topic Re: Tangent Handles are missing! in Fusion Design, Validate & Document Forum

Tangent Handles are missing!

apaque205Q6LY — Fri, 13 Nov 2015 05:46:35 GMT

Is there something I have to turn on to show the tangent handles when I am editing the vertices on an object in sculpt mode? Could I have possibly modified the shape in a way that has shut the tangent handles off?

Thanks,

Adam

Re: Tangent Handles are missing!

NicolasXu — Fri, 13 Nov 2015 07:53:32 GMT

Hi Adam,

Tangent handles control the transition of the T-Spline faces at a creased edge or the end of an open body. You may take a look at the video below.

http://fusion360.autodesk.com/learning/learning.html?caaskey=caas/CloudHelp/cloudhelp/ENU/Fusion-Form/files/GUID-7A9E8FDC-E970-4FE4-BA8C-9F57739B6F53-htm.html

Best Regards,

Re: Tangent Handles are missing!

apaque205Q6LY — Fri, 13 Nov 2015 14:36:01 GMT

Thank you Nicolas, I got it now!

Re: Tangent Handles are missing!

simon.dyer — Fri, 26 Jan 2018 01:41:32 GMT

Hi - that link doesnt seem to be answereing the question any more. I too have missing tangent handles.

Re: Tangent Handles are missing!

simon.dyer — Sat, 03 Feb 2018 04:37:51 GMT

Please can someone help me - why cant I access the tangent handles on most points in Sculpt mode? I brought this surface as a face from modelling, and added some points hoping they would have tangent handles to shape this face
@jeff_strater

Re: Tangent Handles are missing!

laughingcreek — Sat, 03 Feb 2018 04:59:07 GMT

The answer remains the same. There will only be tangent handles at creased edges and open edges. just like in your screen shot.

Re: Tangent Handles are missing!

mavigogun — Sun, 02 Dec 2018 01:46:22 GMT

Control of non-Edge geometry is primitive; I often resort to eliminating and rebuilding entire sections just to change the tension/character of a single segment. That said, Alt+2 will display the Control net around the T-spline, affording some degree of control. With Edit, a scaling an Edge provides some ability to remove kings and curves. Some.

Re: Tangent Handles are missing!

TrippyLighting — Sun, 02 Dec 2018 12:18:46 GMT

Few tips:

1. Reduce mesh density by removing edge loops. Add detail after you are satisfied with overall shape and proportions

2. Model at lest 50% in box view mode.

3. If the need for modeling with dense meshes arises, enable soft soft modification in the Edit Mesh dialogue and adjust settings to your needs.

Re: Tangent Handles are missing!

osman-pasha — Sun, 28 Nov 2021 14:27:46 GMT

Hi. I still think there is a problem with missing tangent handles. Here is a screenshot with creased edge (bold) and no handles at all. For some reason sometimes I get 2-3 handles (out of a dozen points on a creased edge). I can't say when they appear of disappear.

Re: Tangent Handles are missing!

TrippyLighting — Sun, 28 Nov 2021 15:10:19 GMT

All I can say is that generations of Sub-D modelers have created sophisticated models, did not have tangent handles, and did not need them.

Keep your fingers away from the T-spline tangent handles and your models will be much happier!

Re: Tangent Handles are missing!

osman-pasha — Sun, 28 Nov 2021 17:38:31 GMT

Regardless, it looks like a bug to me. Bugs need to be reported and fixed.

Re: Tangent Handles are missing!

TrippyLighting — Sun, 28 Nov 2021 17:59:30 GMT

Agreed! Can you share the model?

Re: Tangent Handles are missing!

osman-pasha — Mon, 29 Nov 2021 09:03:25 GMT

Sure, here it is. Today I have only 1 handle per whole model.

Re: Tangent Handles are missing!

TrippyLighting — Mon, 29 Nov 2021 10:55:36 GMT

I m not quite sure yet, but after playing around some with this model I think this has to do with the number of triangles and N-Gons in your model. There should not be triangles in this model and I believe it should be possible to model without N-Gons as well.

Re: Tangent Handles are missing!

osman-pasha — Mon, 29 Nov 2021 12:22:25 GMT

Thank you for your response!

Here is another thing to consider. On a screencast I create 2 identical cylinders and add caps to them. 1 cap is made with "Fill Hole -> Collapse" option, and it has all the tangent handles, another hole is filled manually with "Insert point" to the exact same topology, but it has no tangent handles. So while the issue might be related to non-ideal topology, it is triggered by some internal state of Fusion that cannot be viewed via topology (same topology - different result).

Tangent handles missing on cylinder caps | Fusion 360 | Autodesk Knowledge Network