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.PS
define smiley {
# takes three arguments: x, y and size (radius)
r0 = $3 # Face
r1 = 0.4*r0 # Radius of mouth and eye locations
r2 = 0.04*r0 # Radius of eyes
C: circle rad r0 at ( $1, $2 )
circle rad r2 filled at last circle + ( r1, r1 ) # Right eye
circle rad r2 filled at 2nd last circle + ( -r1, r1 ) # Left eye
pi = atan2( 0, -1 )
S: C + ( r1 * cos(1.25*pi), r1 * sin(1.25*pi) )
line from S to S
for phi=1.25*pi to 1.75*pi by 0.1 do {
line to C + ( r1 * cos(phi), r1 * sin(phi) ) # Mouth
}
}
pi2 = 2 * atan2( 0, -1 )
for x=0.1 to 1.3 by 0.08 do {
smiley( 1.5 * x * cos(x*pi2), 1.1 * x * sin(x*pi2), 0.23 * x )
}
.PE
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