texture projection

[woodenduck]

Hi people,

So I want to project an image. Let's say a grid on to a sphere. But I don't want to project on to the entire sphere, I don't want the image to wrap all the way around.

Any of the UV sops just seem to wrap around the sphere, I just want to texture the front faces.

I tried using a ray sop, but that doesn't project accurately and rounds off the edges of the grid.

Imagine draping a square cloth over a sphere, that's what I'm after (But without the creases of course, ;D)

[anim]

UV Project SOP

projection set to polar

then change UV range parameters to specify actual crop you want from full spherical projection

it actually has nice handles in viewport, just press Enter and crop it there

then in material on Texture VOP you must set Wrap to Decal so it will not repeat your texture outside specified region

for OGL there is Clamping checkbox for that

Edited January 8, 2013 by anim

[woodenduck]

That's not exactly what I'm after. The UV Project just cuts the uvs off along a given plane, much like the clip sop does with geometry.

I am trying to achieve something like this - (see below) I did this by applying uvs to a grid and stretching it over a sphere using a spring sop. What I would like to do is create the same result but directly on to the sphere with some sort of uv projection, if that is possible!?!?!

Cheers

Edited January 9, 2013 by woodenduck

[tjeeds]

Use a UvTexture with type set to Perspective From Camera and point it to an orthographic camera

[anim]

here is what I meant with uvproject, it doesn't crop the uvs, it just take crop from spherical projection as full 0-1 uvs

have a look

don't mind the streaking edges in the viewport, render will be ok

uvproject_range.hip

[woodenduck]

Ah! Thanks anim, that's it exactly, cheers!