volumetric render questions

[Ungoliant]

hello everyone, my questions its about a volumetric render in houdini

1

[anamous]

You know, there's about a million ways to do this kind of thing in Houdini, and that's a conservative estimate... But probably the easiest is to copy metaballs onto your particles, set the parameter "render metaballs as volumes", and attach a volume shader to the object - see the sample hip file.

cheers,

Abdelkareem

simplevolume.hip

[Ungoliant]

thanks anamous, i

[Guest xionmark]

2

[Ungoliant]

Hi xionmark thank

particle_flowtest.hipnc

meteoro0100014.rar

[Guest xionmark]

Hi xionmark thank

[Ungoliant]

hi mark thanks for the fast reply, the only way for export particles to 3ds max, its with this plugin, i want to do volumetric render, but the particles when i import dont have age and velocity, perhaps its the 3ds max rf import plugin.

how can i use the dump_rf_part?

[Guest xionmark]

hi mark thanks for the fast reply, the only way for export particles to 3ds max, its with this plugin, i want to do volumetric render, but the particles when i import dont have age and velocity, perhaps its the 3ds max rf import plugin.

how can i use the dump_rf_part?

The problem is that there's no "age" attribute in your HIP file. One way to solve that would be to add an Attribute Create SOP, name that attribute age, set the value to $LIFE, then write out the Real Flow particles again.

To use dump_rf_part, open a shell (I assume you're on Windows from your HIP file, so you can use CygWIN or I suppose the DOS shell) and simply run the dump_rf_part utility on the RF particle file.

Example:

[mstory@mercury ~/tmp]$ dump_rf_part meteor_00001.bin | grep age
particle age:           0.000000
particle age:           0.000000
particle age:           0.000000
particle age:           0.000000
particle age:           0.000000
[mstory@mercury ~/tmp]$
[mstory@mercury ~/tmp]$
[mstory@mercury ~/tmp]$
[mstory@mercury ~/tmp]$ dump_rf_part meteor_00002.bin | grep age
particle age:           0.000417
particle age:           0.000417
particle age:           0.000417
particle age:           0.000417
particle age:           0.000417
particle age:           0.000000
particle age:           0.000000
particle age:           0.000000
particle age:           0.000000
[mstory@mercury ~/tmp]$
[mstory@mercury ~/tmp]$
[mstory@mercury ~/tmp]$ dump_rf_part meteor_00003.bin | grep age
particle age:           0.000833
particle age:           0.000833
particle age:           0.000833
particle age:           0.000833
particle age:           0.000833
particle age:           0.000417
particle age:           0.000417
particle age:           0.000417
particle age:           0.000417
particle age:           0.000000
particle age:           0.000000
particle age:           0.000000
particle age:           0.000000

Mark

[Ungoliant]

thanks a lot xionmark, woks great now, now i have a pipeline houdini> max, haha, i