Hi all, I am the creator of Shadow Multi Cast a program that plugs inside AutoCAD to create 2D shadowlines in your drawings. It is fast, and I am currently working on versions for LT users too. The software can be purchased for most areas of Australia and is compatible with AutoCAD 2000 - 2012.
I am also creating clear transparancies that can be overlaid on drawings to check shadow lengths.
For more information, go to my website www.shadow-diagrams.com