Polygon survey for hybrid aircraft. Based on poly_osam algorithm. Compatible with generic rotorcraft. Support mission mode with custom elements: - points in local NED: SRVHL orientation sweep_distance radius height p1x p1y p2x p2y p3x p3y [p4x p4y] - points in global LLA: SRVHG orientation sweep_distance radius height p1lat p1lon p2lat p2lon p3lat p3lon [p4lat p4lon] - orientation is in degrees, 0 pointing at east, positive counter clockwise - sweep_distance in meters - radius can be: negative, automatically set to sweep/2; zero, not turning on circles; positive, fixed radius - height in meters above reference point - the polygon in mission mode can have either 3 or 4 points, with positions in meters (local) or degrees (global).

@navigation @mission,@digital_cam