I learned something interesting about light sources in Bryce 4 today. Apparently Bryce does not like it when you try copying a light and repositioning it. Nor does Bryce like it when you change the center point location of a light. But for certain types of alignment (ie: radial) the best trick is to offset the center... Anyhow, what I learned is that lightsource copies are more or less "duds" as far as control is concerned. However, by experimenting I found out the solution to this problem. Every newly created light that was not a copy worked fine. Which lead me to try using the matrix information for a dud on a freshly created light. I used the cut/paste matrix for positioning new lights and happily, it worked. However, the offset cordinates still have to be set back to match the absolute ones (or it casts upon objects funny.) But it's better than nothing.

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Barbequed Pixels?

Your friendly neighborhood Wings3D nut.
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There might be something worth downloading.