如图为两圆之间的距离关系,为了验证正确性,下面编写一段程序: X1=40 X2=-40 DIA=10 DFNVEC PT1, X1, 0, 0 DFNVEC PT2, X2, 0, 0 DFNVEC DI, 0, 0, 1 DFNELE CIR1, CIR DFNELE CIR2, CIR CIR1.$PT=:VEC:PT1 CIR1.$DI=:VEC:DI CIR1.$DM=DIA CIR2.$PT=:VEC:PT2 CIR2.$DI=:VEC:DI CIR2.$DM=DIA DISRFSRF (NAM=(DIS1,DIS2), EL1=CIR1, EL2=CIR2) DIPNTSRF (NAM=DIS3, EL1=CIR1, EL2=CIR2) DIPNTPNT (NAM=DIS4, EL1=CIR1, EL2=CIR2) DIS1=(FABS(X1)+FABS(X2))-DIA) DIS2=(FABS(X1)+FABS(X2))+DIA) DIS3=FABS(X1)+(FABS(X2))-(DIA/2)) DIS4=FABS(X1)+FABS(X2) 这是学习QUINDOS的一种方法,当不明白指令的意义时,可以通过"验证"的方法确认. 验证程序如下: NX=FCOS(60) NZ=FSIN(60) DFNELE (NAM=PLA, TYP=PLA) PUTVALS (OBJ=PLA.ACT, RDS=(X,Y,Z,U,V,W), VAL=(80,0,0,NX,0,NZ)) DIPNTPNT (NAM=DIS1, EL1=REFR$CSY.$ZP, EL2=PLA) DIPNTPNT (NAM=DIS2, EL1=REFR$CSY.$ZP, EL2=PLA.$PLA) 等价 DIPNTSRF (NAM=DIS3, EL1=REFR$CSY.$ZP, EL2=PLA) DIPNTAXI (NAM=DIS4, EL1=REFR$CSY.$ZP, EL2=PLA.$AXI) 等价 DISTNC (NAM=DIS5, EL1=REFR$CSY.$ZP, EL2=PLA.$AXI) !DIS2 DX=80*FSIN(30)*FSIN(30) DZ=80*FSIN(30)*FCOS(30) DZX=80*FSIN(30) LISEXP (DX,DZ,DZX) 然后和结果相比较 Edited by - 刘彬 on 2004/10/26 07:45:18