Question

Possible Duplicate:
Calculate Bounding box coordinates from a rotated rectangle, Picture inside.

I have a rotated rectangle,
So how do i calculate the size of axis-aligned bounding box for the rotated rectangle in 2D Coordinates?

Attach Image
http://img88.imageshack.us/img88/503/rotp.png

i know x, y, o (angle)
but how do i get a, b

Thank you

Answer 1

a = abs(x * sin(o)) + abs(y * cos(o))
b = abs(x * cos(o)) + abs(y * sin(o))