you give array point integer angle location location posx posy pointsi xi yi denote integral coordinate XY planeinitially face directly east position you position rotate in word posx posy change your field view degree represent angle determine wide give view direction let d degree rotate counterclockwise Then field view inclusive range angle d angle2 d angle2Your browser support video tag video formatyou set point point angle form point position immediate east direction position field viewthere multiple point coordinate there point location point regardless rotation Points obstruct vision pointsreturn maximum number point example 1input point 212233 angle 90 location 11output 3explanation the shaded region represent field view all point visible field view include 33 22 line sightexample 2input point 21223411 angle 90 location 11output 4explanation all point visible field view include locationexample 3input point 1021 angle 13 location 11output 1explanation you point show Constraints1 pointslength 105pointsilength 2locationlength 20 angle 3600 posx posy xi yi 100