Winamp Forums > AVS idiot movement question

 9th December 2002, 20:17 #1 Clinical Junior Member   Join Date: Nov 2002 Location: somewhere within Posts: 41 idiot movement question Just a quickie for anybody that likes answering stupid questions... how do I make something rotate in 2-D? I have a nifty effect that I'm using, and I want it to rotate clockwise, but for some reason (most likely my mathematical ineptitude) I can't figure out how to do it. Could somebody point me in the right direction...? Thanks.
 9th December 2002, 21:06 #2 uNDefineD Senior Member     Join Date: Jan 2002 Location: Melbourne, Australia Posts: 296 In a movement, type: r=r+0.1; Increase the 0.1 for a faster rotation. Or for more responsiveness, type this in a DM: init: a=1; frame: fr=fr+bfr*a; beat: bfr=rand(10)/100; a=-a; pixel: r=r+fr; In pixel, add d=d/1.05 for a bit of zoom.
 9th December 2002, 21:09 #3 nixa Senior Member   Join Date: Jul 2002 Posts: 149 If you need a list of effects rotating use a dynamic movement: frame: t=t+0.05; pixel: r=r+t; if you need a super scope rotating add t=t+0.05 to frame and this to end of poind section: svx=x;x=sin(t)*x+cos(t)*y;y=cos(t)*svx-sin(t)*y;
 10th December 2002, 05:48 #4 Jaheckelsafar Major Dude   Join Date: Feb 2002 Location: home Posts: 1,318 You can also rotate in the cartesian system. x1=cos(r)*x+sin(r)*y; y1=-sin(r)*x+cos(r)*y; x=x1; y=y1; It's faster that converting to polar then back (I think). Stoke me a clipper. I'll be back for Christmas. - Arnold Rimmer Red Dwarf
 10th December 2002, 05:58 #5 dirkdeftly Forum King     Join Date: Jun 2001 Location: Cydonia, Mars Posts: 2,651 Quicker, but less acurate. The rectangular rotation is ellipsoidal, instead of circular. "guilt is the cause of more disauders than history's most obscene marorders" --E. E. Cummings
 10th December 2002, 06:33 #6 Jaheckelsafar Major Dude   Join Date: Feb 2002 Location: home Posts: 1,318 You can scale the rotation the normal way. x1=(cos(r)*y+cos(r)*y)*h/w; Stoke me a clipper. I'll be back for Christmas. - Arnold Rimmer Red Dwarf
 10th December 2002, 18:33 #7 Clinical Junior Member   Join Date: Nov 2002 Location: somewhere within Posts: 41 Argh... this is not working out the way I wanted it to... this thing does not rotate well, apparently. Thanks for the help though, I'll keep it in mind next time I want to rotate something.
 11th December 2002, 06:28 #8 Jaheckelsafar Major Dude   Join Date: Feb 2002 Location: home Posts: 1,318 Post the preset. Let us see the code, maybe we can spot errors. Stoke me a clipper. I'll be back for Christmas. - Arnold Rimmer Red Dwarf
 Winamp Forums > AVS idiot movement question