Skybar
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add voxel padding to vdb, what's the equivalent of volumeresize for vdb?
Skybar replied to karen's topic in General Houdini Questions
VDB Activate -> Expand -
It's because the ramp is a float. You are saying that vector = float. If you skip the ramp and do vector hillProb = rand(seed+2); you will get a random vector.
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Any idea why? FLIP Sim losing cache in memory when scrubbing?
Skybar replied to HM_2020's topic in Effects
You mean you are flipbooking while simming? You could try the "Leave Playbar at Last Frame" on the flipbook options. -
Separate rigid from soft body point deforming pieces (in alembic cache)
Skybar replied to haki's topic in Animation & Rigging
Try the Extract Transform SOP. -
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There is a preset on the point wrangle to grab second input attribute by id:
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It's actually an eighth of that, around 200 million voxels. Keep in mind the resolution of the volumes is particle separation * gridscale.
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Set the "Missing Frame" option to No Geometry on the file cache.
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I gave it a try, might not work on more complex geo but it works on your box . I find the unconnected points based on normals, and then put those points into the original primitives and rebuild them. I did something similar a while ago where I had lots of curves making up a tree. The branches wasn't attached to the branch before it, so I needed to find a way to connect the base point of a curve into the middle of another curve where there wasn't a point to attach to. That was curves and this is not, but it seems to work well for this too, albeit I turn the polygons to curves and then back to polygons. dv_CrackedEdge.hipnc
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Instead of setpointgroup you can: i@group_groupname = 1;
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move 3D positions but keep screen positions.
Skybar replied to Spyrogif's topic in General Houdini Questions
Move in Z from camera: vector campos = point(1, "P", 0); vector dir = normalize(@P-campos); @P += dir*ch("amp"); -
rand(stamp("../copy1","id",0)+0,47) You made mistake here. It should be 0.47 with a dot, not comma.
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What kind of primitives does the alembic contain? I've had problems with crashing alembics before if the animators include the animation controls by mistake. If you can, try and load different parts (under the Selection tab on the Alembic SOP) and try and find what makes it crash.
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Depending on what you are doing and how your geo looks like, you can also abuse compiled foreach loops to multithread otherwise single-threaded stuff.
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Ah nice catch! I haven't used the new sourcing system that much and didn't know about this. In the old Source Volume DOP you could use only "vel" fine even if it was consisting of .xyz scalar volumes. With the new Volume Source DOP however, it is as you describe.
