Lookup and Filter Data with native nodes

Hi,

Sometimes I see some projects using the lookup and filter data nodes on the output of some other native Nodebox nodes such as using the lookup on the output of a point node to get the x of the point. Is there any way for me to know which items can be filtered or parsed in the output of a node?

Thanks

Guilherme,

Yes, there is!

Use the Keys node. Hook the output of any native Nodebox node to the Keys node. It will produce a list of all they keys that you can look up. Some keys will be internal Nodebox things (e.g. class) that you can't use, but the rest will be fine.

A special key is "bounds". If you look up the bounds of a rect you will get a 4-tuple, something like "Rect(-50.0, -50.0, 100, 100). The first two values are the x and y of the shape's top left corner; the other two values are its width and height. You can retrieve any of these four values in a single bound by using dot notation:

bounds.x = top left x
bounds.y - top left y
bounds.width = width
bounds.height = height

The Keys node is one of my secret weapons. I use it all the time to find these hidden gems.

Enjoy!

John

Thanks John!