Resent VR project needed some rocky portal transitions from one location to another.
The beginning and he end of movement should be matched with 360 camera movement, attached to the quadrocopter.
That's how portal and camera animation looks like:
The idea was to create dozens of portals following real camera movements.
So some spline driven parametrical asset was needed.
Some Houdini customizable setup with node tree came at last:
And some particle simulations on the ends of portals:
