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From: Todd Kopriva <kopriva@adobe.com>
To: After Effects Mail List <AE-List@media-motion.tv>
Date: Mon, 30 Jul 2012 16:04:55 -0700
Subject: RE: [AE] Expressions: sampleImage on another layer?
Thread-Topic: [AE] Expressions: sampleImage on another layer?
Thread-Index: Ac1upmkMifxFEcHWTFWOCA9bBfRj+AAATb5g
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>From my experience, the real performance killer with sampleImage comes when=
 you're sampling with a large radius.

> -----Original Message-----
> From: After Effects Mail List [mailto:AE-List@media-motion.tv] On
> Behalf Of Chris Zwar
> Sent: 30July2012 15:55
> To: After Effects Mail List
> Subject: Re: [AE] Expressions: sampleImage on another layer?
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> FWIW, I've used the sample image expression on over 1900 layers in a
> single comp.
> Details are here:
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> http://provideocoalition.com/index.php/motiongraphicsvizfx/story/an_a_t
> o_z_of_building_projections_-_part_2/
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> What surprised me is that it rendered pretty quickly - about 4 seconds
> a frame.
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> -Chris
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> On 31/07/2012, at 3:08 AM, Byron Nash wrote:
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> 	Awesome, I did not know you could do that. Thanks for the tip
> Mylenium!
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> 	On Mon, Jul 30, 2012 at 11:54 AM, mylenium@mylenium.de
> <mylenium@mylenium.de> wrote:
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> 		It's the same like adressing any other remote property on
> another layer:
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> 		layer_name_here.sampleImage()
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> 		Mylenium
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> 		[Pour Myl=E8ne, ange sur terre]
> 		-----------------------------------------
> 		www.mylenium.de <http://www.mylenium.de/>
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> 		Byron Nash <byronnash@gmail.com> hat am 30. Juli 2012 um
> 17:51 geschrieben:
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> 			I am building a grid of layers with various controls
> on them. I'd like to drive some of the parameters with another layer's
> luminance and sampleImage. It's not practical to put that many
> sampleImage expressions on my effector layer since I have over 200
> layers. Is there a way to put the sampleImage on the grid layer that
> references the luminance layer for the sampleImage point?
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