Curves/NURBS modeling question

Support Modeling
#1

Dear Guys,
Sorry for bothering.
I an trying to model a solid, using curves and the taper/bevel objects. I am able to obtain solids like the last picture.
Too bad, I’m not able to model a solid that looks like the second and the first pictures:

  • to change exclusively the width of the section along the path (I can only scale the section with the same factor on both axis, using the TAPER object)
  • to twist the section along the path.
    Clearly, I realized the first two examples using normal shapes, just to explain the result I wish to obtain using curves/nurbs.

Thank you very much in advance for your help!

Enrico

Attachments

Icannotdoit2.jpg881×647 121 KB

Icannotdoit1.jpg882×648 134 KB

Icandoit.jpg882×647 127 KB

#2

hi, the first one could be done tilting the curve points, select a point and press ctrl+T then drag or enter a value… the other one i don’t think you can do it with a taper, why not draw the shape and add z extrusion to curve…?

#3

Dear Liero,
Thank you! I succeeded to make the first object (Ctrl-T). I didn’t know that option!

The other one… I didn’t understand your explanation, too bad. Can you tell me more about how to do? Is it still using curves/paths/nurbs, or meshes (cubes, cylinders…)? I can’t use them…

Your post have been helpful to me!

#4

For the first you can use a SimpleDeform modifier set to Twist
For image two you could use a lattice to deform

Attachments

Screen shot 2011-06-23 at 17.25.00.jpg694×453 55.1 KB

#5

Thank you Richard, for answering me.

The twisting is ok, both as you suggested (using Vertex Groups to limit the part of the curve) and as Liero suggested.

Using a lattice could work well for the shape I drew, but for more complicated ones like the one I attach here, I don’t know how to use it…

Thanks again,
Enrico

Attachments

twisted.jpg828×723 152 KB