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.PS
# Cylinder.m4
gen_init(SIdefaults) # lengths are in mm
define(`cylinder',`[ angle = ifelse(`$3',,20,`$3')
w = ifelse(`$1',,boxwid,`$1')
h = ifelse(`$2',,boxht,`$2')
B: ellipse wid w ht sind(angle)*w
S: box invis wid w ht h fill_(1) with .s at B
line from S.nw to S.sw
line from S.ne to S.se
T: ellipse wid w ht sind(angle)*w at B+(0,h)
]')
define Cylinder { [ dtor = atan2(1,0)/90
if "$1"=="" then { w = boxwid } else { w = $1 }
if "$2"=="" then { h = boxht } else { h = $2 }
if "$3"=="" then { angle = 20 } else { angle = $3 }
B: ellipse wid w ht sin(angle*dtor)*w
S: box invis wid w ht h fill 1 with .s at B
line from S.nw to S.sw
line from S.ne to S.se
T: ellipse wid w ht sin(angle*dtor)*w at B+(0,h)
] }
M4: [
cylinder
move
cylinder(,,15)
move
cylinder(3,50)
]
"M4 macro" at last [].s below
Pic: [
Cylinder
move
Cylinder(,,15)
move
Cylinder(3,50)
] with .w at M4.e+(5,0)
"pic macro" at last [].s below
.PE
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