Path: chuka.playstation.co.uk!scea!hobbes From: jamin1@psu.edu (Jamin Frederick) Newsgroups: scee.yaroze.programming.3d_graphics Subject: Re: "center" Date: Mon, 29 Jun 1998 21:27:05 GMT Organization: SCEA News Server Lines: 18 Message-ID: <6n90bb$51f1@scea> References: <35911bf4.80589781@news.scea.sony.com> NNTP-Posting-Host: 204.240.38.127 X-Newsreader: News Xpress 2.01 I figured it out, "center" is the center of mass of the object, and rotation is not done about this point, but always about the origin (0,0,0). To make an object rotate around its center, and if its "center" is offset, you have to translate the whole object so that its center sits on (0,0,0). Then rotation will be correct (around the center) of the object. Jamin In article <35911bf4.80589781@news.scea.sony.com>, jamin1@psu.edu wrote: > Could someone tell me the significance of the "center" coords >of .rsd files? Is this center coord with respect to the object's own >coord system, and if so, why is it needed? Is rotation and scaling >done about this "center" or the origin of the object's coord system? > >Thanks, > >Jamin