% 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;