LightWave plugin wich allows you to set the focus point and the near focus plane in any view interactively
It also visualise the near and far planes in any view except camera (I've tested it, its far better to use lw's own
opengl preview function for this)

Usage
Once activated (its recommended to select the camera, but its not needed)
you can left click in any view to set the focus point for the current active camera.
Use right click to set the near focus plane.
If you do have either the Focus Distance or the FStop controlled by an envelope, the tool will add additional keys to it. It does not actively create the envelope for you by purpose.

Installation:
- Simply add the plugin.
- Since its a tool plugin it does not appear in the additional tab.
Open the Edit Menu Layout window and search for tibe3_FocusTool
under Tools. Click and drag it to a position where you can use it

Old text for legacy purposes follows

The idea is based on this feature request:
http://forums.newtek.com/showthread.php?36158-A-lazer-beam-that-shoots-out-of-the-camera/

I never understood whats so funny about the request. In fact I do think think that this is the kind of
out of the box thinking wich might speedup the workflow.
Since I always wanted to try out the new raycast function in lw, I thought it was a good time to revisit this project.

So here it is, the focus tool. It can be found under tool not plugin in the menu editor.
Its recommended to switch to camera selection before activating the tool, but its not needed.
If you are outside the camera view, you will see 3 circles around your camera



The blue filled circle is the near focus distance. Everything between this and the pink outher circle (far focus distance) will be sharp
The dark red line is the focal distance.
If you are in camera view you can click on any surface and the tool will set the focus distance accordingly.
To quit the tool switch to move rotate etc. (Hit T)
If the far focus distance is bigger than the hyperfocal distance it will vanish.

Now this is a prototype, there are a few things I could expand upon if wished, I'm not even sure if the calculations of near and far focus are correct, but anyway here's the list of things I would like to add if there is enough interest in a 8 dollar plugin: