Peter, your attachement is what I did but it just returns the color, not
the texture (image).
Le 01/10/2013 11:34, [email protected] a écrit :
you can save the uv's as a custom attribute (set data --> self.myUVs )
and look them up in the rendertree with a vector attribute node.
you should find "myUVs" in the dropdown list -- which you can plug in
the uv coords input on any shader allowing for such an input -- eg --
Image Lookup.
a default texture node will look for an existing UV set and you cannot
plug another one in.
see attached tree -- which simply sets the attribute on emission, from
the emit location -- so that's very fast.
This can be done with any location -- so if you are looking up the
closest location on a group of deforming geometries every frame --
then yeah, it could become slow.
*From:* olivier jeannel <mailto:[email protected]>
*Sent:* Monday, September 30, 2013 11:00 PM
*To:* [email protected]
<mailto:[email protected]>
*Subject:* Re: Particle "taking uvs" from it's emitter
Grahame super big thanks ! Will try this tomorrow morning !
I think I will find it, but just in case, in the rendertree, what
datas do I need to get to have it render ?
And would it work with Arnold or is it MR only ?
Anyway, thank you !
Olivier
Le 30/09/2013 21:11, Grahame Fuller a écrit :
Plug Self.EmitLocation into the source port of a Get Data, then get
cls.Texture_Coordinates_AUTO.Texture_Projection.UVs.
gray
-----Original Message-----
From:[email protected]
[mailto:[email protected]] On Behalf Of olivier jeannel
Sent: Monday, September 30, 2013 2:13 PM
To:[email protected]
Subject: Particle "taking uvs" from it's emitter
Hi all,
Is there a way for :
Having an emitter (let's say a sphere) with a Texturemap (UV). And having some
particles (let's say discs) that would get the portion of UVs of its
EmitLocation ? (the litle piece of Uvs corresponding to where it is born) Not
the color, the UV.
If someone can point me to the correct direction... :)
I guess the sampling might be pretty long with 100K and more Particles.
Thank's a lot.
Olivier
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