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blast node

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lemmingsammy
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SO I am using the blast node, with a voronoi fracture node. Is there a simple way to isolate random fractured groups and use them within the blast node group parameter? rather than select each part individually? If there isn't… whats the best way to achieve this.

My goal is to have some fractured parts be affected by a dop network and others not.

Thanks

Sam
Edited by lemmingsammy - June 4, 2017 15:22:14
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bonsak
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Check out the Group expression node. It has a preset for grouping n number of elements in the VEXpression dropdown:
rand(@elemnum) < 0.1

-b
Edited by bonsak - June 4, 2017 15:45:50

Attachments:
rand.hiplc (113.1 KB)

http://www.racecar.no [www.racecar.no]
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lemmingsammy
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Thanks for the reply, is the group expression node only in 16?

Oh also to add my very basic setup is as follows,

box
transform
pointsfromvolume
voronoi fracture
transform
blast
Edited by lemmingsammy - June 4, 2017 15:47:33
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bonsak
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If your using 15 put this in your Filter Expression field on your Group node and set Operation to Group By Expression:
rand($PR)<0.2

-b
Edited by bonsak - June 4, 2017 15:59:18

Attachments:
group.jpg (56.3 KB)

http://www.racecar.no [www.racecar.no]
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lemmingsammy
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Great, thankyou That works a treat!
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