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EnigmA Amiga Run 1998 July
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EnigmA AMIGA RUN 29 (1998)(G.R. Edizioni)(IT)[!][issue 1998-07 & 08].iso
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Max_Brightness
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1998-02-16
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Date: Thu, 1 Jan 1998 23:35:00 +0000
From: Andy Stevens <andy@rivenrock.demon.co.uk>
Subject: [IML] DOS: Max brightness value in v4.0 too low?
This is something I thought to ask months ago but never got round to it...
I've got a scene with a bright, textured sphere for the sky with a
parallel light source inside it illuminating the other objects. Although
I've given the sphere the maximum brightness value, 255, there is a
visible diagonal line across it with a brighter area on one side. All I
can think of is that the light source (which is at an angle) is adding a
small amount of illumination to the sphere (one side has RGB 191,223,254
and the other is RGB 192,224,255) on the 'positive' side of its plane.
But if the object is fully bright, this shouldn't be possible!
My guess is that the "fully bright" value should be 256, but I haven't
been able to find a way to set the object to this (the slider only takes
it up to 255, and if I enter anything larger in the numeric box, it resets
it to 255 again). This is with Imagine DOS version 4.0, BTW.
Any suggestions? The only easy alternative I've come up with is to load
up each frame in turn into an art package and flood fill all the brighter
bits with the slightly darker shade.
---------------------------------
Date: Fri, 2 Jan 1998 06:41:42 -0500
From: gregory denby <gdenby@TWAIN.HELIOS.ND.EDU>
That would be my guess too. Try duplicating the light, and rotating it 180
on its z axis, so that you have a parallel beam facing the opposite direction
too.
As to why this would happen, my guess is that the texturing on the sphere
slightly interferes with the max brightness just a wee tiny bit. Just a
guess tho.