How to control when a plugin is being updated?

[Neo]

Hello Houdini Jedi Masters,

In my experience, one of the redundant issue that is difficult to grasp while developing plugins for 3d packages is how to control the WHEN the custom plugin is being updated. Houdini is no exception so far and I'm determined to demystified its secrets.

For simplicity sake:

The plugin needs to be updated as the scene timeline change its position, either manually or while the scene is being rendered. Since the plugin only care about the objects transformations, it uses a OBJ_Geometry operator. The problem is, cookMyObj() is only updated once at the node creation.

So, my question is, how can the plugin be updated based on the frame position?

Edited June 4, 2012 by Neo

[graham]

You need to make your object time dependent. I can't recall what the call is to do that off the top of my head, but if you look around you should have no trouble finding it.

[Neo]

Good Hint Master,

I'll look into this!

Thank you!

[Guest xionmark]

I think you might want to try:

OP_Node::flags().timeDep = 1;

[edward]

flags().setTimeDep(true) inside your cookMyObj()

[Neo]

Beautifully, the trick it does!

May the force be with you!