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4850计算器坐标正反算交点法程序

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4850坐标正反算(交点法与线元法的联合应用)全线

f(x)—4850全线通坐标正、反算 Deg:Defm 11:

M≠0=>GOTO X:≠>GOTO 0⊿ ---当M=0,为反算;当M≠0时,为正算。 LbI 0: \"OX,OY,OS”:{XYS}: ---中线外任意点X、Y坐标,S为一个曲线附近任意一个桩号。 Z〔8〕=X: Z〔9〕=Y+0.0001:

S”S=”:Z=1=>GOTO Y:≠>Z=2=>GOTO Z⊿ LbI X: {Z}:

Z=-1=>GNEAFRC: {S}:S:GOTO 1:≠>Z=-2=>NEFPRQ○: {S}:S:GOTO 6{S}:≠>Z=1=>GOTO Y:≠>Z=2=>GOTO Z⊿⊿⊿⊿⊿ LbI Z:

S≤等缓曲线终点桩号=>G=等缓曲线交点桩号:N=交点(X)坐标:

E=交点(Y)坐标:A=转角(左转为负,右转为正):F=起点切线方位角:R=半径:C=缓和曲线长度:GOTO 1⊿

S≤线元终点桩号=>Q=线元起点桩号:○=线元终点桩号;N=线元起点(X)坐标:E=线元起点(Y)坐标:F=线元起点切线方位角:P=线元起点曲率半径(左转为负,右转为正):R=线元终点曲率半径(左转为负,右转为正):GOTO 6⊿ S≤„„„„„„„„. LbI Y:

S≤等缓曲线终点桩号=>G=等缓曲线交点桩号:N=交点(X)坐标:

E=交点(Y)坐标:A=转角(左转为负,右转为正):F=起点切线方位角:R=半径:C=缓和曲线长度:GOTO 1⊿

S≤线元终点桩号=>Q=线元起点桩号:○=线元终点桩号;N=线元起点(X)坐标:E=线元起点(Y)坐标:F=线元起点切线方位角:P=线元起点曲率半径(左转为负,右转为正):R=线元终点曲率半径(左转为负,右转为正):GOTO 6⊿ S≤„„„„„„„„. LbI 1:

P=C2/24R-C4/2688R3+C6/678450R5: Q=C/2-C3/240R2+C5/41472R4: B=90C/ πR:

T=(R+P)tan(AbsA/2)+Q: W=(R+P)/cos(A/2)-R: L=(AbsA-2B) πR/180+2C: Z〔1〕=G-T: Z〔2〕=Z〔1〕+C: Z〔3〕=Z〔1〕+L/2: Z〔4〕=Z〔1〕+L-C: Z〔5〕=Z〔1〕+L: A<0=>I=-1:≠>I=1: ⊿ U=F+A/2+90I: V=W+R: B=N+VcosU: ○=E+VsinU: LbI 2:

S≤Z〔1〕=>L=T+Z 〔1〕-S: V=F+180: U=F: GOTO 3⊿

S≤Z〔2〕=>L=S-Z 〔1〕: Q=L-L5/40R2 C2+L9/3456(RC)4: P=L3/6RC-L7/336(RC)3+L11/42240(RC)5: V=√(Q2+P2): L=30IL2/πR C: Q=F+Itan-1(P/Q): P=F+180: U=F+3L: GOTO 4⊿

S≤Z〔4〕=>L=F+A/2+180+90I+180(S-Z〔3〕)I/πR :

U=L+90I: GOTO 5⊿

S≤Z〔5〕=>L= Z〔5〕-S: Q=L-L5/40R2 C2+L9/3456(RC)4: P=L3/6RC-L7/336(RC)3+L11/42240(RC)5: V=√(Q2+P2): L=30IL2/πR C:

Q=F+A+180-I tan-1(P/Q): P=F+A: U=F+A-3L: GOTO 4⊿

S>Z〔5〕=>L=S-Z〔5〕+T: V=F+A: U=V: GOTO 3⊿ LbI 3: X=N+LcosV: Y=E+LsinV: U=U:

M=0=>GOTO 8: ≠>GOTO 7⊿ LbI 4:

X=N+TcosP+VcosQ: Y=E+TsinP+VsinQ: U=U:

M=0=>GOTO 8: ≠>GOTO 7⊿ LbI 5: X=B+RcosL: Y=○+RsinL: U=U:

M=0=>GOTO 8: ≠>GOTO 7⊿ LbI 6:

Z〔6〕=(R-P)/Abs(○-Q) Z〔7〕= Abs(S-Q): I= Z〔6〕* Z〔7〕: U=F+90(I+2P)* Z〔7〕/π: A=F+45(I/4+2P) Z〔7〕/2π: B=F+135(3I/4+2P)* Z〔7〕/2π: C=F+45(I/2+2P) Z〔7〕/π:

X=N+ Z〔7〕/12*(cosF+4*(cosA+cosB)+2cosC+cosU): Y=E+ Z〔7〕/12*(sinF+4*(sinA+sinB)+2sinC+sinU): M=0=>GOTO 8: ≠>GOTO 7⊿ LbI 7:{DV}: G=X+Dcos(U+V): H=Y+Dsin(U+V): U<0=>U=U+360⊿ U>360=>U=U-360⊿ S:Pause 0:G: Pause 0:H▲

{D}:D:D≠0=>GOTO 7: ≠>GOTO 9⊿ LbI 8:J=0:

Z〔10〕=(X-Z〔8〕)sin(U-90)-(Y-Z〔9〕)cos(U-90):

Abs Z〔10〕≤0.001=>S=S+ Z〔10〕:POI(Z〔8〕-X, Z〔9〕-Y): J=J-U:

J<0=>J=J+360: ≠>J=J ⊿

J<180=>Z〔11〕=1: ≠>Z〔11〕=-1⊿ “OK”:

Z〔11〕*I:Pause 0:S”S=”: Pause 0:J->DMS▲

GOTO 0: ≠>S=S+ Z〔10〕:Z=1=>GOTO Y: ≠>Z=2=>GOTO Z⊿GOTO 0 ⊿ LbI 9: K:S=S+K:GOTO X

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