# cloudfx

Member Since 07 Dec 2007
Offline Last Active Feb 28 2013 12:33 PM

### In Topic: sorting point problem

04 February 2013 - 11:32 AM

tjeeds, on 04 February 2013 - 11:25 AM, said:

I believe you'll need curve, not just the points. Then you can sort by vertex number. Are you saying you can't get at that curve?

The problem is there is no curve.
If I use Add sop to do Polygon, due to the random point number, its going to create random spiky curve.

### In Topic: How would you add an object velocity into a fluid velocity?

10 December 2012 - 01:53 PM

anim, on 04 December 2012 - 05:11 PM, said:

it's much faster to use Gas Particle To Field DOP if you just want to transfer velocity from points like that
or Field Force DOP to make it act as a force since you are adding it anyway instead of just blending/replacing

but in general anything that can modify fields can change velocity, there is plenty of nodes/methods for that, it really depends on usage, use simple and fast ones like Gas Linear Combination, Gas Calculate, Gas Particle To Field for basic transfer and calculations and more expensive ones like Gas Field VOP and Sop Solver for more complex math

on top of that very quick way is to just check use point/volume/rigid velocity for colisions/sources directly on smoke solver which will take care of basic velocity transfer from them

Yes, but Gas Particle TO Field needs decent amount of particle in some case which it does not reach to the voxel that it have to do the calculation for vel or whatever field. You can increase the radius of search but sometimes, vector type volume convert from less point amount and use it in Gas Field VOP for more complex calculation or Gas Caculate or Linear Combination for simple calculation would do the job faster.

In some cases, sim with lots of voxel data compare to the scene scale, large amount of particle may take the sim really slow.

What my question was mainly about not technically getting the vel data to dop vel but what kind of method out there for object velocity implementation for emit source but thanks all for attention!

### In Topic: How would you add an object velocity into a fluid velocity?

04 December 2012 - 01:43 PM

woodenduck, on 04 December 2012 - 08:25 AM, said:

Sop vector feild dop.
That is what I was suggesting from the top. I want to see how the other people use object's velocity added to their fluid vel.

### In Topic: ramp parameter with subnet not working

10 October 2012 - 06:40 PM

I tried drag and drop, copy&ref , or in the "Type property of the node and drag from "from nodes" but still not working.

Anyone has any idea?
for the opmultiparm hscript, where do I put the expression? (any more info to follow for this manual method even?)

### In Topic: ramp parameter with subnet not working

08 October 2012 - 06:25 PM

edward, on 06 October 2012 - 03:57 PM, said:

Just do the drag and drop thing

Drag and Drop is still not referencing correctly.

I guess I will have to dig into the links.