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Technical Discussion » Smoke and color advection issue

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eetu
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vbk!!!
ps: other question about my particle to volume setup. Why dop you say my Density is done in DOP ?

The density volume sourcing is done in part_to_density Gas Particle To Field DOP, while the Cd sourcing (CdFuel) is done in volumefromattrib1 SOP.
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Technical Discussion » Smoke and color advection issue

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eetu
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Some thoughts after a quick look
- The streaking artefacts come from differing Cd and density volume extents, add Cd (and CdFuel?) to Extra Resize Fields in you Gas Resize node
- The particle to volume settings don't necessarily match between CdFuel (done in SOPs) and density (done in DOPs), so there might be some less-colored density created
- Some of the color loss might be due to opengl preview..
- The differently coloured smoke parcels will unavoidably mix as the simulation advances. You can probably mitigate that by using more substeps, and maybe by using a higher order Advection Method (HJWENO?). Remember to use the same method in your color advect node as you use in the smoke solver.

This all would need quite a bit of testing to see if it actually helps, so take it with a grain of salt
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Houdini Indie and Apprentice » Houdini Apprentice Crashing

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eetu
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Sounds like you have probably installed the VC9 build of Houdini, maybe try the VC11 build and see if it works any better?

Of course the VC9 build should work, but…
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Houdini Indie and Apprentice » containing pyro FX in geometry

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eetu
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If it's just a box, you could just use the Initial Data -> Closed Boundaries in your pyro dop object.
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Houdini Indie and Apprentice » Breaking object and pass them as particles?

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eetu
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That's pretty much what the Make Breakable shelf tool does.
Create a box and make it an rbd object, do the same with a sphere, create a ground plane, click Make Breakable and select the box, give the sphere some initial velocity so that it hits the box -> BOOM!

edit: Oh, and I glued the box to the ground for extra flavor
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Technical Discussion » distributing spheres on a surface without overlapping

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eetu
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Yeah, and here's another test with remesh&subdivide, to try and get a bit of that semi-regular stubby look.
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Technical Discussion » distributing spheres on a surface without overlapping

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eetu
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There are some ideas in here http://forums.odforce.net/topic/19771-tesselating-spheres/ [forums.odforce.net]
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Technical Discussion » CPU Priority for Mantra on Windows !

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eetu
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I suppose you could write a wrapper .bat with “start mantra /LOW” and pass the arguments to that, and replace the mantra command in the ROP with the mantra wrapper.

Still ugly, though - would be nice to have that ability built in, perhaps a mantra command line argument or environment variable.
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Houdini Indie and Apprentice » Strange cross displacement pattern on FLIP surface

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eetu
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Hi!

The size of the velocity volumes created in geo1/oceanevaluate1 is 10x10x10
(Volumes->Size), while the size of the whole ocean patch is 60x60. This means that it's only affecting a small area in the middle, and the cross happens because the border type is set to Streak by default. (you can verify this by diving into oceanevaluate1 and checking out the vel_volume node)
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Technical Discussion » Constraining camera to simulated geometry

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eetu
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Add a Polyframe SOP, and in the DOP Import SOP add “up” to the “N” already present in the Vector Attributes To Transform parameter.

I guess adding the Polyframe after the DOP Import would work too.
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Technical Discussion » Constraining camera to simulated geometry

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eetu
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Well, you can use rivet to parent an OBJ level node to a geo point.
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Houdini Indie and Apprentice » Font / Text SOP don't like accents ?

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eetu
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Another way is to open the edit string window (either RMB-> Expression -> Edit String or Alt+e) and click on External Editor. Here in your system's default text editor you can write your text with all the characters you need, and they should come back to Houdini just fine.
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Houdini Indie and Apprentice » Blurry cload around my emitter

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eetu
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Juzwa
Hi,

I cant find why my emitter (system created with smoke container) is actually bigger than it is.

Hey, this would be far easier to troubleshoot if you attached the troublesome .hip file.
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Houdini Indie and Apprentice » Motion Blur problem with Particles

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eetu
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Moikka, ja tervetuloa

That's funny - everything seems to be in order. If I load your hip file, go to render tab and hit render I get a motion blurred image.

The motion blur is quite extreme, so you will need to increase the sampling quite a bit to get a good looking blur..
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Work in Progress » 30 sec of randomized RnD

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eetu
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Great stuff, random r&d is where the new tricks are born
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Houdini Indie and Apprentice » Mesh dissolve effect

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eetu
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That alembic is a bit inconvenient, as the point count, order and uv change by frame - takes a bit of wrangling.
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Houdini Lounge » Licensing question (Indie)

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eetu
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Often these things are tied to the first network mac address the system sees, and if the network adapters (lan+wlan) are enumerated in a different order then that might be the culprit. It might be a long shot, but you could try disabling unneeded network hardware on both, and see if that changes the host id…
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Houdini Indie and Apprentice » Mesh dissolve effect

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eetu
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Hi!

You could sweep a circle along a curve for the fuse, and if you carve the curve before sweeping you can effectively cut the fuse at any given point.
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Houdini Indie and Apprentice » Geometry was deleted but still appears in viewer

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eetu
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A default answer, but anyway - have you tried to download a more recent build?
I used to have the same issue every now and then, earlier, but haven't seen it in a while now. Maybe a newer build, maybe a newer gpu driver, maybe I'm doing different things, maybe it's luck
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SI Users » Softimage to Houdini guides

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eetu
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Starting something like this is great, but really sticking to it is awesome.
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