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

[Anonymous]

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?

[Roland.Reyer]

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.

[Anonymous]

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

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

[Roland.Reyer]

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.

[Anonymous]

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

[Anonymous]

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

[Roland.Reyer]

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.

[Anonymous]

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

[mspeer]

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).

[Roland.Reyer]

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.

[Anonymous]

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? 

[Roland.Reyer]

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.

[Anonymous]

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 😕 

[Roland.Reyer]

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

[Anonymous]

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

[mspeer]

Hi!

Why create an Active Rigid Body?

[Anonymous]

because my wheel is keep falling down off the scene

[mspeer]

Hi!

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

[Anonymous]

thats the new one

[Anonymous]

well it falls off the scene 😕