OTOY Forums

1) Kind a dumb question. How to create spot light? Hard or soft.
2) How to make an area light with soft edges, like round gradient texture. When i put it into distribution channel and tryin to set up uv transform i get weird things like this:

Also even if i put a texture exactly as i want it shifts on light moving and rotating.
3) How to set up camera projection uv transformation in material editor. I also get shifted and stretched results when i follow tutorials on the net.
4) How to get absolutly neutral light color. Even with neutral response i get various tints of image, even if i set "use light color" on grey light source.
5) On the last project i had to put an image on background and glass capsule in front of to get glass distortion. Since its impossible to put an image on the background and keep it visible for refraction i put it on a plane and set up emission only material with power of 1 and texture on it. Then i noticed the image on the plane loses some quality on the render even with 1 filter size. Is there a way to solve this case?
6) Is there a way to hide object from being reflected and/or refracted like in the Compositing tag in common c4d?

Did you checked tutorials section? viewtopic.php?f=87&t=53262

2-You shouldn't make it visible when you use distribution pin. It's not working as uvmapped. It's a distributor for texture with spherical mapping.
3-two ways.
A- Using C4D camera mapping via texture tag as default ways. You need some extra divisions on face of model for avoiding the strecthin/shifting.
B- Using octane projection with perspective type.

4- Don't know what you mean. You can ask in standalone forum.
5- We don't expect quality loss. Maybe need better resolution.
6- Maybe with render passes and object masking.

1 Thanks, ill try this one.
2 I still dont get it, the thing i want to do is to change default area light appearance to change reflection shape. I want it with smooth edges in the reflection. I know i can make light invisible and put an object with texture in front of it, but maybe there is another way.
3 I used the A way, but i want to get rid f the way B because i still get this:

5 I just made a quick test, i rendered 4k image and there IS a difference:

These are small parts of two 4000x2250 images
6 I mean it would be great to have two more checkboxes (first two are Camera and Shadow visibility) for reflection and refraction in OctaneObject tag.

2- use texture pin for that
here is old cammapping samples. didn't checked i hope works

Other requests and questions are not up to plugins. Not a matter of putting checkboxes. Need support from the renderer. Not available until now.

aoktar wrote:2- use texture pin for that
here is old cammapping samples. didn't checked i hope works

Other requests and questions are not up to plugins. Not a matter of putting checkboxes. Need support from the renderer. Not available until now.

"use texture pin for that" in which channel should i assign a texture?


In your project there are these numbers in UV transform to get rid of distortion. Where did you get them? How to calculate em?

"use texture pin for that" in which channel should i assign a texture?

Image->texture slot of lighttag.

calculation is done by my eye. but it should be as ratio=width/height of image.