Bending a textured face

hellnbak · 2 Dec 2010, 14:36

(Although I don't suppose hellnbak is looking for laborious modelling)

Is anybody?

Gaieus · 2 Dec 2010, 17:55

Is anybody?

Even if I am not deliberately looking for it, I do not mind doing it when I know I cannot achieve it otherwise and the result is worth the laborious way. Wrapping a texture around a curved face should not take longer (even if you go facet by facet) than writing a forum post.

This window below is on a curved wall (a basilica apse), arched and all the edges are rounded. So there was no other way than manually doing it.

(By the way, in this model, all the edges are rounded everywhere as you can see from the buttress, too, so when I made the textures, I even counted the pixels how they would wrap around to make a seamless tiling when they reach around pillars and such - tell me about labour! )

Roger · 2 Dec 2010, 18:16

The leather textures were applied to the curved shape with hidden geometry showing and clicking the paint texture tool at each change of plane. Rendered in Twilight Render using Metropolis Light Transport with Bidirectional Path Tracing. This is one small part of my project without end.

hellnbak · 3 Dec 2010, 06:42

@gaieus said:

If this object is bending only one direction, you should not use projected material on it but simply wrap it around the curve.

Could you please elaborate? I've tried so many things with this I'm not sure if this is one of them.

Gaieus · 3 Dec 2010, 08:42

Where's that model?

hellnbak · 3 Dec 2010, 10:12

If you mean the jpg for the mat, here it is

Gaieus · 3 Dec 2010, 10:35

@hellnbak said:

If you mean the jpg for the mat, here it is

Well, not really the jpg but the model (as I do not know where and how you wanted to bend it) however here it is

Mat.skp

hellnbak · 3 Dec 2010, 10:44

Great! Now, could you please explain the process of what you did?

Gaieus · 3 Dec 2010, 10:51

Some pictures. After sampling / painting in picture 5, repeat the steps for the rest of the facets. It takes less than a minute. The point is that now you are not projecting but wrapping the material around that curve by positioning it.

(Sorry, previously I attached a wrong screenshot)

Dave R · 3 Dec 2010, 11:18

Excellent Csaba.

hellnbak · 3 Dec 2010, 11:24

Finally! I won't have to track mud and snow into my nice clean Goat. Much appreciated!

Gaieus · 3 Dec 2010, 11:28

Good thing in Fredo's plugin that it keeps the sizes of all the facets and the rest of the model as a whole (so the image will fit exactly as it does on the flat one). Bad thing is that it screws up UV mapping even when I position the texture before subdividing (i.e. all the texture pieces should still be positioned - or not? I will have to check).

Edit; even if I "pre-position" the texture on each facet first, the plugin screws everything up. I wonder if Fredo could do something with it.