'判断点在区域内函数 Dq_{O
Function point_in(p1x As Single, p1y As Single, p2x As Single, p2y As Single, p3x As Single, p3y As Single, p4x As Single, p4y As Single, ppx As Single, ppy As Single) As Boolean d(dw]6I6
Dim aob, boc, cod, doa, sum As Single /ltP@*bo
If ppx = p1x And ppy = p1y Then ML9T(th6v
point_in = True 4YB7og%P
Exit Function Cq~ah
End If kcZ;SYosj
If ppx = p2x And ppy = p2y Then Rqd %#v
point_in = True (J?}eb;>n
Exit Function 1\7"I-
End If 'AlSq:gZ
If ppx = p3x And ppy = p3y Then PSrt/y!
point_in = True 4<K ,w{I
Exit Function Wy0a2Ve
End If MX< ($M
k%4A::=
aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) }Rf:DmPE
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) He$mu=$q{
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) O( sFs1
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) [laL6
sum = aob + boc + cod + doa IbNTdg]/F`
If 360.01 > sum And sum > 359.99 Then OYRR'X.E
point_in = True C`K9WJOD
Else S0o,)`ZB
point_in = False `peJ s~V
End If y^+[eT&