orient3

orient3, phi, theta
or orient3, phi
or orient3, , theta
or orient3
Set the "orientation" of the object to (PHI,THETA). "Orientations"
are a subset of the possible rotation matrices in which the zaxis
of the object appears vertical on the screen (that is, the object
zaxis projects onto the viewer yaxis). The THETA angle is the
angle from the viewer yaxis to the object zaxis, positive if
the object zaxis is tilted toward you (toward viewer +z). PHI is
zero when the object xaxis coincides with the viewer xaxis. If
neither PHI nor THETA is specified, PHI defaults to pi/4 and
THETA defaults to pi/6. If only one of PHI or THETA is specified,
the other remains unchanged, unless the current THETA is near pi/2,
in which case THETA returns to pi/6, or unless the current
orientation does not have a vertical zaxis, in which case the
unspecified value returns to its default.
Unlike rot3, orient3 is not a cumulative operation.
interpreted function, defined at i/pl3d.i line 127
