Справка Houdini на русском Shelf tools Grains tab

Granular Strand shelf tool

Fills grains along the edges of polygons, creating a beaded wire effect.

Note

This tool is a technical demo of alternate uses for the POP Grains tool.

This tool fills grains along the edges of polygons, creating a beaded wire effect. Similar to the Granular Sheet tool, the particles are densely packed to give some bend resistance. The particles are evenly spaced and very tightly constrained. This could be used for creating things like stacked necklaces, nets, or chains.

This tool can be thought of as a simple wire solver. It results in wire-like behavior because there are no collisions between particles since they are all right next to each other and constrained. An advantage of using this tool for simple strand simulations is that it’s very stable and faster in certain instances.

Tip

To pin a PBD simulation, make sure you set the mass of the particles to 0.

Using Granular Strand

Select the object to convert to a Granular Strand.
Click the Granular Strand tool on the Grains tab.

For specific parameter information, see the POP Grains help.

Note

There is no twist when using this tool, unlike the wire solver can do with hair.

Grains tab

Dry Sand

Creates a grain object from a piece of geometry.

Wet Sand

Creates a grain object from a piece of geometry, with a clumpy wet look.

Sand Box

Creates a patch of sand with a collision object which contains the sand.

RBD Grains

Fills an object with spheres and uses the Bullet solver to drive them.

Upres Sand

Takes each particle from your original simulation and replaces it with a cluster of new ones.

Granular Solid

Fills an object loosely with grains and creates constraints to hold it together into one object.

Granular Sheet

Fills the surface of an object with densely packed grains and makes constraints to hold them together.

Granular Strand

Fills grains along the edges of polygons, creating a beaded wire effect.

Auto-Sleep Particles

Allows grains to wake up and go to sleep based on the velocity of nearby particles.

Awaken By Geometry

Activates particles near animated geometry.

Slice

Slices a particle fluid across an arbitrary plane for distribution to a simulation farm.

Slice along line

Slices a particle fluid using a set number of slicing planes evenly spaced along a certain direction.

Distribute

This tool sets up the networks of a simulated object so that it can be solved in parallel on multiple machines using HQueue.