uvw map

Replies to This Discussion

Permalink Reply by David Rutten on June 28, 2013 at 2:14am

It is possible. Is it complex. I don't know how to do it.

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David Rutten

david@mcneel.com

Tirol, Austria

Permalink Reply by Vicente Soler on June 28, 2013 at 3:44pm

You can use the Mesh Contours component from the Millipede plugin or you could modify the definition I posted here (they do the same thing but I'd go for the properly coded component).

If you want the lines to follow the uv coordinates as in the image you posted, first get the texture coordinates for each vertex (use a vb.net script with the line:  a = x.TextureCoordinates), decompose them into x, y, z values, use the resulting x or y lists as the "values" input and, if you want the lines to follow the uv border, choose a number close to 0 or 1 for the iso value (like 0.001, if you use exactly 0 or 1 it will fail).

 

Permalink Reply by Francisco Lara on June 28, 2013 at 4:08pm

Thanks vicente I will get into it!

Sounds a bit complex but if I have some problems I will post again.

have a good day

Permalink Reply by Francisco Lara on June 29, 2013 at 4:12pm

I am having problems with the vb script.

Could you help me a little more with it?

thanks

Permalink Reply by Francisco Lara on June 29, 2013 at 4:36pm

I did what you advice me to do.

But there is no room for mapping curves on the mesh. I mean what if I wanna proyect lines over the geometry?

Here is what I have so far

Permalink Reply by Vicente Soler on June 29, 2013 at 5:43pm

Yes, that's all the steps I mentioned above. There's nothing more to do if you just want lines following the uv coordinates. What else are you looking for?

Permalink Reply by Francisco Lara on June 29, 2013 at 6:15pm

oh I see. My question is:

Is it possible to map lines over a shape? (mesh I mean)

for example make some planar pattern lines and then proyect them over a mesh like a texture would do

Permalink Reply by Vicente Soler on June 29, 2013 at 7:04pm

If the mesh uv coordinates are ordered as if it was a nurbs surface, you could do as with a surface. Use the uv coordinates of each vertex to create a new flat mesh, overlay the curves you want to remap on this mesh, decompose the curves into points, find the meshpoint for every curve point, use those meshpoints on the original 3d mesh and reconstruct the curves.

 

Most likely your mesh uv's aren't that well aligned or the mesh is closed. In that case you can use something similar to what we did before:

 

The curves you want to remap have to be inside the 1x1 unit square. This will work on closed curves. The mesh to the right contains a bitmap of the curve just to check that it's following the uv's of the mesh. The resolution of the curves will depend on the density of the mesh. I used weaverbird to subdivide the mesh faces.

Permalink Reply by Francisco Lara on June 29, 2013 at 10:48pm

I was thinking about doing something like this http://www.deskriptiv.de/form/zullc

do you think that this method would be the right approach?