Finding Tangents on polygons

[renauddl]

Hi,

Congratulation for this nice lib.

I need to compute tangents to polygons:
Given two convex and non-overlapping polygons, find the 4 tangents.

There are some smart algo about that (turning tangents with O(N) complexity,
but I could not find them in JTS, maybe I did not look at the right place?

I could go with convex hull, which would give two tangents out of 4...

Thank you again

Renaud De Landtsheer

[dr-jts]

There's no function for computing tangents in JTS. Perhaps you can find some Java code or an algorithm to do this and adapt it to JTS structures.