PHP Manual . ... PHP 4 >= 4.0.0) swf_lookat -- Define a viewing transformation . void swf_lookat ( float view_x, float view_y, float view_z, float reference_x, float reference_y, float reference_z, float twist) . The swf_lookat() function defines a viewing transformation by giving the viewing position (the parameters view_x , view_y , and view_z ) and the coordinates of a reference point in the scene, the reference point is defined by the reference_x , reference_y , and reference_z parameters. ...