UVEditor projections for geometry HELP

Rhino Rhino for Windows
1

Hello all,

I have an OBJ object that has a texture mapped on it (created using photogrammetry fbx and converted to OBJ) imported into rhino.

What i am trying to achieve as a final project is to be able to 3d print this teapot with some geometry and extrusions of the patterns (flower, dragon etc) on the tea pot.

The approach i am trying to take is by opening up the UVEditor and drawing my lines/extrusions on the texture file area. Then try to wrap this geometry (lines/extrusions) onto the teapot using the same “transformations” that have been applied to map the texture onto the teapot.

Is this possible?

Is there a better way to achieve what i am trying to get for my 3d print end results?

here is an image of the UVEditor result.

image
image1179×627 100 KB

Selecting the mesh on the texture(left) shows me the corresponding area that the texture is being mapped onto:

image
image1164×616 134 KB

Drew a shape from top view but dont know how to “transform” this line in the same manner as the selected mesh above to project it onto the teapot

image
image1052×647 61.8 KB

Attached is the working file.

Any help would be greatly appreciated!

Best,
Aston
teapot.3dm (3.1 MB)

2

Hi Aston - I do not think you can use the UV editor for this but you may, at least in some cases be able to fake it in other ways

  • Simply Project 2d curves from an elevation view.
  • Make a surface version of the target object and use UnrollSrfUV and FlowAlongSrf
  • Use Squish on subsets of the mesh and SquishBack to get the curves back to the mesh.

image
image915×1408 153 KB

-Pascal

3

Hi Pascal thank you for your response.

Is there a quick and efficient way to make a surface version of my target object?

4

Hi -

That would probably be by creating a profile curve (based on the result of the intersection of the mesh with a mesh plane) and revolving that.
-wim

5

Hi Wim and Pascal,

I have tried both methods and squish squishback works the best! Thanks for your help.

Just one last question, when i squish a mesh in rhino, the mesh is flattened to its real size. But when i type UVEditor, it asks me to draw a rectangle and the texture shown is relative to the size of the rectangle drawn.

Is there a way to get a accurate sizing for when i use the UVEditor command?

image
image1115×626 130 KB

image
image1054×718 119 KB

image
image1008×719 50.7 KB

  • Aston
6

Currently, no.

-Pascal