Hi again.
I am able to get an AxisAngle4d for rotating one vector into another, and I
can go from there to a Transform3D all right. The problem is that I would
like to constrain the rotation, and my constraints are in Euler angles. Is
there a way to calculate the Euler angles of the transformation? That way, I
could constrain it and then calculate the Transform3D, saving some cpu time
by not having to do it twice.
B.D.
>From: Bob Dengle <[EMAIL PROTECTED]>
>Reply-To: Discussion list for Java 3D API <[EMAIL PROTECTED]>
>To: [EMAIL PROTECTED]
>Subject: Re: [JAVA3D] Rotating One Vector Into Another
>Date: Sat, 7 Jul 2001 12:33:06 -0700
>
>Thank you David, Leyland, Fred and Kynn!
>
>B.D.
>
>>From: David Yazel <[EMAIL PROTECTED]>
>>Reply-To: Discussion list for Java 3D API <[EMAIL PROTECTED]>
>>To: [EMAIL PROTECTED]
>>Subject: Re: [JAVA3D] Rotating One Vector Into Another
>>Date: Sat, 7 Jul 2001 01:55:24 -0400
>>
>>Well if they are really vectors then they are origin based, so all you
>>really need to preserve is the scale. Take the scale of the second vector
>>and apply it to the normalized version of the first. This will
>>effectively
>>use the rotation of the first and the scale of the second.
>>
>>Vector3d temp = new Vector3d(first);
>>temp.normalize();
>>temp.scale(second.length());
>>second.set(temp);
>>
>>Dave Yazel
>>
>>----- Original Message -----
>>From: Bob Dengle <[EMAIL PROTECTED]>
>>To: <[EMAIL PROTECTED]>
>>Sent: Saturday, July 07, 2001 1:40 AM
>>Subject: [JAVA3D] Rotating One Vector Into Another
>>
>>
>>Hi
>>
>>I have two vector3ds. I want to rotate one so that it falls along the same
>>line as the other. Does anyone have any suggestions on how to do this? I
>>know how to compute the angle between the two vectors, but how do I go
>>from
>>there to a rotation matrix? Thanks in advance.
>>
>>B.D.
>>_________________________________________________________________
>>Get your FREE download of MSN Explorer at http://explorer.msn.com
>>
>>===========================================================================
>>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".
>>
>>===========================================================================
>>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".
>
>_________________________________________________________________
>Get your FREE download of MSN Explorer at http://explorer.msn.com
>
>===========================================================================
>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".
_________________________________________________________________
Get your FREE download of MSN Explorer at http://explorer.msn.com
===========================================================================
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".
