#growing a glow
26-Oct-94 03:14:06
Sb: #131309-#growing a glow
Fm: MARTIN G FOSTER 70303,456
To: michael poly 71604,332
Michael,
Video Post rules, OK? <G>
>> the glow.ixp description in my ipas manual does not seem to indicate how to
make a glow either grow or recede. <<
I don't think there is a one step process, but glows will naturally grow and
recede when the are dissolved or faded in and out – it's there nature. They
can't help it. Here's what I do:
1) render the scene *without* the glow
2) render the scene *with* glow in video post (VP)
3) composite in VP as follows:
layer 1: the full animated scene
layer 2: the glowed frame with fadeIN over n frames (2-5 looks good)
layer 3: the glowed frame with fadeOUT over n frames (10 looks good)
Try it and see. The above example would be an almost instant, burn-on type glow
which slowly dies out – standard logo fare <g>. Make sure the fadeOUT layer
starts after the fadeIN is complete. Looks like this:
scen*.tga o——————————-o
glow.tga fadeIN o–o
glow.tga fadeOUT o——–o
I hope this overblown example helps 🙂