Set this matrix to a rotation transformation to make <code>-z</code>
point along <code>dir</code>.
<p>
This is equivalent to calling
{@link #setLookAt(double, double, double, double, double, double, double, double, double)
setLookAt()} with <code>eye = (0, 0, 0)</code> and <code>center = dir</code>.
<p>
In order to apply the lookalong transformation to any previous existing transformation,
use {@link #lookAlong(double, double, double, double, double, double) lookAlong()}
@param dirX
the x-coordinate of the direction to look along
@param dirY
the y-coordinate of the direction to look along
@param dirZ
the z-coordinate of the direction to look along
@param upX
the x-coordinate of the up vector
@param upY
the y-coordinate of the up vector
@param upZ
the z-coordinate of the up vector
@return this
Set this matrix to a rotation transformation to make <code>-z</code> point along <code>dir</code>. <p> This is equivalent to calling {@link #setLookAt(double, double, double, double, double, double, double, double, double) setLookAt()} with <code>eye = (0, 0, 0)</code> and <code>center = dir</code>. <p> In order to apply the lookalong transformation to any previous existing transformation, use {@link #lookAlong(double, double, double, double, double, double) lookAlong()}
@see #setLookAlong(double, double, double, double, double, double) @see #lookAlong(double, double, double, double, double, double)
@param dirX the x-coordinate of the direction to look along @param dirY the y-coordinate of the direction to look along @param dirZ the z-coordinate of the direction to look along @param upX the x-coordinate of the up vector @param upY the y-coordinate of the up vector @param upZ the z-coordinate of the up vector @return this