MASH Random node and nparticles

[Anonymous]

Hello ,

I have a question about combining MASH's nodes with nparticles . 

I set up a MASH network for a simple sphere . I then choose MASH>>Utilities>>set up nparticles with an initial state from MASH , to create nparticles at the position of the MASH spheres . Until now it works fine . But when I create a MASH random node and give randomness to the positions of the spheres , the nparticles positions don't follow the positions of the spheres , they stay in their initial state . Is there a way i could make the particles follow the MASH network objects after adding a MASH random position? 

I added a screenshot to make my question clearer . It shows different positions of the particles and the MASH's Spheres after adding the MASH random node .  

[mspeer]

Hi!

A) Create the particles after finished set up of the MASH network, or

B) Go to frame 2.

New position data is only evaluated after particle Start Frame (not sure if this is a limitation on how this works, but it looks so because it's an initial state that's set at the moment when using the command).

You can also report this problem (bug?) to Autodesk.
Help -> Speak Back -> Report a Problem

[Anonymous]

Thank you but it still doesn’t work .. I’ll probably report this issue as a bug or to find a way to fix this problem. Thanks 🙂

[mspeer]

Hi!

Please upload a scene-file (cause here it works).

[Anonymous]

I uploaded 2 Scene files and playblast video file to help demonstrate my problem Phase 1Phase 2 - Here is the problem .

[mspeer]

Hi!

OK now i understand the problem.

You cannot create particle positions based on MASH points and MASH points based on (the same) particle points at the same time, that's not possible.

(One or the other)

Use one particle system as input and a different particle system for output.

(Why connecting the output particles as input?)

[Anonymous]

If you could connect the output particles as input, you can then use both particle attributes ( Collisions, dynamic properties such as conserve, goals, etc that you are used to using nparticles), as well as using the MASH waiter nodes and adding things like orient and random nodes, all at the same time. This seems to work except only when adding a MASH random node and changing the position sliders.

[mspeer · Accepted solution]

Hi!

You can't simply mix this.

There is an order:

Particles1 (including Dynamics/FX) -> MASH (-> Particles2)

You may achieve what you want by using "only" MASH Dynamics, "only" particles with instancing, or by using multiple particle and MASH networks.