用坐標(biāo)系操作來(lái)繪制圓：
命令流:
CSWPLA,11,1,0.5,1
/PREP7
K,1,-5
K,2,5
L,1,2
CSYS,0
LSYMM,Y,1,,,,0,0
lglue,all
al,1,3
詳細(xì)解釋:
查閱幫助得知:
1.CSWPLA：
/*
CSWPLA, KCN, KCS, PAR1, PAR2
Defines a local coordinate system at the origin of the working plane.
KCN
Arbitrary reference number assigned to this coordinate system. Must be greater than 10. A coordinate system previously defined with this number will be redefined.
KCS
Coordinate system type:
0 or CART --
Cartesian
1 or CYLIN --
Cylindrical (circular or elliptical)
2 or SPHE --
Spherical (or spheroidal)
3 or TORO --
Toroidal
PAR1
Used for elliptical, spheroidal, or toroidal systems. If KCS = 1 or 2, PAR1 is the ratio of the ellipse Y-axis radius to X-axis radius (defaults to 1.0 (circle)). If KCS = 3, PAR1 is the major radius of the torus.
PAR2
Used for spheroidal systems. If KCS = 2, PAR2 = ratio of ellipse Z-axis radius to X-axis radius (defaults to 1.0 (circle)).
*/ 可以知道第一句是定義了一個(gè)圓柱坐標(biāo)系
第三四句就創(chuàng)建了橢圓的兩個(gè)端點(diǎn).
第五句創(chuàng)建連接兩個(gè)點(diǎn)構(gòu)成一條線(xiàn)（因?yàn)槭菆A柱坐標(biāo)系，所以繪制的線(xiàn)不是直線(xiàn)了：）
csys，0切換到整體坐標(biāo)系.
最后"LSYMM,Y,1,,,,0,0"一句進(jìn)行對(duì)稱(chēng)繪制.
然后lglue,all把兩條線(xiàn)連接起來(lái)，最后一句繪制橢圓面.
這個(gè)里面比較難以理解的是用l,1,2命令連接兩點(diǎn)得到的不是直線(xiàn)而是曲線(xiàn).
命令流:
CSWPLA,11,1,0.5,1
/PREP7
K,1,-5
K,2,5
L,1,2
CSYS,0
LSYMM,Y,1,,,,0,0
lglue,all
al,1,3
詳細(xì)解釋:
查閱幫助得知:
1.CSWPLA：
/*
CSWPLA, KCN, KCS, PAR1, PAR2
Defines a local coordinate system at the origin of the working plane.
KCN
Arbitrary reference number assigned to this coordinate system. Must be greater than 10. A coordinate system previously defined with this number will be redefined.
KCS
Coordinate system type:
0 or CART --
Cartesian
1 or CYLIN --
Cylindrical (circular or elliptical)
2 or SPHE --
Spherical (or spheroidal)
3 or TORO --
Toroidal
PAR1
Used for elliptical, spheroidal, or toroidal systems. If KCS = 1 or 2, PAR1 is the ratio of the ellipse Y-axis radius to X-axis radius (defaults to 1.0 (circle)). If KCS = 3, PAR1 is the major radius of the torus.
PAR2
Used for spheroidal systems. If KCS = 2, PAR2 = ratio of ellipse Z-axis radius to X-axis radius (defaults to 1.0 (circle)).
*/ 可以知道第一句是定義了一個(gè)圓柱坐標(biāo)系
第三四句就創(chuàng)建了橢圓的兩個(gè)端點(diǎn).
第五句創(chuàng)建連接兩個(gè)點(diǎn)構(gòu)成一條線(xiàn)（因?yàn)槭菆A柱坐標(biāo)系，所以繪制的線(xiàn)不是直線(xiàn)了：）
csys，0切換到整體坐標(biāo)系.
最后"LSYMM,Y,1,,,,0,0"一句進(jìn)行對(duì)稱(chēng)繪制.
然后lglue,all把兩條線(xiàn)連接起來(lái)，最后一句繪制橢圓面.
這個(gè)里面比較難以理解的是用l,1,2命令連接兩點(diǎn)得到的不是直線(xiàn)而是曲線(xiàn).
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