Neil Dickson

ndickson

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Particle count and quality April 23, 2018, 9:56 a.m.

You pretty much described it exactly. Fewer particles will give less detail and a less accurate simulation. More particles will give more detail and a more accurate simulation. Beyond some point, adding more particles won't make a noticeable difference in quality, and at that point, you can stop adding particles.

If the particles are being surfaced decently before rendering, as long as the fluid sim results are what you want, you probably don't need to re-sim for final rendering. (That said, I'm definitely not an expert on fluid sims; I'm just going based on second-hand information, so I could be wrong.)

HSript Expressions Master List April 23, 2018, 9:50 a.m.

There is no such list, because most of them (like $PR) are “local variables”, in that they only apply to specific paramaters on specific nodes, and many have parameter-specific meaning, so they're described on the help pages for those nodes. We're also trying to slowly phase them out from critical places over time, because they effectively make decent performance impossible.

That said, a list of global HScript expression variables can be found here: http://www.sidefx.com/docs/houdini/network/expressions.html#globals [www.sidefx.com] Global variables are less problematic than local variables.

render scene is entirely black April 20, 2018, 11:46 a.m.

Looks like it's missing an FBX file. Can you post fbx.FBX?