Houdini Constraints
Gyroscope Example
This is a project I did in order to learn the basics of constraints in Houdini. I learned a lot from the creations of Richard Lord here and here.
One place I got tripped up on was figuring out how to do an angular motor on the Y axis. As soon as I changed axis 1 to [0,1,0] the geo connected to it would disappear. It turns out that by default Axis 2 is set to [0,1,0]. Even though it’s grayed out, the solver still uses that value somehow. To fix this, temporarily change the number of motors to 2, change the vector to a different direction, and drop the motors back down to one again.
