05:01:14 GMT

The GDL(library-part) - solution could be like this:

Re: vertically rotate / move around hotlink and object

Anonymous — Tue, 08 Jun 2021 15:07:13 GMT

great GDL, thanks all

Re: vertically rotate / move around hotlink and object

Anonymous — Tue, 08 Jun 2021 15:16:38 GMT

Barry wrote:
However they can only be rotated in the horizontal plane (around the z-axis).

I have noticed it for a while... and don't know if its a bug or a feature, but if you save only Morph elements as a module, then you can freely 3d rotate it as if it was a single element. If you save it along with any other element (Wall, Slab, etc) then when you update the module, the rotation is canceled and it behaves a a "regular" module.

Re: vertically rotate / move around hotlink and object

Barry Kelly — Wed, 09 Jun 2021 02:06:06 GMT

Braza wrote:

Barry wrote:
However they can only be rotated in the horizontal plane (around the z-axis).
I have noticed it for a while... and don't know if its a bug or a feature, but if you save only Morph elements as a module, then you can freely 3d rotate it as if it was a single element. If you save it along with any other element (Wall, Slab, etc) then when you update the module, the rotation is canceled and it behaves a a "regular" module.

Yes you are correct.
That is because morphs can be freely rotated in any direction.
Walls and slabs can't be, so as soon as they are in a module, the module is constrained to rotate only around the z-axis.

Barry.

Re: vertically rotate / move around hotlink and object

Anonymous — Wed, 09 Jun 2021 08:36:03 GMT

Hi Barry,
Thanks for the confirmation.
So it is a feature, correct?
It's because I saw sometime ago (maybe 2 updates ago) a bug related with this... Though it seem to be working fine now.

Re: vertically rotate / move around hotlink and object

Barry Kelly — Wed, 09 Jun 2021 08:57:06 GMT

Braza wrote:
So it is a feature, correct?

Feature, yes.
Documented feature, I am not sure.

I vaguely remember reading something about it some time ago but I can't remember where.

Barry.