Hey there,

I'm playing around with Wire Dynamics. For that I created a curve and gave every point on that curve a custom attribute (e.g. a Ratio from 0 to 1 from beginning to end of the curve)
No I would like to use that attribute in my DOPnet to modify for example the mass or elasticity . I can see that the attribute arrives properly in the DOPnet and I've tried to access it with a Point()-Expression but as I can't enter $PT as Index, I can only access the attributes values for certain Points.
I think in a Particle Simulation I would use a Pop wrangle for that but couldn't find the equivalent for Wire Sims.

Is this at all possible?

Cheers, Michael

You should just add a custom point attribute with same name for your special parameter (e.g kangular for Angular Spring Constant) , check attached project 8)

you can as well look through docs to find which attributes your object will recognize automatically
http://www.sidefx.com/docs/houdini13.0/nodes/dop/wireobject#idm47406248528416 [sidefx.com]

Thanks guys, works like a charm! Coming from ICE, I clearly have to adjust my approach and understanding of Data flow
I love the way it works in Houdini!

However, what happens when I set the values in both networks? Are they multiplied?
I can see, that something is happening, but the details view doesn't show anything changing or at least I can't find it ops:

as written on the page I've sent you many attributes serve as scaling factors for the parms on wire objects

by each attribute you have if it's a scaling factor or not
if it is, it multiplies the parm on Wire DOP object, if not it sets the absolute value (like fexternal, v, angvel, etc…)

EDIT: just be aware that the values are combined by the solver, so you'll not get combined value in the details view

Damn…I guess I should learn to read before asking to many questions…Sorry for the noise ops:

And thanks again!

Hi,

Can anyone help me get the width attribute form an l-systems tree into the wire solver?

The wire object seems to show that it has a width attribute, but it had a value of zero.

I want to feed the width value from the l-system into the width field on the wire object.

Is this even possible?

Many thanks if you can help me.

as I described above, look at the page and see that width is a scaling factor to Width attribute on Wire Object
so just set that attribute to 1 and the wire will have exactly the same width as defined by your attribute