Well, the rotations that we had discussed before assume that you know the component angles for each coordinate. In some cases, I know the endpoints of a cylinder. Don't know the angle that this cylinder makes with any particular axis. Just know the endpoints. So how would I transform a pair of endpoints into angles that allow me to rotate that cylinder?
-- John On Sun, 30 Sep 2001, Eric Reiss wrote: > Date: Sun, 30 Sep 2001 20:42:22 -0400 > From: Eric Reiss <[EMAIL PROTECTED]> > Reply-To: Discussion list for Java 3D API <[EMAIL PROTECTED]> > To: [EMAIL PROTECTED] > Subject: Re: [JAVA3D] How to rotate objects? > > I think you need to explain this a little more. Getting a rotation from > points would require a little more explanation. > > At 08:37 PM 09/30/2001 -0400, you wrote: > >Thanks... > > > >I tried something similar to this but I instantiated the Transform3d with > >the rotation matrix as one of the constructor's parameters. The API > >reference says you can do this but it didn't work. I'll try your > >suggestion (using setRotation) and see if that does the trick. > > > >Oh, one more question... is there an easy way to create a rotation matrix > >based on a pair of Points or Vectors describing two endpoints? I don't > >necessarily know the angle for rotations. Sometimes I start with the > >endpoints. > > > >-- John -- _____________________________________________________ John T. Nelson President | Computation.com Inc mail: | [EMAIL PROTECTED] company: | http://www.computation.com/ journal of computation: | http://www.computation.org/ _____________________________________________________ "Providing quality IT consulting services since 1992" =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
