问题
Possible Duplicate:
Calculate Bounding box coordinates from a rotated rectangle, Picture inside
AABB of rotated sprite?
I have a rectangle with a width of w and height of h. I rotate the rectangle r degrees(originating at its center point).
How can I determine the width(w2) and height(h2) of the bounding box after the rotation.
来源：https://stackoverflow.com/questions/10177308/how-to-get-width-and-height-of-the-bounding-box-of-a-rotated-rectangle