# vellum - no stretching

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Hi everyone,

I am learning vellum right now, and I made a simple set up of a rope falling down with vellum and I really liked the look of it.

But when I applied a wind on it, the rope started stretching, I was wondering how I can make the rope look tighter without any stretching.

vellum_noStretching.hipnc

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start again, don't use a box...simple line, feed that into vellum as a string.

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are there any other way to do it? I wanted to apply it to a pirate ship model, where the rope come in as cylinders already.

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if you're stuck with what's given to you, then struts.

There's intersections here...but it's just an illustration, someone will have to do cleanups.

vu_RopeFromCyls.hiplc

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it makes a lot of sense to try to make this rope into a line and sim it as "hair"

You can try to set something up with the shortest path sop and find star/end points with group by open edges

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On 03/10/2020 at 2:52 AM, Noobini said:

if you're stuck with what's given to you, then struts.

There's intersections here...but it's just an illustration, someone will have to do cleanups.

Ig you define the pscale attritube and set a decent value for the collision iteration, you should solve most if not all interesection problems.

If not, the detangle

Vincent Thomas   (VFX and Art since 1998, avialbe in October)
Senior Env and Lighting  artist & Houdini generalist & Creative Concepts

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my rope is gonna get compressed and it is going to be following the ship moving, which is why I used attach to geometry.

I was using the setting below but it is still stretches a lot, with just wind velocity 10, substep 10, constraint iterations on 1000.

I wonder if more constraint iterations is the only to go if i want it to stretch less.

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Hi,

I would like to know if there is a way to animate de pscale attribute during the simulation.

If I do so, the lenght of the rope is scaling up, but I'm wandering if there is a work around.

Thanks

Charly

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