You use the script with any of the drawing tools with their drying options set to off. I suggest the mechanical pencil with anti-aliasing on.
Once the script is active, just click were you want the vanishing point, and drag out a circle.
The radius of the circle defines the number of lines that will be drawn and how densely their centers will be packed together.
Here are a few images to show what is possible.
For downloard http://www.kylerkellyanimation.com/clie ... ective.grg
![Image](http://1.bp.blogspot.com/-Qj9-asClmRg/T_w2Jr4s9AI/AAAAAAAATh4/uJmZ53SRvRc/s320/PerspectiveScript00007.png)