public static List <PointyHexPoint> GetArc( this IMap3D <PointyHexPoint> map, PointyHexPoint origin, Facing startAngle, Facing endAngle, int minRadius, int maxRadius) { List <PointyHexPoint> result = new List <PointyHexPoint>(); for (int radius = minRadius; radius <= maxRadius; radius++) { PointyHexPoint cursor = origin + (startAngle.Offset() * radius); PointyHexPoint finish = origin + (endAngle.Offset() * radius); Facing facing = startAngle.CW(2); while (cursor != finish) { for (int step = 0; step < radius; step++) { result.Add(cursor); cursor += facing.Offset(); } facing = facing.CW(); } result.Add(cursor); } return(result); }