Constant UMH_PATTERN

const UMH_PATTERN: [MotionVector; 16];

Uneven multi-hexagon search pattern around a center point. Used for locating irregular movement.

     X
   X   X
 X       X
 X       X
 X   o   X
 X       X
 X       X
   X   X
     X

’X’s are motion candidates and the ‘o’ is the center.