Andi Farhall
Andi Farhall
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Local variables, driving parameters and documentation June 11, 2022, 6:17 a.m.
9 times out of 10 the answer to my questions have been pointed out in the documentation. However...
Quite often I want drive a parameter with an attribute, good example being painting a point attribute to drive the height on a mountain sop, which you can do by naming the incoming point attribute @height. It isn't mentioned in the docs at all as far as I can see but why this works becomes clear if you dive inside the mountain sop attribvop and find a bind that imports @height, and I can also see all the other things that are bound in which is helpful.
Now I want to drive the wire radius on a polywire sop, again nothing in the docs in mere mortal language, but some forum searching and ah! I can just stick an @myfloatval in the wire radius channel.
Is all this information in the docs in a way I just can't see? Do I just need to rtfm properly?
Yes I can see this on the polywire sheet:
The four numerical parameters support all the local variables of the Point operation, plus the LSYSTEM specific variables of $WIDTH, $SEGS, $DIV, $LAGE, $GEN, and $ARC.
To some degree it's gobbledegook, and I see more than 4 numerical parameters so which 4 does it mean, and my only experience of local variables is in wrangles where I can see how to tie them to incoming point attributes.
I really want to learn but I feel like I'm staggering around in the fog!
Quite often I want drive a parameter with an attribute, good example being painting a point attribute to drive the height on a mountain sop, which you can do by naming the incoming point attribute @height. It isn't mentioned in the docs at all as far as I can see but why this works becomes clear if you dive inside the mountain sop attribvop and find a bind that imports @height, and I can also see all the other things that are bound in which is helpful.
Now I want to drive the wire radius on a polywire sop, again nothing in the docs in mere mortal language, but some forum searching and ah! I can just stick an @myfloatval in the wire radius channel.
Is all this information in the docs in a way I just can't see? Do I just need to rtfm properly?
Yes I can see this on the polywire sheet:
The four numerical parameters support all the local variables of the Point operation, plus the LSYSTEM specific variables of $WIDTH, $SEGS, $DIV, $LAGE, $GEN, and $ARC.
To some degree it's gobbledegook, and I see more than 4 numerical parameters so which 4 does it mean, and my only experience of local variables is in wrangles where I can see how to tie them to incoming point attributes.
I really want to learn but I feel like I'm staggering around in the fog!
Masking forces in dops May 7, 2022, 5:03 a.m.
Hi Tomas,
I used a sop solver to group some points and set the mask attr, then under the pop wind used the multiply wrangle, works a treat. Much to experiment with still.
cheers,
A.
I used a sop solver to group some points and set the mask attr, then under the pop wind used the multiply wrangle, works a treat. Much to experiment with still.
cheers,
A.
Masking forces in dops May 6, 2022, 12:26 p.m.
Hi,
I'm trying to get more art direction into some flip sims and I want to mask or blend off the effects of things like gravity, pop forces etc. I've managed to hook up mask field to a sop sdf to affect gravity, but things like pop wind won't work in that instance.
I tried a solver sop multiplying the popwind amplitude by the length of the velocity and again it does something but I've not found a way of visualizing exactly what that's doing.
Any suggestions as to how people localise forces or effects in dops, or visualise those things would be cool.
cheers,
A.
I'm trying to get more art direction into some flip sims and I want to mask or blend off the effects of things like gravity, pop forces etc. I've managed to hook up mask field to a sop sdf to affect gravity, but things like pop wind won't work in that instance.
I tried a solver sop multiplying the popwind amplitude by the length of the velocity and again it does something but I've not found a way of visualizing exactly what that's doing.
Any suggestions as to how people localise forces or effects in dops, or visualise those things would be cool.
cheers,
A.