Hi, guys. Tks for the answers, but I didnt understand how to rotate it yet. I made a workaround by putting my arm image inside a blank square cover, so the center of the image is where I want. This way I can rotate around the center and get the spected result with the arm -> shoulder joint. But I cant get a good result within forearm -> arm joint.
2012/8/20 Christopher Night <[email protected]> > Right, but note that performing step 2 with pygame.transform.rotate is not > trivial, since it doesn't rotate about the origin, or any particular point > for that matter: the fixed point of rotation depends on the surface > dimensions and the rotation angle. So your step 2 is itself 3 steps. > > For this reason, I generally anchor all my blits to the surface's center. > In this case I would make it easy on myself by adding some margin to the > image so that the desired rotation point is at the center of the image. I > know not everyone likes to do it that way, though. > > -Christopher > On Aug 20, 2012 4:32 PM, "Mark Wexler" <[email protected]> wrote: > >> To rotate around an arbitrary point, >> 1. subtract (vectorially) the center of rotation; >> 2. perform rotation (as if about the origin); >> 3. add the center of rotation. >> >> Mark >> >> >> On Mon, Aug 20, 2012 at 10:10 PM, Ricardo Franco >> <[email protected]> wrote: >> > Hi, I need to rotate around a specific point. >> > It's a person animation. So the arms should rotate over the shoulders' >> > point. >> > How to do that? >> > >> > -- >> > Ricardo Franco Andrade @ricardokrieg >> > >> > ( Game | Desktop | Web ) Developer >> > >> > email: [email protected] >> > contact: +55 (86) 9958 9725 >> > +55 (86) 9436 0830 >> > twitter: twitter.com/ricardokrieg >> > facebooK: https://www.facebook.com/krieg.ricardo >> > github: https://github.com/ricardokrieg >> > >> >> >> >> -- >> Mark Wexler >> Laboratoire Psychologie de la Perception >> CNRS - Université Paris Descartes >> 45, rue des Saints-Pères >> 75006 Paris, France >> http://wexler.free.fr >> > -- Ricardo Franco Andrade @ricardokrieg ( Game | Desktop | Web ) Developer email: [email protected] contact: +55 (86) 9958 9725 +55 (86) 9436 0830 twitter: twitter.com/ricardokrieg facebooK: https://www.facebook.com/krieg.ricardo github: https://github.com/ricardokrieg
