Angular Position controls

[jaf]

New user question about tg2.

I was curious about what the Angular Position controls in the Background (Sphere) panel do? 

I loaded a cloud image in the background surface shaders and had to adjust the camera to get it (image) centered.  I thought the angular controls would enable me to raise or lower the image or closeness, etc.  I see the preview updates when I make a change to these controls, but when I render, I don't see a change in the scene.  The enable box is checked.

I suspect there's something in the node network that I have to do, since I notice the Background output is not connected.  Or is this normal?

[choronr]

I think you have to click on 'set camera' after you reposition it.

[jaf]

"Set camera" is grayed out.

[Oshyan]

The Background Shader is really just a giant sphere around the entire scene (much larger than the default planet). It is there so that everything has something to render "against" - a requirement for some of the shaders, I believe.

In any case all spheres/planets have the same controls, including the "angle", "heading", etc. These operate in a traditional sense, but relative to the 0,0,0 coordinate origin. In the case of the Background Shader I'm not sure they would all function since it's a very large sphere centered around and encompassing 0,0,0.

If you have an image that you want to position precisely against the background shader I would just use Through Camera projection.

- Oshyan

[jaf]

Thanks!  That makes sense.