'判断点在区域内函数 .0~uM!3y
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 * -{|m1P
Dim aob, boc, cod, doa, sum As Single ;K%/s IIke
If ppx = p1x And ppy = p1y Then gU NWM^n
point_in = True 0r8Wv,7Bo
Exit Function NK(_ &.F
End If )S/=5Uc
If ppx = p2x And ppy = p2y Then -|>T?
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point_in = True 1xkrh qq
Exit Function )feZ&G]
End If l=(( >^i
If ppx = p3x And ppy = p3y Then Jyr
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point_in = True w*;"@2y;eY
Exit Function JY^i
End If &g1\0t
e?*Teb ?R
aob = ff_angle(p1x, p1y, ppx, ppy, p2x, p2y) HXztEEK6
boc = ff_angle(p2x, p2y, ppx, ppy, p3x, p3y) x{tlC}t
cod = ff_angle(p3x, p3y, ppx, ppy, p4x, p4y) V*@Y9G
doa = ff_angle(p4x, p4y, ppx, ppy, p1x, p1y) a7453s
sum = aob + boc + cod + doa -5ZmIlL.S
If 360.01 > sum And sum > 359.99 Then $CX3P)%
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point_in = True QG2 Zh9R
Else T# *H
point_in = False BenyA:W"
End If j0V/\Ep)T<
End Function
