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%D Downloading
beginfig (1) ;
path p, q ;
p := (0,110)..(50,110) shifted (0,-15)..(100,110)--
(50,50) shifted (10,0) ..(50,50) shifted (0,2.5)..
(50,50) shifted(-10,0)--cycle ;
q := (5,0)--(95,0)--(95,30)..(50,0) shifted (0,10)..(5,30)--cycle ;
pickup pencircle scaled 15 ;
drawdot (80,100) withcolor .6red ;
drawdot (65,95) withcolor .6red ;
drawdot (50,95) withcolor .6red ;
drawdot (35,95) withcolor .6red ;
drawdot (50,60) withcolor .6red ;
drawdot (50,35) withcolor .6red ;
drawdot (50,10) withcolor .6red ;
drawdot (70,10) withcolor .6red ;
drawdot (32.5,10) withcolor .6red ;
pickup pencircle scaled 5 ;
fill p withcolor .6green ; draw p withcolor .4green ;
fill q withcolor .6green ; draw q withcolor .4green ;
bboxmargin := 2.5 ; p := bbox currentpicture ;
picture s ; s := currentpicture ; currentpicture := nullpicture ;
pickup pencircle scaled 2.5 ;
fill p withcolor .4blue ;
addto currentpicture also s ;
endfig ;
%D WWW Links
beginfig (2) ;
boolean angles [], lengths[], colors [][][] ;
numeric a, l, r, g, b, n ;
path p ;
color c ;
draw fullsquare scaled 150 withpen pencircle scaled 1 withcolor .5white ;
n := 0 ;
forever :
a := 6 * round(uniformdeviate 60) ;
l := 40 + round(uniformdeviate 60) ;
r := 2 + round(uniformdeviate 6) ;
g := 2 + round(uniformdeviate 6) ;
b := 2 + round(uniformdeviate 6) ;
if (a>0) and not known angles [a] and not known lengths[l] and not known colors [r][g][b] :
n := n + 1 ;
angles [a] := true ;
lengths[l] := true ;
colors [r][g][b] := true ;
p := (origin--origin shifted (0,.5l)) rotatedaround(origin,a) ;
draw p withpen pencircle scaled 2 withcolor (r/10,g/10,b/10) ;
drawdot point 1 of p withpen pencircle scaled 4 withcolor (r/10,g/10,b/10) ;
p := (origin shifted (0,.5l+8)--origin shifted(0,100)) rotatedaround(origin,a) ;
draw p withpen pencircle scaled 2 withcolor (r/10,g/10,b/10) ;
drawdot point 0 of p withpen pencircle scaled 4 withcolor (r/10,g/10,b/10) ;
fi ;
exitif n >= 60 ;
endfor ;
drawdot
origin
withpen pencircle scaled 10
withcolor white ;
fill
((fullcircle scaled 130) peepholed (fullsquare scaled 150))
withcolor (1,1,1)-(1,.62,.06);
clip currentpicture to fullsquare scaled 130 ;
endfig ;
%D Mirrors
beginfig(3)
path a, b, p, q ;
pair s, t, u, v ;
color c ;
numeric h, w, r ;
pickup pencircle scaled 10 ;
h := 120 ;
w := 80 ;
r := 30 ;
a := (0,0)..(0,.5h) shifted (-r,0)..(0,h) ;
b := (w,0)..(w,.5h) shifted ( r,0)..(w,h) ;
draw a withcolor .4white;
draw b withcolor .4white;
def moved (expr i) =
((i) - 10 + uniformdeviate 20)
enddef ;
for i=5 step 10 until h-5 :
s := (point (length(a)*(i/h)) of a) ;
t := (point (length(b)*(1-i/h)) of b) ;
u := (s--t) intersectionpoint ((.25w,0)--(.25w,h)) ;
v := (s--t) intersectionpoint ((.75w,0)--(.75w,h)) ;
p := s..(xpart u,moved(ypart u))..(xpart v,moved(ypart v))..t ;
c := (0,.4+uniformdeviate.55,0) ;
l := length(p) ;
l := .25l+uniformdeviate.5l ;
q := p cutafter point l of p ;
pickup pencircle scaled 2.5 ;
draw p withcolor c ;
pickup pencircle scaled 5 ;
drawdot point 0 of p withcolor c ;
drawdot point infinity of p withcolor c ;
endfor ;
picture s ; s := currentpicture ; currentpicture := nullpicture ;
bboxmargin := 2.5 ; fill bbox s withcolor .85white ;
addto currentpicture also s ;
endfig;
%D Team
def dpuppet (expr v, w) =
v - .5w + uniformdeviate w
enddef ;
def somepuppet (expr s, r) =
picture p ; p := currentpicture ; currentpicture := nullpicture ;
draw ((-10,0)--(10,0)) ;
for i:=-10 step 5 until 10 :
draw ((i,0)--(dpuppet(i,2),-10)) ;
endfor ;
currentpicture := currentpicture rotated r shifted s ;
addto currentpicture also p ;
enddef ;
def puppet (expr loc, sca, col) =
picture s ; s := currentpicture ; currentpicture := nullpicture ;
pair a ; a := (dpuppet( 20,5),dpuppet( 0, 5)) ;
pair b ; b := (dpuppet(-20,5),dpuppet( 0, 5)) ;
pair c ; c := (dpuppet( 30,5),dpuppet(60,10)) ;
pair d ; d := (dpuppet(-30,5),dpuppet(60,10)) ;
pair e ; e := (dpuppet( 0,5),dpuppet(30,10)) ;
pair f ; f := (dpuppet( 0,5),dpuppet(50,10)) ;
pair g ; g := (dpuppet( 0,5),dpuppet(65,10)) ;
pair f ; f := (.6+uniformdeviate.1)[e,g] ;
drawoptions (withcolor col) ;
somepuppet(a,dpuppet( 20,5)) ;
somepuppet(b,dpuppet( -20,5)) ;
somepuppet(c,dpuppet( 120,5)) ;
somepuppet(d,dpuppet(-120,5)) ;
draw a -- e ;
draw b -- e ;
draw c -- f ;
draw d -- f ;
draw e -- g ;
draw fullcircle scaled 25 shifted (g shifted (0,12.5));
drawoptions () ;
currentpicture := currentpicture scaled sca shifted loc ;
addto currentpicture also s ;
enddef ;
beginfig (4) ;
pickup pencircle scaled 0 ;
color col ; col := (.4,.8,.6) ;
puppet((-20, 0) ,.20, 0.700col) ;
puppet(( 10,10) ,.30, 0.750col) ;
puppet(( 30,20) ,.40, 0.800col) ;
puppet((-20,30) ,.35, 0.850col) ;
puppet(( 20,60) ,.20, 0.900col) ;
puppet(( -5,65) ,.25, 0.950col) ;
picture s ; s := currentpicture ; currentpicture := nullpicture ;
bboxmargin := 15 ; fill bbox s withcolor .8(1,1,0) ;
addto currentpicture also s withpen pencircle scaled .8 ;
path b ; bboxmargin := -10 ; b := bbox currentpicture ;
numeric len ; len := length(b) ;
numeric stp ; stp := 20 ;
drawoptions(withpen pencircle scaled .8 withcolor .7red) ;
for i=len/8stp step len/4stp until len+len/8stp :
pair ii ; ii := point (dpuppet(i,len/20stp)) of b ;
pair dd ; dd := (direction i of b) rotated (dpuppet(-90,10)) ;
draw ii shifted -.1dd withpen pencircle scaled 1.2 ;
draw ii--(ii shifted .25dd) ;
endfor ;
endfig ;
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