Spline tangents in Scene Nodes

[crash-business]

Trying to recreate in Scene Nodes Mograph setup for soft connections between objects. Struggling with controlling tangents, for some reasons spline becomes closed and it causes artifacts. Also spline not affecting to Null(Start) rotation, only position. Spline tangents in Scene Nodes 01.c4d

[Dr. Sassi]

Hi crash-business,

Thanks for the file! It helps a lot, as I don't have all the answers by now…

The Tangents are not happy with the Matrix information. I used the V1 of the Matrix here, assuming the Null will not be scaled. (V2 or V3 would work as well, but starting in a different direction) This V1 has all the information for one Tangent. More about this here:
https://help.maxon.net/c4d/2026/en-us/Default.htm#html/NET_MAXON_NEUTRON_ASSET_GEO_COMPOSETANGENT-NET_MAXON_NODE_BASE_GROUP_INPUTS.html?TocPath=The%2520Node%2520Editor%257CThe%2520individual%2520Assets%257CGeometry%2520Utility%257CCompose%2520Tangent%257C_____2

CV4_2026_drs_25_SNrt_01.c4d
(Press play, I have animated the Null - to see it working)

(The icon for the Null is not needed but for the demo, helpful.)

The Spline wasn't closed. Please check the "Assemble Spline Node"; the checkbox is not set.

I hope that helps.

Enjoy your exploration!

Cheers

[Dr. Sassi]

P.S.: I have explored your file a little bit more:

Perhaps that allows you to create what you like to have.

CV4_2026_drs_25_SNrt_21.c4d

You can move and rotate the Null [Start] as well as the Landscape.
In the Inputs, I have set the Tangent Length.

Enjoy.

[crash-business]

Hi Dr. Sassi! Thanks for nice setup!!

[Dr. Sassi]

You're very welcome, crash-business.

Thank you for your kind reply!

Have a great weekend