bunker

The particleFluidSurface is an OTL, you can have a look inside to see where the issue is.

I would suggest some basic Nuke for FX slapcomps at least. Also some keying and roto knowledge can come handy for garbage mattes.

you can create a shelf tool and set a keyboard shortcut auto = hou.updateMode.AutoUpdate manual = hou.updateMode.Manual if hou.updateModeSetting()==auto: hou.setUpdateMode(manual) else: hou.setUpdateMode(auto)

You need a VDBfromPolygon node instead of "convert" or use the collisionSource node if you use the Self tool / static object, you'll see how that should be setup.

I've been a bit too busy to work on Part2 just yet, but feel free to ask questions here.

You can try breaking your cloth into clusters using nearest points (like you would do with a simple voronoi fracture) edge_tears_2.hipnc

The logic doesn't work: nearpoints() will give you point numbers from the second input, they have nothing to do with the first input point numbers. Here are 2 simple ways of doing what you want, just testing if you get at least one point within a search radius. // 1) nearpoint int pt = nearpoint(1,@P,chf("maxDist")); if(pt!=-1)@Cd={1,0,0}; // 2) pointcloud if(pcnumfound(pcopen(1,"P",@P,chf("maxDist"),1))>0)@Cd={1,0,0};

you can use the partition SOP for that: random_groups.hiplc

You'll need to use Python for that. You should get most of it working with a few steps: - create an empty subnet - copy all the parms from the OTL to your subnet with parmTemplateGroup uiparms = sourcenode.parmTemplateGroup() destinationnode.setParmTemplateGroup(uiparms) - copy all the nodes from your OTL to your subnet with hou.copyNodesTo() - to copy the keyframes, you have parm.keyframes() and parm.setKeyframes() hope that helps

You could transfer the volume density to the grid with the attributeToVolume SOP, or volumesample() in a wrangle.

you have to use prim groups instead.

on the /geo1 object, go to the Render tab/Geometry and turn on "Render Polygon Curves As Subdivision (Mantra)"

have a look a this thread, that should help

Also don't expect FLIP to preserve volume, it just doesn't do that. The particles are added or removed based on the surface field - that's only a rough estimate and the volume loss becomes worse the more frames and/or substeps you have. This old masterclass explains some of the concepts of FLIP https://vimeo.com/15571778

there are 2 hscript functions: rbg() and hsv() if you open a textport, type: exhelp rgb