Forums Technical Discussion How to snap an object to another precedurally?

How to snap an object to another precedurally?

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raincole
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Say I have a cone and a sphere:



I'd like to snap the cone to the closest point on the sphere, along the direction {0, -1, 0}. Like this:



I know Ray SOP, but it snaps every point to the sphere:




I'd like to keep the cone as a cone. Is there a node to do this procedurally?

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Andr
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Check "Match Size" Sop
Edited by Andr - Jan. 1, 2022 02:00:27
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raincole
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Andr
Check "Match Size" Sop

In this case Match Size SOP works, but I'd like to know how to make it more generic. For example when the ray I cast doesn't align with the world axes (e.g. {0.811, 0.32, 0.48}). I'm trying to make something just like Ray but only ray the closest point, and translate the rest of the geo accordingly. Is it possible?
Edited by raincole - Jan. 2, 2022 03:22:21
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animatrix_
animatrix_
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Hi,

You can do it generically like this:



Find nearest point wrangle code:

int pt = nearpoint ( 1, @P );
vector p = point ( 1, "P", pt );

@dist = distance2 ( @P, p );
i@nearpt = pt;

Sort by dist attribute.

Move wrangle code:

int pt = point ( 1, "nearpt", 0 );

vector p0 = point ( 1, "P", 0 );
vector p1 = point ( 2, "P", pt );

@P += p1 - p0;
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raincole
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animatrix_
Hi,

You can do it generically like this:

It's really informative. Thank you very much!
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