For a matrix that has only rotation, the inverse is the transpose.
So first get the non-inverted rotation matrix mat, and use trans.set instead
of lookAt.
The columns of mat are the Rt, Up, Dir Vector3ds.
Matrix3d mat;
Transform3d trans;
mat.setColumn( 0, Rt); // Rt is unit vector to camera's right
mat.setColumn( 1, Up); // Up is unit vector for camera's Up
mat.setColumn( 2, Dir); // Dir is unit vector in negative
lookat direction
trans.set( mat, Loc, 1.0); // Loc is camera location
Mike
----- Original Message -----
From: "portsacero" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, June 14, 2002 11:18 AM
Subject: [JAVA3D] lookAt()
> Hello guys,
>
> How can I get the the parameters for a Transform3D.lookAt(target,
> position and vector up) method from the inverted matrix of a Transform3D?
>
>
> Thanks!
>
>
>
>
>
>
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