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+% This is `skakbase.mf' version 1.0 as of 6/99
+% based on original work by Piet Tutelaers
+% Modified by Torben Hoffmann: smaller pieces and nicer looking knight
+
+% In this file all pieces are defined.
+% The points defining a piece are all in the unitsquare
+% (0,0)--(0,1)--(1,1)--cycle.
+
+
+def g(expr x) = (.5+(x-.5)*.87) enddef;
+def f(expr x,y) = (g(x)+figshift,g(y)+lift) enddef;
+
+def dark_square(expr D) =
+ clearit; L:=min(D/4, 9); delta:=1/L;
+ pickup fine_pen;
+ for i=1 upto min(D/4,9):
+ draw (0,delta*i*D)--(D-delta*i*D,D);
+ draw (delta*i*D,0)--(D,D-delta*i*D);
+ endfor;
+ draw (0,0)--(D,D);
+ enddef;
+
+def erase_square(expr D, col, row) =
+ currentpicture:=board;
+ erase fill (0,0)--(0,1)--(1,1)--(1,0)--cycle scaled D shifted(col*D, row*D);
+ board:=currentpicture;
+ enddef;
+
+def empty_board(expr D) =
+ picture board; path border;
+ border = ((0,0)--(1,0)--(1,1)--(0,1)--cycle);
+ dark_square(D); board:=nullpicture;
+ for i=0 upto M-1:
+ for j=0 upto M-1:
+ if not odd(i+j): addto board also currentpicture shifted (D*i,D*j) fi;
+ endfor
+ endfor;
+ clearit;
+ pickup border_pen;
+ draw border scaled (M*D);
+ addto board also currentpicture;
+ currentpicture:=board;
+ enddef;
+
+% def reflect(text t) =
+% forsuffixes $=t: z$'=z$ reflectedabout (z1,z2); endfor;
+% enddef;
+def reflect(text t) =
+ forsuffixes $=t: x$'=1-x$+2figshift; y$'=y$; endfor;
+ enddef;
+
+def opr(suffix $) = (g(x$+thick#/d#), y$) enddef; % one point right
+def opl(suffix $) = (g(x$-thick#/d#), y$) enddef; % one point left
+def opu(suffix $) = (x$, g(y$+thick#/d#)) enddef; % one point up
+def opd(suffix $) = (x$, g(y$-thick#/d#)) enddef; % one point down
+def opur(suffix $) = f(x$+thick#/d#,y$+thick#/d#) enddef;
+ % one point up and right
+def opul(suffix $) = f(x$-thick#/d#,y$+thick#/d#) enddef;
+ % one point up and left
+
+
+
+vardef K(expr D, col, row) =
+ clearxy;
+ path cross_bar, crown, crown_top, crown_left, crown_right, crown_lower,
+ crown_top_inner, crown_left_inner, crown_right_inner;
+ def moved = scaled D shifted (col*D, row*D) enddef;
+
+ pickup hairline_pen;
+% draw cross
+ z1=f(.5,.96); z2=f(.5,.8); z11=f(.42,.9); reflect(11);
+% cutdraw (z1--z2) moved; cutdraw (z11--z11') moved;
+ draw (z1--z2) moved; draw (z11--z11') moved;
+% top part of crown
+ z3=f(.5,.38); z21=f(.475,.5); z22=f(.45,.575); z23=f(.45,.775);
+ reflect(21,22,23);
+ crown_top= ((z3..z21..z22..z23..z2..z23'..z22'..z21'..z3) & cycle);
+% left and right part
+ z31=z21; z32=z22; z33=f(.32,.67); z34=f(.13,.69); z35=f(.07,.55);
+ z36=f(.13,.45); z37=f(.2,.34);
+ reflect(31, 32, 33, 34, 35, 36, 37);
+ crown_left=(z3..z31..z33..z34..z35..z36..z37);
+ crown_right=(z37'..z36'..z35'..z34'..z33'..z31'..z3);
+% lower part of the crown
+% z6=f(.5,.095); z61=f(.27,.12); z62=f(.2,.15); z63=f(.21,.23);
+ z6=f(.5,.095); z61=(x62,.09); z62=f(.2,.15); z63=f(.21,.23);
+ reflect(61, 62, 63);
+% crown_lower= ((z37--z63) & (z63--z62) & (z62..z61..z6..z61'..z62') &
+ crown_lower= ((z37--z63) & (z63--z62) & (z62..controls z61 and z61'..z62') &
+ (z62'--z63') & (z63'--z37') & (z37'..z3..z37) & cycle);
+% draw contour of crown
+ pickup thin_pen;
+ crown= crown_left & z37..z3..z37' & crown_right & cycle;
+ if background=dark: erase fill crown moved;
+ erase fill crown_top moved;
+ erase fill crown_lower moved;fi;
+ draw crown moved; draw crown_top moved;
+ if color=black:
+ z121=f(.5,.5); z123=f(.45,.675); z102=f(.5,.77);
+ reflect(123);
+ crown_top_inner = (z121{curl 0}..z123..z102..z123'..{curl 0}z121 & cycle);
+ z131=f(.45,.5); z133=f(.32,.64); z134=f(.13,.66); z135=f(.10,.55);
+ z136=f(.16,.45); z137=f(.22,.36); z103=f(.475,.4);
+ crown_left_inner= ((z103..z131..z133..z134..z135..z136..z137)
+ & (z137..{right}z103) & cycle);
+ crown_right_inner=crown_left_inner reflectedabout (z1,z2);
+ fill crown_top_inner moved;
+ fill crown_left_inner moved;
+ fill crown_right_inner moved;
+ fill crown_lower moved;
+ else: draw crown_lower moved;
+ fi;
+% draw inner parts
+ z4=f(.5,.28); z5=f(.5,.21);
+ if color=white:
+ draw (z37..z3..z37') moved;
+ draw (z63..z4..z63') moved;
+ draw (z62..z5..z62') moved;
+ else: pickup thick_pen;
+ erase draw (opr(37)..z3..opl(37')) moved;
+ erase draw (opr(63)..z4..opl(63')) moved;
+ erase draw (opr(62)..z5..opl(62')) moved;
+ fi;
+ enddef;
+
+vardef Q(expr D, col, row) =
+ clearxy;
+ path crown_top, crown, crown_lower;
+ def moved = scaled D shifted (col*D, row*D) enddef;
+
+ pickup thin_pen;
+% top part of crown
+ z1=f(.5,.92); z2=f(.5,.5); z11=f(.42,.46); z12=f(.275,.88);
+ z13=f(.25,.44); z14=f(.075,.8); z15=f(.125,.4);
+ reflect(11,12,13,14,15);
+ crown_top = (z15'--z14'--z13'--z12'--z11'--z1--z11--z12--z13--z14--z15);
+% lower part of the crown
+% z6=f(.5,.0775); z61=f(.25,.1); z62=f(.18,.125); z63=f(.22,y62+1/3(y15-y62));
+ z6=f(.5,.0775); z61=f(.18,0.05); z62=f(.18,.125); z63=(g(.22)+figshift,y62+1/3(y15-y62));
+ z64=(g(.19)+figshift,y62+2/3(y15-y62)); z65=(g(.15)+figshift,y64+1/3(y15-y64));
+ reflect(61,62,63,64,65);
+% crown_lower= ((z15--z64) & (z64--z63) & (z63--z62) &
+ crown_lower= ((z15..z65..z64) & (z64..z63..z62) &
+ (z62..controls z61 and z61'..z62') &
+ (z62'..z63'..z64') & (z64'..z65'..z15'));
+% draw contour of crown
+ crown= (crown_top & crown_lower & cycle);
+ if background=dark:
+ if color=white: erase fill crown moved; fi; fi;
+ if color=white: draw crown moved;
+ forsuffixes $:=1,12,12',14,14':
+ erase fill (fullcircle scaled .1 shifted z$) moved;
+ draw (fullcircle scaled .1 shifted z$) moved; endfor;
+ else: fill crown moved;
+ forsuffixes $:=1,12,12',14,14':
+ fill (fullcircle scaled .1 shifted z$) moved; endfor; fi;
+% draw inner parts
+ z3=(.5+figshift,y5+(y64-y62)); z4=(.5+figshift,y5+(y63-y62)); z5=f(.5,.17);
+ z67=(x62,y62+.7(y62-y61));
+ reflect(67);
+ if color=white: draw (z64..z3..z64') moved; draw (z63..z4..z63') moved;
+% draw (z62..z5..z62') moved;
+ draw (z62..controls z67 and z67'..z62') moved;
+ z21=z11; z22=f(.325,.475); z23=z13; z24=f(.175,.44); z25=z15;
+ reflect(21,22,23,24,25);
+ draw ((z2..z21..z22) & (z22..z23..z24) & (z24--z25)) moved;
+ draw ((z2..z21'..z22') & (z22'..z23'..z24') & (z24'--z25')) moved;
+ else: pickup thick_pen;
+ erase draw (opr(64)..z3..opl(64')) moved;
+ erase draw (opr(63)..z4..opl(63')) moved;
+ z72=f(.25,.14); z73=(x72+0.08,y72+.9(y67-y62));
+ reflect(72,73);
+% erase draw (opr(62)..z5..opl(62')) moved;
+ erase draw (z72..controls z73 and z73'..z72') moved;
+ fi;
+ enddef;
+
+
+vardef N(expr D, col, row) =
+ clearxy;
+ path knight, ear, eye, nose, mouth, neck;
+ def moved = scaled D shifted (col*D, row*D) enddef;
+
+ pickup thin_pen;
+% the knight's contour
+ z1=f(.5,.82); z2=f(.5,.075); z11=f(.45,.93); z12=f(.375,.85);
+ z13=f(.25,.925);
+ z14=f(.26,.8); z15=f(.22,.75); z16=f(.18,.7); z17=f(.18,.66); z18=f(.07,.42);
+ z19=f(.07,.36); z20=f(.14,.3); z21=f(.17,.3); z22=f(.175,.275);
+ z23=f(.225,.28);
+ z24=f(.29,.38); z25=f(.41,.46); z26=f(.49,.51); z27=f(.435,.295);
+% z28=f(.32,.165);
+% z29=(.31,y2); z30=(.93,y2); z31=(.87,.5); z32=(.7,.78);
+ z28=f(.34,.18);
+ z29=(g(.33)+figshift,y2); z30=(g(.92)+figshift,y2); z31=f(.85,.5); z32=f(.73,.72);
+ knight = ((z1--z11--z12--z13--z14) &
+ (z14..z15..z16..z17..z18..z19..z20..z21) &
+ (z21..z22..z23..z24..z25..z26) &
+ (z26..z27..z28..z29) & (z29--z30) &
+ (z30..z31..z32..z1) &cycle);
+% draw contour of knight
+ if color=white: erase fill knight moved;
+ draw knight moved;
+ else: fill knight moved; fi;
+% draw inner parts
+ z4=f(.22,.62); z41=f(.25,.67); z42=f(.29,.705); z43=f(.31,.7); z44=f(.3,.68);
+ eye = (z4..z41..z42..z43 & z43..z44..z4 & cycle);
+ z5=f(.1,.36); z51=f(.1,.39); z52=f(.135,.43); z53=f(.15,.4); z54=f(.13,.38);
+ nose = (z5..z51..z52..z53..z54..z5 &cycle);
+ if color=white: z21'=f(.2,.34); draw (z21'--z21) moved; %mouth
+ z26'=f(.54,.63); draw (z26'..z26{z24-z26}) moved; %neck
+ draw (z12--z14) moved; % ear
+ fill eye moved; fill nose moved;
+ else: erase fill eye moved; erase fill nose moved; fi;
+% z30'=z30 + f(-thick#/d#,thick#/d#); pickup thick_pen
+ z30'=opul(30); pickup thick_pen
+ erase draw (.4[opd(1),z1]..opd(32)..1/2[opl(31),z31]..1/2[z30',z30]) moved; % mane
+ enddef;
+
+vardef B(expr D, col, row) =
+ clearxy;
+ path top, hat, brim, mitre, stole;
+ def moved = scaled D shifted (col*D, row*D) enddef;
+
+ pickup thin_pen;
+% the top circle
+ z1=f(.5,.85); z2=f(.5,.8);
+ top = (fullcircle scaled .1 shifted z1);
+ if color=white: erase fill top moved; draw top moved;
+ else: fill top moved; fi;
+% the hat
+ z3=f(.5,.43); z21=f(.27,.57); z31=f(.35,.4); reflect(21,31);
+ hat = (z31'..z21'..z2{(-1,1)}) & (z2{(-1,-1)}..z21..z31);
+% the brim
+ z4=f(.5,.33); z5=f(.5,.23);
+ z41=f(.32,.28); reflect(41);
+ brim = ((z31--z41) & (z41..z5..z41') & (z41'--z31'));
+% the stole
+ z6=f(.5,.15); z7=f(.5,.3); z61=f(.44,.12); z62=f(.25,.1); z63=f(.15,.05);
+ z64=f(.09,.11); z65=f(.25,.18); z66=f(.44,.2);
+ reflect(61,62,63,64,65,66);
+ stole = ((z7..z66..z65..z64) & (z64--z63) & (z63..z62..z61..z6) &
+ (z6..z61'..z62'..z63') & (z63'--z64') & (z64'..z65'..z66'..z7) &cycle);
+% the mitre
+ mitre = (hat & brim & cycle);
+ if background=dark:
+ if color=white: erase fill mitre moved;
+ erase fill stole moved; fi; fi;
+ if color=black: fill mitre moved; fill stole moved;
+ else: draw mitre moved; draw stole moved;
+ erase fill mitre moved; draw mitre moved; fi;
+
+% inner parts of mitre
+ center:=g(.59); width:=g(.065);
+ if color=white: draw (z31..z3..z31') moved; draw (z41..z4..z41') moved;
+ draw (f(.5,center-width)--f(.5,center+width)) moved;
+ draw (f(.5-width,center)--f(.5+width,center)) moved;
+ else: pickup thick_pen;
+ erase cutdraw (opr(31)..z3..opl(31')) moved;
+ erase cutdraw (opr(41)..z4..opl(41')) moved;
+ erase cutdraw (f(.5,center-width)--f(.5,center+width)) moved;
+ erase cutdraw (f(.5-width,center)--f(.5+width,center)) moved;
+ fi;
+ enddef;
+
+vardef p(expr D, col, row) =
+ clearxy;
+ path pawn;
+ def moved = scaled D shifted (col*D, row*D) enddef;
+
+ pickup thin_pen;
+% the pawn's contour
+% z1=(.5,.9); z2=(.5,.1); z11=(.41,.85); z12=(.46,.73); z13=(.32,.6);
+% z14=(.41,.46); z15=(.3,.4); z16=(.2,.1);
+
+ z1=f(.5,.9);
+ z2=f(.5,.1); z11=f(.41,.85); z12=f(.46,.73); z13=f(.32,.6);
+ z14=f(.41,.46); z15=f(.3,.4); z16=f(.2,.1);
+ reflect(11,12,13,14,15,16);
+ pawn = ((z12'..z11'..z1..z11..z12) &
+ (z12..z13..z14) &
+ (z14..z15..z16) &
+ (z16--z16') &
+ (z16'..z15'..z14') &
+ (z14'..z13'..z12') & cycle);
+
+% draw contour of pawn
+ if background=dark:
+ if color=white: erase fill pawn moved; fi; fi;
+ if color=black: fill pawn moved;
+ else: draw pawn moved; fi;
+ enddef;
+
+% the rook should be shrunk slightly less than the other pieces
+%def g(expr x) = .5+(x-.5)*.9 enddef;
+ def rookscale(expr x) = .5+(x-.5)*.95 enddef;
+ def j(expr x,y) = (rookscale(x)+figshift,rookscale(y)) enddef;
+
+
+vardef R(expr D, col, row) =
+ clearxy;
+ path rook;
+ def moved = scaled D shifted (col*D, row*D) enddef;
+
+ pickup thin_pen;
+% top part of rook
+ z1=j(.5,.86); y15=y14=y11=y1; x15=x16=rookscale(.21)+figshift;
+ x19=x20=rookscale(.225)+figshift; y13=y12=rookscale(.8);
+ y16=rookscale(.725); y17=rookscale(.65); y18=rookscale(.35); y19=rookscale(.26); y20=y21=rookscale(.175); y22=rookscale(.1);
+ x22=x21=rookscale(.175)+figshift; x17=x18=rookscale(.31)+figshift;
+ x13=x14=rookscale(.325)+figshift; x11=x12=rookscale(.43)+figshift;
+ z2=j(.5,.1);
+ reflect(11,12,13,14,15,16,17,18,19,20,21,22);
+ rook = (z11--z12--z13--z14--z15--z16--z17--z18--z19--z20--z21--z22--z22'
+ --z21'--z20'--z19'--z18'--z17'--z16'--z15'--z14'--z13'--z12'--z11'--cycle);
+% draw contour of rook
+ if background=dark:
+ if color=white: erase fill rook moved; fi; fi;
+ if color=white: draw rook moved; else: fill rook moved; fi;
+% draw inner parts
+ if color=white: draw (z16--z16') moved; draw (z17--z17') moved;
+ draw (z18--z18') moved; draw (z19--z19') moved;
+ draw (z20--z20') moved;
+ else: pickup thick_pen;
+ erase draw (opr(16)--opl(16')) moved;
+ erase draw (opr(17)--opl(17')) moved;
+ erase draw (opr(18)--opl(18')) moved;
+ erase draw (opr(19)--opl(19')) moved;
+ erase draw (opr(20)--opl(20')) moved; fi;
+ enddef;
+
+
+
+
+
+
+