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data3d
06-20-2015, 07:18 AM
What is the best method / layout tool to move a belt around a pulley system? (as noted in the image I have attached). I actually would prefer to move the belt rather than animate a UV map on the belt, so I hope that is possible without too much additional complexity. I have looked at the Animated Track tutorials, but that seems just a bit different. Any advice or links to tutorials would be appreciated.

Thanks,

Data3D

128659

lertola2
06-20-2015, 07:46 AM
This seems like the perfect job for spline control.
https://www.lightwave3d.com/learn/article/siggraph-2013-lightwave-116-spline-control-live-demo/

jeric_synergy
06-20-2015, 08:34 AM
With such a featureless belt, how are viewer going to know it's moving?

data3d
06-20-2015, 08:52 AM
The final belt will be thicker and have some cross cuts on the underside, which would be more or less visible as the belt slows down and stops, versus when it is running at engine speed.

spherical
06-20-2015, 04:06 PM
And there's writing and usually a label on the outer side that would be seen every revolution.

erikals
06-24-2015, 08:14 AM
...SplineControl indeed... http://erikalstad.com/backup/misc.php_files/smile.gif
11-6_content\ Scenes\ SplineControl\ 02_Examples\ TreadSolution.lws



https://www.youtube.com/watch?v=BIBF0wNliiY

edit aw, what the heck, attached the LW 11.6 Content Tank Thread example files >

jeric_synergy
04-19-2016, 06:05 PM
Having just wrestled with Spline Control (and winning!) I was wondering about this project. Discrete items like bulldozer treads or conveyor belts w/separate "trays" are perfect for instanced SC, but a continuous BELT as here in the OP's post is a bit different. I'm assuming s/he went with bones moved by SC, but would like to know.

For something like this I think a looping/scrolling UV animation would be more straightforward. Stick a bone in to add some belt bouncing and call it a day.

erikals
04-20-2016, 12:56 AM
could be that Bullet SoftBody also would pull it off... might be worth a test...

i remember Dodgy did something similar with ClothFX...

ah, there we go... http://erikalstad.com/backup/misc.php_files/smile.gif


https://www.youtube.com/watch?v=Joni3mn8M3s

jeric_synergy
04-20-2016, 01:14 AM
Perfect example, except I have no idea how he got it to go 'round. <:^( :D

(Nice find!)
+++
SC is pretty fun: I don't remember anyone demo'ing a situation where the spline nodes are especially animated. I don't have an application for that, BUT here's what that would look like:

133498

Well, no conveyor belt animation, that is..... :o

gerry_g
04-20-2016, 02:58 AM
those belts are usually really really tight, I'd say to hell with it and just animate the texture, could always add a morph to show some vibration driven by a noise value, I just wouldn't put myself through the grief

jeric_synergy
04-20-2016, 08:27 AM
those belts are usually really really tight, I'd say to hell with it and just animate the texture, could always add a morph to show some vibration driven by a noise value, I just wouldn't put myself through the grief
Exactly, but I'd still like to know how Dodgy pulled that one off. (#8) Would look great for some steampunky contraption.

Maybe this: http://forums.newtek.com/showthread.php?109271-Cloth-FX-settings-for-a-cable&p=1021625&viewfull=1#post1021625

So, ClothFX. I surprised Mike got it to replicate physics so well, he da man.

erikals
04-20-2016, 09:49 AM
forgot, yes, i think those are the files you need.

http://erikalstad.com/emoti/obiwan.jpg

jeric_synergy
04-20-2016, 10:12 AM
Yes. --It works because Mike is very very good. (ClothFX & HardLink.)