steam of coffee

[ghiom3d]

here is the file : http://www.ghiom.com/temp/Untitled03.max

Win7x64
3DSMAX 2014x64
PhoenixFD 2.2.0 rev: 24510

thanks for your help

[ghiom3d]

Hello ,

I have create a new simulation , only Phoenix FD particles with 3DSMAX wind to add a little turbulance wind and phoenix turbulance to add turbulances aver altitude.


it's looking nice.
i discover the export to PRT option on the right click. damn ! why it is not in the phoenix simulator parameters ?

So i export the PRT sequence and use Krakatoa to load with PRT loader.
I add a little noise to create 10 partitions.

Now, i don't know how to make my particle transparente at the birth and the before the death . Phoenix FD not export Ages values ..

I switch back to vray and trying the krakatoa atmospheric tool .

that's too bad ..

[Ivaylo Katev]

the age is not exported? are you sure that it is checked in the source that creates the particles?
if really the age is available in the cache file but is not present in the prt file, you can use the foam shader in point mode to render the particles, use the PA button, it will make the size animation to use particle age instead the general time.
unfortunately we do not have partitioning, but you just can create 50M particles, they are simulated very fast and the only that you need is disk space, ensure that you have 1TB free HDD space. at least the partitioning does not produce the same quality as the natural particles.

[ghiom3d]

Thanks, your help is very kinds !

I've try to render like your advice. with the foam Shader . It's very nice and near of the result i want !


But i don't find how to create a sort of curve parameter for the size or density of the particles.
I need the particles invisible at the First frames ( near of the coffe ) to hide where they are emmited.
then progressively they must appear and higher i need to make thoose particle disappear


is it possible to render krakatoa PRT loader with PHXFoam ?

[Ivaylo Katev]

you have to use the size multiplier parameter. in the point shader the size is related to the alpha. animate the size multiplier and push the button PA
about the prt rendering with the foam shader, yes it is possible
we have a prt object in the helper section. if you have krakatoa, you can use its prt loader, what you prefer. the loader of krakatoa have more options, our is a simple one.

[ghiom3d]

I was thinking that The size multiplier acting as opacity parameter in relationship to the timeline , not the age of each particle like the Age test of particle flow .
Good point about PRT Object , i haven't seen it . Is it possible to using magmaflow on PRT to modifying Colors over particle age with PHXFOAM ?

Now it's look closer than what i'm need to do .

But i have too much little details in the steam wich make it look like a cigarette smoke .
If i lower the celle number of the simulation by making the cells bigger, can i expect a more sweet smoke line ?

* this is a really great piece of software !! i 'm falling in love ... and what a great help !!

[Ivaylo Katev]

I was thinking that The size multiplier acting as opacity parameter in relationship to the timeline , not the age of each particle

the PA button switches between timeline/particle age, PA is actually abbreviation of particle age.

But i have too much little details in the steam wich make it look like a cigarette smoke .
If i lower the celle number of the simulation by making the cells bigger, can i expect a more sweet smoke line ?

well, you are the first one asking for less details!
the cell size will not work, but you can try to change the rendering mode from point to fog. the fog mode stores the particles into a grid and uses the smoke shader. beware of the grid parameters, you can easily overload the ram if the cell is too small.

[tsetso]

Is it possible to using magmaflow on PRT to modifying Colors over particle age with PHXFOAM ?[/I]

To modify the colors over age, you'll have to simulate with the "Export age" checkbox, turned on (it is located in the PHXSource).
Once the simulation is completed, export the phoenix particles to a .prt format (right click the simulator - "Phoenix FD Export Particles").
Then you load these particles again using the PRTLoader and add the magma modifier.

[ghiom3d]

hello again,

i need a little explanation about how to change the size over age with Size multiplier and the PA option .

My PHXsource is brush / 3300 particles / type Drag / lifespan 60 / export ID and Export age .
I calculate the simulation ..
then i set up my PHXFoam : refractive index 1.148 / size multiplier PA / mode point

i go to the curve editor and add 4 key in the time line.
Frame O value 0
Frame 20 value 0
Frame 55 value 1
Frame 60 value 0

i don't see the evolution of the size .. it's 1 everywhere even from particle life from 0 to 20 .

[Ivaylo Katev]

i just tested it and the age export is apparently broken
the option works with PF particles but not with phoenix particles, i will fix it today and you can try with the tomorrows nightly, you have to resimulate to fix the problem

[ghiom3d]

Thanks you !! i understand now
i hope to have access to the nightly build

[Ivaylo Katev]

ask the support for the nightlies

[ghiom3d]

Fine, i will wait for tomorrow now

[Ivaylo Katev]

the bug is fixed, it's not the export, no need to resimulate.

[ghiom3d]

I will try it now thanks you Sooooooo much

... i'm sure i'm to fast. i'm must let you time to made it