'判断点在区域内函数 =SXdO)%2
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 G9f6'5 O
Dim aob, boc, cod, doa, sum As Single HEBeJ2w
If ppx = p1x And ppy = p1y Then ?qNU*d
point_in = True >\d&LLAe
Exit Function tw_o?9
End If !?nbB2,
If ppx = p2x And ppy = p2y Then bZ\R0[0
point_in = True k
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Exit Function J?9jD:x
End If ,WRm{v0f^
If ppx = p3x And ppy = p3y Then 5EFt0?G
point_in = True t>[W]%op
Exit Function wM+1/[7
End If GGp.u@\r
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aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) G:<f(Gy
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) XOvJlaY)'.
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) 6kYluV+j
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) g'7E6n"!,
sum = aob + boc + cod + doa zMsup4cl
If 360.01 > sum And sum > 359.99 Then G-d7}Uz?
point_in = True x4WCAqi/2
Else \N9=13W<lK
point_in = False {DRk{>K,
End If .d<K` .O;
End Function