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From: Robert Kjettrup <robert@stvmayday.dk>
Date: Wed, 26 Sep 2012 14:57:10 +0200
Message-ID: <CAFu=taaVdZ8ZxF8Mu6fC+uc4b2aCdnjOvp2mtrvQdKL5s2cM9g@mail.gmail.com>
Subject: expression for facing away layers in precomp
To: After Effects Mail List <AE-List@media-motion.tv>
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Hi

I am using this expression to make the layers that face away from the
camera be invisible.

if (toCompVec([0, 0, 1])[2] > 0 ) value else 0
(found via Dan's site here:
http://www.motionscript.com/design-guide/invisible-facing-away.html)

But when i use the comp as a precomp with continious rasterize option
turned on, the 3d layers that i has the expression ofcourse don't respect
 the camera in the master comp. Is it possible to write an expression that
uses the display camera in the master comp that affects the opacity og the
3d layers in the continious rasterized precomp?


Robert Kjettrup / Grafiker / STV Mayday
Mobil: 25 18 95 16
Mail: robert@stvmayday.dk

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Hi<div><br></div><div>I am using this expression=A0to make the layers that =
face away from the camera be invisible.=A0</div><div><br></div><div>if (toC=
ompVec([0, 0, 1])[2] &gt; 0 ) value else 0=A0</div><div>(found via Dan&#39;=
s site here:=A0<a href=3D"http://www.motionscript.com/design-guide/invisibl=
e-facing-away.html">http://www.motionscript.com/design-guide/invisible-faci=
ng-away.html</a>)</div>

<div><br></div><div>But when i use the comp as a precomp with continious ra=
sterize option turned on, the 3d layers that i has the expression ofcourse =
don&#39;t respect =A0the camera in the master comp. Is it possible to write=
 an expression that uses the display camera in the master comp that affects=
 the opacity og the 3d layers in the continious rasterized precomp?</div>

<div><br></div><div><br clear=3D"all">Robert Kjettrup / Grafiker / STV Mayd=
ay<br>Mobil: 25 18 95 16<br>Mail: <a href=3D"mailto:robert@stvmayday.dk" ta=
rget=3D"_blank">robert@stvmayday.dk</a><br>
</div>

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