Seems like Houdini is heavy on nodes and expressions to create your work. How much custom plugin development do you have to do with Houdini compared to Softimage, Maya, etc...? Let's define a plugin as something you'd write as a script or C++ lib that gets included in the software as a reusable tool, perhaps providing it's own GUI front end (if applicable) and is responsible enough to do proper error checking (as opposed to a couple line hack script like many artists do).
Is there much of an SDK for writing GUI's as front ends for tools? Matt
