topic Re: how can i make the water wheel move along with a particle? in Maya Forum

how can i make the water wheel move along with a particle?

Anonymous — Thu, 14 Dec 2017 23:02:20 GMT

i made a water wheel with a particle and want the water wheel to be moving under the particle. i need a nconstraint but i wonder which one. do i use transform?

Re: how can i make the water wheel move along with a particle?

Roland.Reyer — Fri, 15 Dec 2017 09:11:42 GMT

Hi,

turn the water wheel into an nCloth and use a preset to make it solid (e.g. solidRubber).

My water wheel was made from a cylinder so that I can use the center vertices for the transform constraint.

The transform constraint still has some flexibility which doesn't matter once the animation plays.

Re: how can i make the water wheel move along with a particle?

Anonymous — Fri, 15 Dec 2017 09:32:29 GMT

Thank you. I did but now im running a different problem 😕

besides its very slow. How can i solve this problem?

Re: how can i make the water wheel move along with a particle?

Roland.Reyer — Fri, 15 Dec 2017 10:11:09 GMT

The wheel needs to be ONE piece before you convert it to an nCloth, otherwise all pieces become independent objects. Combine should do it.

For the transform constraint select only the two vertices that are the axle of the wheel.

Re: how can i make the water wheel move along with a particle?

Anonymous — Fri, 15 Dec 2017 10:48:14 GMT

so i first combine the whole wheel and then i transform constraint only the the two vertices that are the axle of the wheel.

Re: how can i make the water wheel move along with a particle?

Anonymous — Fri, 15 Dec 2017 10:52:37 GMT

i did those steps but the simulation is very slow tho... why is it so slow?

Re: how can i make the water wheel move along with a particle?

Roland.Reyer — Fri, 15 Dec 2017 11:01:24 GMT

How slow is your simulation?

Mine is ~20fps, not so bad.

Try a very simple test scene to find out you need and what not.

Re: how can i make the water wheel move along with a particle?

Anonymous — Fri, 15 Dec 2017 11:50:22 GMT

its very slow. its so slow that i cant run the simulation. any idea how i can change that?

Re: how can i make the water wheel move along with a particle?

mspeer — Fri, 15 Dec 2017 12:10:13 GMT

Hi!

1. Using non-ASCII characters or whitespace in any folder name / file path, also as user/account name is not a good idea for Maya and some other applications. So please change file name to something like "s_muehlenrad_2".

2. Open Outliner, there are a lot of rigid solvers. You may use an earlier version of the scene, or remove them (maybe delete history first).

Re: how can i make the water wheel move along with a particle?

Roland.Reyer — Fri, 15 Dec 2017 12:10:38 GMT

Yes, I see.

1. In your scene there is still a lot of dynamics stuff that is not needed. Clean up your scene, delete everything but the water wheel geometry.

2. The water wheel is way too complex. There are 17 planes around the wheel, each with 100 faces that are not needed. If you simplify that your simulation will run much faster.

Then start from a clean scene.

Turn the wheel into an nCloth, apply the solidRubber preset.

Select only two (!) vertices on the axle for the transform constraint

Make the nParticle emitter.

Keep it simple so that you can see what affects what.

Re: how can i make the water wheel move along with a particle?

Anonymous — Fri, 15 Dec 2017 12:27:59 GMT

so my water wheel is too big, right? uhm when i combine it, i cant chose only two vertices 😕

first ill try out with a smaller water wheel and let me delete those 100 faces you said. btw what do you mean by that?

Re: how can i make the water wheel move along with a particle?

Roland.Reyer — Fri, 15 Dec 2017 12:47:06 GMT

Look, all these planes would work the same with just 1 facet.

Go into the settings of the polyplane to set the subdivisions to 1.

These are the two vertices that you should select for the transform constraint:

That will make sure that the wheel can rotate.

Re: how can i make the water wheel move along with a particle?

Anonymous — Fri, 15 Dec 2017 13:09:28 GMT

great, ill do that! but uhm... when i combine the wheel and put an ncloth on it, i cant chose only those 2 things. ive to chose the whole object 😕

Re: how can i make the water wheel move along with a particle?

Roland.Reyer — Fri, 15 Dec 2017 13:15:39 GMT

First you do nCloth->Create nCloth (and apply the preset in the Attribute Editor).

Then you select those two vertices and go nConstraint->Transform Constraint.

http://help.autodesk.com/view/MAYAUL/2018/ENU//?guid=GUID-6FB65F16-528E-40F5-89D6-508CF654C547

Re: how can i make the water wheel move along with a particle?

Anonymous — Fri, 15 Dec 2017 13:36:57 GMT

so far so good. with the way smaller object the simulation works way better BUT for some reason i can make the water wheel an active rigid body

// Error: line 0: A NURBS or polygonal surface must be selected to create a rigid body.

i selected the water wheel and this is what maya tells me

Re: how can i make the water wheel move along with a particle?

mspeer — Fri, 15 Dec 2017 14:07:38 GMT

Hi!

Why create an Active Rigid Body?

Re: how can i make the water wheel move along with a particle?

Anonymous — Fri, 15 Dec 2017 14:08:27 GMT

because my wheel is keep falling down off the scene

Re: how can i make the water wheel move along with a particle?

mspeer — Fri, 15 Dec 2017 14:12:25 GMT

Hi!

It can't, if you fixed the wheel with nConstraint -> Transform Constraint as @Roland.Reyer suggested.

Re: how can i make the water wheel move along with a particle?

Anonymous — Fri, 15 Dec 2017 14:13:24 GMT

thats the new one

Re: how can i make the water wheel move along with a particle?

Anonymous — Fri, 15 Dec 2017 14:19:14 GMT

well it falls off the scene 😕