I am learning to do UV mapping. I am not happy with the programs I have.

I only get to work on this ever once in a while.

Post a reply to this message

Attachments:
Download 'f1c3_f2-2.jpg' (77 KB)

Preview of image 'f1c3_f2-2.jpg'

"m1j" <mik### [at] hotmailcom> wrote:
> I am learning to do UV mapping. I am not happy with the programs I have.
>
> I only get to work on this ever once in a while.

I'm trying to do something with UV mapping too but I'm having a terrible
time of it.  Could you describe your method briefly please?

L
-

Post a reply to this message

"Loki" <nomail@nomail> wrote:
> "m1j" <mik### [at] hotmailcom> wrote:
> > I am learning to do UV mapping. I am not happy with the programs I have.
> >
> > I only get to work on this ever once in a while.
>
> I'm trying to do something with UV mapping too but I'm having a terrible
> time of it.  Could you describe your method briefly please?
>
> L
> -

I am not sure if I can say I actually have a good method.
I used UV Editor with Lightwave modeler to create a cylinder based UV map.
It did allow me to put the dirt marks in place but I have not been able to
put undistorted text on the surface. The logo and text in place now are
planer mapped with scaling to make it look right.

I am guessing I am going to have to position each point where I want it to
be. None of the UV programs seems to build the polygons to proportion. Like
you, I am in search of a UV mapping/editing program that works like I want
it to. I am even contemplating writing one.

Post a reply to this message

m1j wrote:
> 
> None of the UV programs seems to build the polygons to proportion. Like
> you, I am in search of a UV mapping/editing program that works like I
> want it to. I am even contemplating writing one.

Out of curiosity, how would you overcome this (out of proportion)? I 
have never used a uv mapping program, but the screen shots I have seen 
look like the program tries to lay out areas of triangles flat (requires 
stretching) so that a map can be drawn over them. Not distorting the 
triangles would mean that no more than a few triangles could be laid 
flat with their edges touching. Best case would be strips, which would 
require very careful construction of your model.

  -Shay

Post a reply to this message

On Fri, 17 Dec 2004 13:30:41 -0600, Shay wrote:

> m1j wrote:
>> 
>> None of the UV programs seems to build the polygons to proportion. Like
>> you, I am in search of a UV mapping/editing program that works like I
>> want it to. I am even contemplating writing one.
> 
> Out of curiosity, how would you overcome this (out of proportion)? I have
> never used a uv mapping program, but the screen shots I have seen look
> like the program tries to lay out areas of triangles flat (requires
> stretching) so that a map can be drawn over them. Not distorting the
> triangles would mean that no more than a few triangles could be laid flat
> with their edges touching. Best case would be strips, which would require
> very careful construction of your model.
> 
>   -Shay

If you are trying to put a pre-drawn 2D texture onto a 3D model, then
there will always be distortion - it's simply impossible to avoid it
(which is why Earth maps often appear pretty weird). On the other hand, if
you're making a texture specifically for this object, then the most
logical way would be to display the 3D object, give the user a set of
normal paint tools, and then map each pixel on the screen into the point
of 3D model's texture that is currently being shown under it.

In other words, a paint program that lets you draw onto 3D objects, rather
than a flat canvas.

Of course, I've never done UV mapping, so this comment propably contains
some foolish errors...

Post a reply to this message

In p.b.scene-files
Slime posted a solution reverse projecting a texture onto a set of 
precreated uv's.  It should have the effect of generating a uv map that 
would reproduce text with minimal distortion.
The post is titled:
"Baking UV texture with POV-Ray"

Post a reply to this message