View Full Version : Skydome generator for rendering

01-21-2004, 03:09 AM
3dmax has a skylight where it generates a skydome render without the dome, this would be excellent for LW and I believe it wouldnt be hard to make?
What do u guys think?

01-21-2004, 04:13 AM
Great feature!

The Dome trick is completely unusable when a scene needs Reflections/Refractions.

You can use the Dome Trick only for plain scenes... really bad limitation!


01-21-2004, 07:04 AM
Unseen by camera? :confused:

01-21-2004, 08:26 AM
"Unseen by Camera" is totally useless if you must use Reflections/Refractions!

Look at this simple scene (the attached image)... The Backdrop is black (R=G=B=0) but the Reflection captures the Dome... and it's really impossible to override this behaviour in any manner!
Really bad!


01-21-2004, 08:31 AM
Good example Exper...

To achieve this, how about Lightwave gets another form of light called um say Global Light where it hovers over the said object but creates a dome around it that can be seen in a selection type form if chosen in options so u can position it right, but doesnt show on renders.

01-21-2004, 08:47 AM
Unseen by rays? Or wont it light then? :confused:

01-21-2004, 09:06 AM
Unseen by Rays = no rays = no light = useless Dome! :(


01-21-2004, 09:22 AM
Ah ok .. I see ... damn ... I suggest someone make an email request, this is a good one. I'd suggest built in light inclusion/exclusion lists.

01-21-2004, 10:33 AM
Originally posted by Karmacop
I'd suggest built in light inclusion/exclusion lists. Misunderstanding... what do you mean?


01-21-2004, 11:39 AM
The solution is in having a new "SkyDome Light" type
or the many times requested:
Reflection exclusion list
Refraction exclusion list!


01-21-2004, 05:09 PM
Argh, it was late, that's what I meant Exper, thanks :)

01-22-2004, 02:49 AM
No problem! :D

Ade... send an email to NT...
let me know...
I'll send one in a couple on days (probably later :()!

01-22-2004, 06:12 AM
Does Newtek have an email for suggestions? or do I PM Chuck?

01-22-2004, 07:01 AM
[email protected]

that's where you should be sending any feature requests, they will get read there.

01-22-2004, 07:21 AM
Originally posted by Ade
Does Newtek have an email for suggestions? or do I PM Chuck? Ade... sorry!
I considered [email protected] as an obvious well-known address; I'll be less in a hurry next time! :D


03-26-2004, 05:12 PM
I was looking at these reflection threads in light of a recent need, but I wanted to respond on this topic specifically.

Have you guys considered using Texture environment with a gradient on the pitch?
It will light your scene the same way, but then you can reflect with Ray Tracing + Spherical Map and not have it show up.

Cheers, and forgive the old thread revival.

03-29-2004, 03:35 AM
Not sure what u mean?
Will it cast shadows?

03-29-2004, 08:23 AM
jeremyhardin... you're true;
it is a good approach and it's really fast using Backdrop Radiosity but it's far less configurable (only global) than the SkyDome Technique.

The best way to solve the problem is in having a SkyDome Light type (both Global and Local)! ;)

03-29-2004, 08:30 AM
I have an idea to be different from other packages.

how about if every object had its own "skydome" built in..
like every object emits an invisible space that is calculated by the radiosity engine and can be adjusted. This inivible guide looks like how falloff guides look and can even be switched off.
Like that it uses no polygons, is easily configurable and controllable.

States can be saved as presets and cause they are part of the object will follow it without havint to parent, link, group or whatever to it, while animating or moving...

Am I being over-zealous? is my idea feasable and useful, lets hear from u.

03-31-2004, 04:10 AM

03-31-2004, 04:17 AM
Below an example of the Texture Environment Gradient technique
(all surfaces are default R=G=B=220):

03-31-2004, 09:02 AM
your idea is really imaginative but I still think that a proper Light type is better... expecially if you need to illuminate more than one object with the same source!

The best should be a SkyDome Light type which can handle Texture/Gradients and Color envelopes (at least on the Local Type)!

Just my 2 cents! ;)