Re: Drawing Rotated Image

[Troy Rollins <troy at rpsystems dot net>]

On Sep 23, 2005, at 10:17 AM, Joseph J. Strout wrote:

> Let's see, I haven't had my coffee yet so I'm not sure this is the 
> simplest way to do it, but one way to find the rotated position of a 
> corner is to first convert it into polar coordinates (r = 
> sqrt(dx^2+dy^2), ang = ATan2(dx,dy)), then add the rotation amount to 
> the angle (ang), and convert back to cartesian coordinates (dx2 = 
> r*cos(ang), dy2 = r*sin(ang)).
> Nothing that can't be solved with a little math!   :)
Can't just ask the PixMap for its new width and height, huh?  Darn.  ;-)

--
Troy
RPSystems, Ltd.
http://www.rpsystems.net

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