bagginsbill opened this issue on Oct 25, 2007 · 273 posts
bagginsbill posted Fri, 30 May 2008 at 4:25 PM
If the ground shows up, just raise the diffuse value - no need to turn the light back on.
But, yes, the numerical value produced for a lit part of the floor (versus shadowed) will obviously change.
Basically all I'm doing is using the Diffuse node to find out how brightly lit that spot is. If it's bright, I reduce the opacity (because I'm using 1 - diffuse). If it's not bright, then 1 - diffuse becomes a larger number, which increases the opacity.
The actual color of the floor is always black. Changing the opacity introduces a corresponding change in the alpha value only. This creates the "shadows" when you superimpose it on any background.
Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)