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Algorithm behind vec_rotate #468827 10/22/17 13:15 10/22/17 13:15
Joined: Mar 2006 Posts: 1,993 Karlsruhe PadMalcom OP Serious User
PadMalcom OP Serious User Joined: Mar 2006 Posts: 1,993 Karlsruhe	Hi, I've been searching for a way to rotate a vector as vec_rotate does it. Now I'm too curious to see the algorithm behind it. Can you explain it briefly? Terrain tutorial using Shade-C amBx-Plugin - use amBx in GameStudio 3D Tower Defence

Re: Algorithm behind vec_rotate [Re: PadMalcom] #468831 10/22/17 14:03 10/22/17 14:03
Joined: Sep 2009 Posts: 993 Budapest Aku_Aku User
Aku_Aku User Joined: Sep 2009 Posts: 993 Budapest	Maybe it helps: rotating...

Re: Algorithm behind vec_rotate [Re: Aku_Aku] #468836 10/23/17 08:58 10/23/17 08:58
Joined: Jun 2009 Posts: 2,210 Bavaria, Germany Kartoffel Expert
Kartoffel Expert Joined: Jun 2009 Posts: 2,210 Bavaria, Germany	I guess it's three consecutive "2d" rotations (pan rotates xy, tilt xz, and roll yz). I'm not sure in which order they are performed, though. POTATO-MAN saves the day! - Random

Re: Algorithm behind vec_rotate [Re: Kartoffel] #468838 10/23/17 09:33 10/23/17 09:33
Joined: Sep 2003 Posts: 6,861 Kiel (Germany) Superku Senior Expert
Superku Senior Expert Joined: Sep 2003 Posts: 6,861 Kiel (Germany)	Have a look here: http://www.conitec.net/beta/ang_to_matrix.htm "Falls das Resultat nicht einfach nur dermassen gut aussieht, sollten Sie nochmal von vorn anfangen..." - Manual Check out my new game: Pogostuck: Rage With Your Friends

Re: Algorithm behind vec_rotate [Re: Superku] #468842 10/23/17 11:23 10/23/17 11:23
Joined: Jul 2000 Posts: 27,982 Frankfurt jcl Chief Engineer
jcl Chief Engineer Joined: Jul 2000 Posts: 27,982 Frankfurt	Yes, that's the algorithm. The angle is converted to a rotation matrix, with which the vector is then multiplied.

Re: Algorithm behind vec_rotate [Re: jcl] #469272 11/10/17 06:11 11/10/17 06:11
Joined: Mar 2006 Posts: 1,993 Karlsruhe PadMalcom OP Serious User
PadMalcom OP Serious User Joined: Mar 2006 Posts: 1,993 Karlsruhe	Thank you all! Terrain tutorial using Shade-C amBx-Plugin - use amBx in GameStudio 3D Tower Defence

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