procedural modeling / python : fern generator

since i couldn’t find any fern-type plants in my libraries, i built a procedural one in houdini.

because i used a lot of pretty similar expressions during development i decided to switch to python, storing everything in a couple of functions.

features :

  • easy control for length, density, color, bend angles, stiffness etc etc.
  • custom leaf geometry
  • preview mode for faster interaction

procedural modeling : stadium crowd – source object generator


crowd tools need a source geometry to place agents.

especially in a stadium you want to place these agents on very precise positions.

to be flexible regarding the density of your crowd,

i built a procedural source object generator in houdini.

what it does:

  • automatic distribution of “seats” evenly on splines, doesn’t matter if they are sampled evenly or not
  • aligning the seats, so that they are facing towards the field
  • providing control over seat size, spacing and insets for stairs and gangways