LbI&nbsp&nbsp0:{EG}:A”XA”:B”YA”:C”CA”:D”1/RA”:E”1/RB”:F”DKA”:G”DKB”
LbI&nbsp&nbsp1:{HOR}:H”DKI”:O”DL”:R”DR”:H>G=>Goto3⊿
P=(E-D)÷Abs(H-F):Q=&nbspAbs(H-F):I=P*Q:T=D+I
J=C+(I+2D)*Q*90÷Л▲
M=C+(I÷4+2D)*Q*45÷(2Л):N=C+(3I÷4+2D)*Q*135÷(2Л)
K=C+(I÷2+2D)*Q*45÷Л
X=A+Q(CosC+4(CosM+CosN)+2CosK+CosJ)÷12▲
Y=B+Q(SinC+4(SinM+SinN)+2SinK+SinJ)÷12▲
U”XL”=X+OCos(J-90)&nbsp▲
V”YL”=Y+OSin(J-90)&nbsp▲
W”XR”=X+RCos(J+90)&nbsp▲
Z”YR”=Y+RSin(J+90)&nbsp▲
A=X:B=Y:C=J:D=T:F=H:&nbspGoto1
LbI&nbsp&nbsp3:&nbspA=X:B=Y:&nbspD=E:F=G:&nbspC=J:Goto&nbsp0
“XA"&nbsp”YA“为曲线起点坐标，“CA”为起点切线方位角，“1÷RA”、“1÷RB”为曲线起、止点的曲率半径，左偏为负，右偏为正。“DKA”&nbsp“DKB”为曲线其止里程，缓和曲线要分开算。“DKI”为所求里程。“DL”&nbsp“DR”为左右边桩距离。“JR”=90