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  • manual_constraints_01.hip
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EDIT: As Morgan pointed out in the comments, I made a huge mistake by setting my geowrangles to run over points. I've attached a second scene file with correct geo wrangle settings. Thx, Morgan.


When you're trying to create silly string in Vellum it suddenly hits you - you have to wrangle your own constraints in DOPs.

In this tutorial we'll tackle creating a silly string setup including manual constraint creation and a neat little hack to our Vellum Source DOP.

Here's the link to cgwiki I mention in the video:

http://www.tokeru.com/cgwiki/index.php?title=HoudiniDops#Grain_emitted_noodles

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Grains & Vellum 101 pt. 6: Manually Creating Vellum Constraints

Download Project File: https://www.dropbox.com/s/doovb4gcl1d18k3/manual_constraints_01.hip?dl=1

Comments

jeremy jozwik

i dont know why i have always been using 0,1,3 for the dopnet object merge field. the actual sim object name makes so much more sense... - ____ -

Wirginia Romanowska

Funny - this is exactly the thing I wanted to do after seeing previous tutorial. Will definitely render something silly with this. Thanks!

Morgan Visconti

This setup is cool, however I noticed the constraint geo increases in primitives exponentially as it's creating a new set every frame for all existing points (that already have constraint primitives) and the sim slows down accordingly.

Morgan Visconti

Ah! Setting the two geometry wrangles to detail (rather than running over points) has fixed it.

Saulo Arruda Mendes

Great Tutorial! Is it possible to have more than one point generating the polyline? I am a newbie in Houdini, and I tryed to add two points in the add points nodes, and everything messes up.