def to_(self, off_pts):
        """Reverse of :meth:`from_`."""
        off_pts = np.asarray(off_pts, dtype=np.float)
        has_z = (off_pts.shape[-1] > 2)

        # scale according to current settings
        scale_pt = [self.viewer._org_scale_x, self.viewer._org_scale_y]
        if has_z:
            scale_pt.append(self.viewer._org_scale_z)

        off_pts = np.multiply(off_pts, scale_pt)
        return off_pts
Reverse of :meth:`from_`.