smart draw line (pathfinding)

How to do this ...

I have to make a method that will draw a polyline from point to point, but the line needs to find a shortest path from point A to point B avoiding objects (like ovals, rects ...) that are between them. I know that this can be done using some algorithm like A-star, but in all examples i found on the net, there is a matrix of fields or something like that ... and i just have a matrix of pixels :) And, one more thing, every "subline" of this polyline needs to be horizontal or vertical (no diagonal lines).

Any help is greatly appreciated.

Joshefin

[593 byte] By [Joshefina] at [2007-11-27 7:52:59]