EnigmA Amiga Run 1995 November/EnigmA AMIGA RUN 02 (1995)(G.R. Edizioni)(IT)[!][issue 1995-11][Skylink CD].iso/earcd/docs/lwml9505.lha/LWML9505.TXT/[e-mail]_Mon May 22 06:00:07 1995.msg

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From: [e-mail] (Gonzalo Garramuno)
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J>  OK.  Now, how is the precedence of the effect determind?  To my ears,
J>  it seems that there must be some kind of implicit or explicit alpha
J>  channel defining how the each texture affects the previous texture.
J>
J>  And, of course, how is it placed?  In TrueSpace, you can see a rep-
J>  resentation of the bitmapular  :^)  rectangle.  Is something similar
J>  happening in Imagine?  Of course, for procedural stuff I assume
there's
J>  another system.

Imagine uses a bounding box for showing both the textures AND image maps.
These are shown in wire-frame and can be visually or numerically scaled,
rotated, and moved.  Although it is far from intuitive, it offers much
more control that LW.
The precedence of images/textures is only given thru the order in which
you use them.
Someone mentioned that an alpha image can be used to specify what parts
receive one texture and what parts receive another... as far as I know
this
is not so.
Textures also have a gadget for specifying the amount of mix.  The way
textures/images work in Imagine is okay, but it is not perfect, and I
like
LW's textures MUCH MORE (no matter if Imagine has 200+ of them).
As a matter of fact, I'd say procedural textures in Imagine are badly
implemented.    While most textures can be used as color, reflection and
transparency, you usually need special textures for bump.   In LW, almost
all textures can be used on all attributes.
In Imagine, I am still waiting to see a texture that can be used on
specularity, roughness, shininess or diffuse- an attribute missing in
Imagine).
Besides, in Imagine there is no falloff to speak of in either images or
textures, which limits the use of textures A LOT for special effects.

Finally, values in textures are not keyframed (neither are in
LW) so you still have to morph between two objects (or use the new States
function in Imagine 3.0+, which is as clumsy to use as morphing).  LW's
morphing (while far from perfect) is still much simpler to use.

Gonzalo Garramuno
[e-mail]
Carlos Sorin Cine S.R.L.
Buenos Aires, Argentina


... "Good Enough" is the death knell of progress.

--
[e-mail] (Gonzalo Garramuno) sent this message.
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