EnigmA Amiga Run 1997 July/EnigmA AMIGA RUN 20 (1997)(G.R. Edizioni)(IT)[!][issue 1997-07 & 08][EAR-CD IV].iso/lightwave/lwmlist/95.lightwave-07/[e-mail]_Tue Jul 18 21:38:21 1995.msg

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Date: Mon, 17 Jul 1995 00:20:36 -0400 (EDT)
From: Joe Angell <[e-mail]>
Subject: Re: Grid Texture for Gradiant Surface...
To: Chris Purdie <[e-mail]>
Cc: [e-mail]
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It took me a bit to figure out just how this worked, too, but it works
great once it's figured out...

OK.  first, go into modeler.  Measure your object's height, and write it
down.  Also, write down where the highest point of the logo is.  Make sure
these #s are in meters.

Go into Layout.  Load your object, and load the Grid texture onto it.  No
go into the Texture panel.  Notice that the Line Thickness is 1 meter, as
well as the actaul Texture Size.  This means thst when renderd without
falloff, the whole surface will be the color of the Grid Line Color.

Now, go to the Texture Center and enter the # you wrote down earlier --
the one that points to the highest part of the logo.  Put that in the Y
for the texture Center.

Go to Texture Falloff.  Now you have to do some math.  Notice how there
already is a falloff in the Y.  That is the % per meter that the texture
will falloff, thus losing the grid color and becoming the Surface color
(and thus the cool gradient).  Take the the hieght of the logo, and figure
out the equation 1/HEIGHT=Y Falloff.  (ie:  1 meter divided by a 3 meter
logo height gives you 33%, or 33% falloff per meter on the Y axis).  Punch
that in.

Hit F9.  Now, you should see a nice gradient from the top of the logo to
the bottom.

Another cool trick is to do this on the luminosity channel.  Set the Grid
Value to 400%, and the Texture Center to the center of the logo.  Make the
Falloff REALLY BIG (say, 500% for a 1-meter object).  You'll get a really
cool, intense, almost lens-flare-like streak of white going across the
center of your logo, and falling off very quickly to the top and bottom.
Putting some X falloff so it's completly invisible JUST before the sides
of your logo migh tbe cool, too...

This is one of those things that should be explained better in the LW
manual (hint, hint, JG :) ).  Hope this helps...

-- Joe

--
Joe Angell <[e-mail]> sent this message.
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