public AnsysArea()
{
P4 = null; P5 = null; P6 = null; P7 = null; P8 = null; P9 = null;
P10 = null; P11 = null; P12 = null; P13 = null; P14 = null;
P15 = null; P16 = null; P17 = null; P18 = null;
}
public AnsysLine(AnsysKeypoint k1, AnsysKeypoint k2)
{
K1 = k1;
K2 = k2;
}