Soft transform curve along a curved surface

Rhino
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1

I have a model of a chair that I am trying to add more complexity to.

I am trying to create a curve that is higher along the center and flatter along the edges and follows the curved surface of the chair.

This is kind off what I am trying to do

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image799×901 111 KB

I have tried soft transform and soft move but the results from those were not great.

Attached the file here for reference

Volu_chair_V3_fixed_V1.gh.3dm (1.7 MB)

2

image
image1222×962 90.5 KB

  • set up your geometry so it fits to world x y z
  • use _reflect
  • use much less faces in the subd

now you can just subd-model it

also nice but a bit tricky:
turn on _editPtOn of the subD.
Now you can _MoveUVN (N in your case) the surface points of the subd…

happy modelling / kind regards - tom

Volu_chair_V3_fixed_V1_TP_.3dm (7.2 MB)

3

You may give it a try with the new SoftTransform in RhinoWIP

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4

Hello Tom,

Thanks for the help, the model you made is exactly how I needed it.

I would like to know how you got the curve to be so smooth at the bottom surface ?

When I try to manipulate the faces or edges it gives a very sharp curve and looks ugly.

I also tried the editPtOn and MoveUVN commands and it looks like it requires immense patience to move each point into the required position.

Thanks again for your support

Regards,
Hussain

5

Thank you for this Jessen,

I will definitely try and get back on this.

6

are you working with the reduced amount - the rough model i suggested ?

i think i just used MoveUVN - and looked at it from the front view… nothing to special.
you can start with the inner Section of CV’s move them 2
then add the next CVs move all togehter 2
then more → 2
thenmore → 2
… so you move 8, 6, 4, 2 (steps, units or what ever…)

maybe some Gumball-ing but not so sure what i did last week…

if the new softtransform supports MoveUVN - this would be the fastest approach.

7

Thanks for your reply!

What do you mean by CV’s ? The points ?

When I use the editPton I can drag and move each individual point along the x,y,z axis but getting it to look like a nice smooth curve is what I am struggling with.

I am still a newbie at this software. (I am a lot better at solid works)

Appreciate all your support and help!

8

yes. CV = Control Vertex

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