00007 {
00008 Point3D p1 = *pA;
00009 Point3D p2 = *pB;
00010
00011 if (p1[1] >= 0)
00012 if (p2[1] >= 0)
00013 return (p1[0] <= p2[0]);
00014 else
00015 return false;
00016 else
00017 if (p2[1] >= 0)
00018 return true;
00019 else
00020 return (p1[0] > p2[0]);
00021 }
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