手工编程铣半个椭圆

G17G49G40G80G90;
G0G54X0.Y0.;
M6T01;
G43H01Z100.;
M3S2000;
#1=90;
WHILE[#1GE0]DO1;
#2=80*SIN[#1];
G0X150.;
G1Z[#2]F5000;
#10=0;
WHILE[#10LE360]DO2;
#11=[100*COS[#1]]*COS[#10];
#12=[80*COS[#1]]*SIN[#10];
G1X[#11]Y[#12]G42D1F2000;
#10=#10+3;
END2;
G1X150.F8000G40;
#1=#1-1;
END1;
G0Z100.;
M30;