Obtain the position that gets transformed to the origin by <code>this</code> matrix.
This can be used to get the position of the "camera" from a given <i>view</i> transformation matrix.
<p>
This method is equivalent to the following code:
<pre>
Matrix3x2d inv = new Matrix3x2d(this).invert();
inv.transform(origin.set(0, 0));
</pre>
@param origin
will hold the position transformed to the origin
@return origin
Obtain the position that gets transformed to the origin by <code>this</code> matrix. This can be used to get the position of the "camera" from a given <i>view</i> transformation matrix. <p> This method is equivalent to the following code: <pre> Matrix3x2d inv = new Matrix3x2d(this).invert(); inv.transform(origin.set(0, 0)); </pre>
@param origin will hold the position transformed to the origin @return origin