How to shrink my selection group during a time ...

[adamg]

Hi,,

This is my first post here so BIG Hi to all of You. I am FX artist working at EvermotionVFX. Few months ago I touch Houdini... and its happened, end.

And now its time for some noob questions:

I've got group of points (selected by interpenetration of other objects). Now I want to "shrink" my selection (my selected points) in time by expression. Lets say, I want my points to fade out until frame 50 (for example) but without moving away my selection geometry.

Thanks for any help

A.

[gaurav]

Hi,

Not sure which type of point selection shrink ? you are looking but one way to achieve this would be to use an attrib del = rand($PT) and replace existing grp with filter expression $DEL>$F/($FEND-$FSTART)

hth,

grp.hipnc

[Xims]

Here you can try it with this setup using colors

ShrinkSelection.hipnc

Edited September 14, 2013 by Xims

[jbond]

Hi Adam.

Perhaps this solution works for your's task.

P\s\ so you want to switch from Max ?

Shrink_points.hipnc

Edited September 14, 2013 by jbond

[adamg]

Thanks guys. It's more than I expect I appreciate.

jbond> not exactly "switch" rather, to expend in some fields. Max is just max with some cool plugins. I realize that in some areas Houdini can give me more reliable and more stable (serious?) approach. Max+plugins are my primary tools... but some day...some day!