catan.ps

%!PS-Adobe-3.0
%%Creator: (Wojciech Pawlik)
%%BoundingBox: 0 0 600 600
%%EndComments
%%BeginProlog

<< /PageSize [600 600] >> setpagedevice
/Helvetica-Bold findfont 20 scalefont setfont
300 300 translate
1 1 1 setrgbcolor
realtime srand

/circle { 0 360 arc } def
/brick  {.87 .36 .15} def
/desert {.83 .80 .56} def
/grain  {.96 .74 .15} def
/ore    {.62 .62 .62} def
/sheep  {.60 .72 .02} def
/water  {.04 .40 .65} def
/wood   {.07 .59 .22} def
/hexsize 50 .75 sqrt div def

/terrains [
	(desert)
	(ore)   dup dup
	(brick) dup dup
	(wood)  dup dup dup
	(grain) dup dup dup
	(sheep) dup dup dup
] def

/fromhexpolar {
gsave
	[100 0 0 100 0 0] setmatrix
	36 add % avoids negative remainder
	1 index 2 copy
	idiv 60 mul rotate
	mod exch
	0 translate
	120 rotate
	0 transform
grestore
} bind def

/position {
	% https://en.wikipedia.org/wiki/Centered_hexagonal_number
	dup 3 div sqrt .5 add cvi % distance from center
	dup 0 ne {
		dup dup mul 3 mul
		3 -1 roll sub
		fromhexpolar
	} if
} bind def

/hex {
1 dict begin
	/a exch def
	0 a moveto
	6 {
		60 rotate
		0 a lineto
	} repeat
	closepath
end
} def

/number {
	0 0 20 circle fill

	% probability dots -- count
	dup 7 sub abs
	6 exch sub

	% appearance
	dup 5 ge {1 0 0} {0 0 0} ifelse setrgbcolor
	[3 3] 0 setdash 3 setlinewidth

	% probability dots -- position
	6 mul 3 sub
	dup -2 div -10 moveto
	0 rlineto stroke

	% text
	2 string cvs
	dup stringwidth pop -2 div
	-3 moveto show
} def

/ppmsize {
	dup 3 setfileposition
	dup token pop exch
	dup token pop exch
	token pop pop
} def

% `--permit-file-read=sprites.ppm`
{ (sprites.ppm) dup (r) file def }
stopped {{pop}} {{
1 dict begin
	0 get 95 sub 4 idiv % hash
	/size [ sprites.ppm ppmsize 8 idiv ] cvx def
	size 3 mul mul mul sprites.ppm fileposition add
	sprites.ppm exch setfileposition
	size 8 [1.25 0 0 -1.25 0 0] sprites.ppm false 3 colorimage
end
}} ifelse
/sprite exch def clear

/port {
gsave
	3 1 roll
	position translate
	90 add rotate
	-11 -60 translate
	gsave
		dup load exec setrgbcolor
		[1 -20 20 20]
		dup rectfill
		dup rectclip
		.5 .5 scale
		exch sprite
	grestore rectstroke
grestore
} def

/swap {
3 dict begin
	/i exch def
	/j exch def
	/array exch def
	array i get
	array j get
	array exch i exch put
	array exch j exch put
end
} def

% shuffle
terrains length -1 1 {
	/i exch def
	terrains i 1 sub rand i mod swap
} for

%%EndProlog
% border
gsave
	90 rotate 300 hex
	water setrgbcolor fill
grestore

5 2 6 3 8 10 9 12 11 4 8 10 9 4 5 6 3 11
0 1 18 {
gsave
	dup position translate
	hexsize hex gsave
		terrains exch get
		dup load exec
		setrgbcolor clip fill
		-22 40 translate
		dup sprite
	grestore stroke
	/sprites.ppm where {
		0 -.375 hexsize mul translate pop
	} if
	(desert) ne {number} if
grestore
} for

% ports
60 rand mul rotate
/~3:1~ {1 1 1} def
180 17 (brick) port
240 16 (~3:1~) port
300 15 (~3:1~) port
300 13 (sheep) port
  0 12 (~3:1~) port
 60 11   (ore) port
 60  9 (grain) port
120  8 (~3:1~) port
180  7  (wood) port

sierpiński.ps

<< /PageSize [595 842] >> setpagedevice % A4
72 300 div dup scale % 300 DPI
215 215 translate
0 0 moveto

% https://en.wikipedia.org/wiki/Sierpiński_curve#Arrowhead_curve
<<
	/A { /B /- /A /- /B }
	/B { /A /+ /B /+ /A }
	/- { /- }
	/+ { /+ }
>> begin
	[ /A ] 10
	{ [ exch { load exec } forall ] } repeat
end

<<
	/A { 1 0 rlineto }
	/B { 1 0 rlineto }
	/- { -60 rotate }
	/+ {  60 rotate }
>> begin
	dup { load exec } forall
	dup { load exec } forall

	pathbbox exch 4 div exch moveto
	pop pop { load exec } forall

	stroke
end

sprites.ppm

If you ever feel useless, remember the desert port: