% blackboard typefaces by Anthony Phan. % file: mbbromlo.mf (Roman lowercase) % last modification: 25.10.2001. % It should be noticed that most of the work is contained % in the last macros definitions of `mbbbase.mf'. This can % be legitimated by the fact that lowercase letters must be quite % homogeneous. Also, variants should be easily made by % changing few parameters (just for `thorn': from `p' % whose height is `x_height' to 'thorn whose height is % časc_height') or by adding new features (accents, bars...). def horizontal_rules_list= -body_depth,-desc_depth,0.5x_height,x_height,cap_height, asc_height,body_height enddef; use_rule1; iff variant_a: beginchar("a",8u#+2appr#,x_height#,0); "The letter a"; italcorr 0.75x_height#*slant-.5u#; pickup circle.nib; lft x1=apprl+hround 0.2u; rt x3=w-apprr; x3=x4; top y2=h+uo; bot y4=0; y3=0.3[y2+oo-uo,y4]; bot y1=vround max(0.72h,y3); tmp_path:=z4..z3 & elliptic_arc(3,2,1); hbbowl(z2,z3,z4,hthick) tmp_path; x11=x7=x.bowl.mid; lft x9=apprl-ho; x8=0.5[x9,0.5[x.bowl.mid,x4]]; if ab_down_factor>0: bot y8=-oo; y7=ab_down_factor[y4,bot h]; else: y8=y7=y4; fi top y11=min(vround 0.7h,top y3); slope:=(y11-y4)/16u; ellipse_set(8,9,10,11); tmpp_path:=z7 if ab_down_factor>0: down_to_left else: .. fi z8 left_to_up z9...z10---z11; if straight_bowl: bbbowl(z11,z9,z8,hThick) tmpp_path; else: begingroup interim superness:=superbowl; draw 0.5[z10,z11]{z10-z11}...(x9+hThick,y9) down_to_right z8; endgroup; fi draw tmp_path; draw tmpp_path; pickup square.nib; draw z4..z.bowl.bot; square_end1(z1-z1'); labels(range 1 thru 11); math_fit(0,0); endchar; iff not variant_a: beginchar("a",8u#+2appr#,x_height#,0); "The letter a"; italcorr x_height#*slant-.5u#; complete_left_lower(ab_down_factor,ab_up_factor); math_fit(0,0); endchar; beginchar("b",8u#+2appr#,asc_height#,0); "The letter b"; italcorr 0.6x_height#*slant+ho#-.5u#; complete_right_lower(ab_down_factor,ab_up_factor); math_fit(0,0); endchar; beginchar("c",7u#+2appr#,x_height#,0); "The letter c"; italcorr x_height#*slant-.5u#; pickup circle.nib; x1=x5=w-apprr; lft x3=apprl-ho; top y2=h+uo; bot y4=-oo; y3=0.5[y4,y2]; y1=0.707[y3,y2]; y5=0.707[y3,y4]; tmp_path:=reverse elliptic_arc(3,2,1)&elliptic_arc(3,4,5); bbbowl(z2,z3,z4,hThick) tmp_path; draw tmp_path; square_end1(z1-z1'); square_end5(z5-z5'); labels(1,1',2,3,4,5,5'); math_fit(0,0); endchar; beginchar("d",8u#+2appr#,asc_height#,0); "The letter d"; italcorr asc_height#*slant-.5u#; complete_left_lower(ab_down_factor,ab_up_factor); math_fit(0,0); endchar; beginchar("e",8u#+2appr#,x_height#,0); "The letter e"; italcorr 0.6x_height#*slant+ho#-.5u#; numeric t; pickup circle.nib; rt x1=w-apprr+ho; lft x3=apprl-ho; x2=x4=0.5[x1,x3]; top y2=h+uo; bot y4=-oo; y1=y3=good.y(0.5[y2,y4]); tmp_path:=superellipse(z1,z2,z3,z4,superness); t=xpart(tmp_path intersectiontimes (bot(w/2,0.25[y4,y2])..bot(w,0.25[y4,y2]))); draw subpath (0,t) of tmp_path; z5=point t of tmp_path; bbbowl(z2,z3,z4,hThick) tmp_path; z6=(x.bowl.mid,y1); hbbowl(z2,z1,z1,hThick) tmp_path; x6r=x6l=x6; x1r=x1; x1m=x1l=rt x1; y6r=y1r=top y1; y1m=y1; y1l=y6l=bot y1; fill z1l--z1m--z1r--z6r--z6l--cycle; square_end5(direction t of tmp_path); labels(1,1r,1l,1m,2,3,4,5,6,6l,6r); math_fit(0,0); endchar; beginchar("f",hthick#+thin#+u#+2appr#,asc_height#, if variant_f: desc_depth# else: 0 fi); "The letter f"; italcorr asc_height#*slant+1.5u#; pickup circle.nib; lft x1=apprl; x2-x1=hthick; x3=x2; x4-x3=hround 2u; top y3=top y4=x_height; draw z3..z4; complete_f_stroke(1,2,hround 3u,true); square_end4(right); labels(3,4); math_fit(0,0); endchar; beginchar("g",8u#+2appr#,x_height#,desc_depth#); "The letter g"; italcorr x_height#*slant-.5u#; if variant_g: numeric t; pickup circle.nib; bbcircle1(apprl,w-apprr,x_height+uo,hround 0.25h); draw last_path; bbbowl(z1b,z1a,z1d,hthick) last_path; bbbowl(z1b,z1c,z1d,hthick) last_path; rt x3=w-apprr+hround 0.5u; top y3=h; y2=0.5[y1b,y3]; t=xpart(last_path intersectiontimes ((x1b,y2)..(x1a,y2))); z2=point t of last_path; slope:=-d/20u; lft x4l=lft x10+ho=apprl; rt x8r=w-apprr+ho; x4r-x4l=x8r-x8l=hround 0.5[thin,thick]; x6=x9=x1b; y6=0; bot y9=-d-oo; ortho_penpos6(thick,(-1,-slope)); forsuffixes $=l,r: ellipse_set(bowl.bot,4$,5$,6$); ellipse_set(9,8$,7$,6$); draw z.bowl.bot left_to_down z4$...z5$---z7$...z8$ down_to_left z9; endfor; y10=0.6[y9,y5l]; draw z2{-direction t of last_path}...z3{right}; draw z9 left_to_up z10 up_to_right z5l; square_end3(right); labels(2,3,9,10); penlabels(4,5,6,7,8); else: g_bar:=true; complete_left_lower(ab_down_factor,ab_up_factor); fi math_fit(0,0); endchar; beginchar("h",8u#+2appr#,asc_height#,0); "The letter h"; italcorr 0.75x_height#*slant-.5u#; complete_n; math_fit(0,0); endchar; beginchar("i",hthick#+thin#+2appr#, min(asc_height#,10/7x_height#+0.5dot_size#),0); "The letter i"; if square_dots: italcorr charht*slant-.5u#; else: italcorr (charht-0.4dot_size#)*slant-.5u#; fi center_bar(1,2); x1=x3=x5; x2=x4=x5'; bot y1=bot y2=0; top y3=top y4=x_height; top y5'=h; bot y5=h-dot_size; dot(5,5'); pickup square.nib; draw z1--z2--z4--z3--cycle; labels(1,2,3,4); math_fit(0,0); endchar; beginchar("j",hthick#+thin#+2appr#, min(asc_height#,10/7x_height#+0.5dot_size#),desc_depth#); "The letter j"; if square_dots: italcorr charht*slant-.5u#; else: italcorr (charht-0.4dot_size#)*slant-.5u#; fi pickup circle.nib; y1=0; top y2=top y3=x_height; rt x1=rt x2=w-apprr; x2-x3=hthick; x5'=x2; x3=x5; top y5'=h; bot y5=h-dot_size; draw z2..j_curve1(4,x3,true); draw z3..z4; dot(5,5'); pickup square.nib; draw z2..z3; labels(1,2,3,4); math_fit(0,0); endchar; beginchar("k",9u#+2appr#,asc_height#,0); "The letter k"; italcorr x_height#*slant-.5u#; pickup circle.nib; lft x1=lft x3=apprl; x2-x1=hthick; x4=x5=x2; bot y1=0; y2=y1; top y3=h; y4=y3; x6r=w-apprr; y6r=x_height; y5=0.4*x_height; adjust_slanted_bar(5,6r,5a,6)(0.5thin,-1); z6-z6l=z6r-z6; ortho_penpos5(thin,z6-z5); z7=(w-apprr,0); top z8b=(1[x3,x4],x_height); adjust_slanted_bar(8b,7,7b,8)(thick,1); z9=whatever[z5,z6]; z9=whatever[z7,z7b]; z10=whatever[z5,z6]; z10=whatever[z8,z8b]; y7a-y7=y8a-y8=thin; z7a=whatever[z7,z7b]; z8a=whatever[z8,z8b]; penpos7(diag_width(thin,z7b-z7),0); penpos8(diag_width(thin,z8b-z8),0); ortho_penpos9(thin, z7b-z7); ortho_penpos10(thin, z8b-z8); pickup square.nib; draw z1--z2--z4--z3--cycle; penstroke z5e..z6e; penstroke z7e..z9e; penstroke z8e..z10e; fill z7--z8--z8a--z7a--cycle; labels(1,2,3,4,5a,7a,7b,8a,8b); penlabels(5,6,7,8,9,10); math_fit(0,0); endchar; beginchar("l",hthick#+thin#+2appr#,asc_height#,0); "The letter l"; italcorr asc_height#*slant-.5u#; center_bar(1,2); x1=x3; x2=x4; bot y1=bot y2=0; top y3=top y4=h; pickup square.nib; draw z1--z2--z4--z3--cycle; labels(1,2,3,4); math_fit(0,0); endchar; beginchar("m",16u#-hthick#-thin#+2appr#,x_height#,0); "The letter m"; italcorr 0.75x_height#*slant-.5u#; if hmn_factor > 0 : center_bar(0,8); bot y1=0; y0=y1=y2=y8=y12; top y3=top y4=h; top y6=top y10=h+oo; y11=0.3[y10,y12]; y5=y9=hmn_factor[y4,y2]; y7=max(y9,y11); lft x1=lft x3=apprl; rt x11=rt x12=w-apprr; x7=x8=x9; x2=x4=x5=x1+hthick; x6=0.5[x5,x7]; x10=0.5[x9,x11]; tmp_path:=z5 up_to_right z6 right_to_down z7..z8; tmpp_path:=z9 up_to_right z10 right_to_down z11..z12; draw tmp_path; draw tmpp_path; hbbowl(z6,z7,z8,hthick) tmp_path; hbbowl(z10,z11,z12,hthick) tmpp_path; pickup square.nib; draw z1--z2--z4--z3--cycle; draw z0..z8; draw z12..z.bowl.bot; labels(1,2,3,4,5,6,7,8,9,10,11,12); else: center_bar(8,11); x8=x9; x10=x11; bot y1=0; y1=y2=y7=y9=y10; top y3=h; y3=y4=y5=y8=y11; y6=0.7[y7,y5]; lft x1=lft x3=apprl; rt x6=rt x7=w-apprr; x5=0.5[x11,x6]; x2-x1=x4-x3=hthick; tmp_path:=z3..z5 right_to_down z6..z7; draw tmp_path; hbbowl(z5,z6,z7,hthick) tmp_path; draw z8..z9; draw z10..z11; pickup square.nib; draw z4--z2--z1--z3; draw z9..z10; draw z7..z.bowl.bot; labels(1,2,3,4,5,6,7,8,9,10,11); fi math_fit(0,0); endchar; beginchar("n",8u#+2appr#,x_height#,0); "The letter n"; italcorr 0.75x_height#*slant-.5u#; complete_n; math_fit(0,0); endchar; beginchar("o",8u#+2appr#,x_height#,0); "The letter o"; italcorr 0.6x_height#*slant+ho#-.5u#; pickup circle.nib; bbcircle1(apprl-ho,w-apprr+ho,x_height+uo,-oo); draw last_path; bbbowl(z1b,z1a,z1d,hThick) last_path; bbbowl(z1b,z1c,z1d,hThick) last_path; math_fit(0,0); endchar; beginchar("p",8u#+2appr#,x_height#,desc_depth#); "The letter p"; italcorr 0.6x_height#*slant+ho#-.5u#; complete_right_lower(ab_down_factor,ab_up_factor); math_fit(0,0); endchar; beginchar("q",8u#+2appr#,x_height#,desc_depth#); "The letter q"; italcorr x_height#*slant-.5u#; complete_left_lower(ab_down_factor,ab_up_factor); math_fit(0,0); endchar; beginchar("r",5.5u#+2appr#,x_height#,0); "The letter r"; italcorr x_height#*slant+.5u#; pickup circle.nib; lft x1=lft x3=apprl; x5=x2=x4=x1+hthick; bot y1=bot y2=0; top y3=h; y3=y4=y6=y7; rt x7=hround(w-apprr+u); x6=0.15[x7,x2]; y5=0.3[y2,y4]; draw z5 up_to_right z6..z7; pickup square.nib; draw z1--z2--z4--z3--cycle; square_end7(right); labels(1,2,3,4,5,6,7); math_fit(0,0); endchar; beginchar("s",7u#+2appr#,x_height#,0); "The letter s"; italcorr x_height#*slant+ho#-1.1u#; pickup circle.nib; slope:=-h/24u; y5=0.52[y8,y2]; top y2=h+uo; bot y8=-oo; y2-y1=vround 0.12h; y9-y8=vround 0.175h; lft x3l=lft x9-(0.5thin*(sqrt2-1))=apprl-ho; rt x7r=w-apprr+ho; x7r-x1=hround 0.6u+(0.5thin*(sqrt2-1)); x2=x5=x8=0.5[apprl,w-apprr]; x3r-x3l=x7r-x7l=hround 0.5[thin,ess]; ortho_penpos5(ess,(-1,-slope)); forsuffixes $=r,l: ellipse_set(2,3.$,4.$,5.$); ellipse_set(8,7.$,6.$,5.$); endfor z1'-z1=(z2-z1)xscaled 1/3; z9-z9'=(z9-z8)xscaled 0.3; draw z1{z1'-z1}...z2 left_to_down z3l...z4l ---z6l...z7l down_to_left z8; draw z2 left_to_down z3r...z4r ---z6r...z7r down_to_left z8...{z9-z9'}z9; square_end1(z1-z1'); square_end9(z9-z9'); labels(1,1',2,8,9,9'); penlabels(3,4,5,6,7); math_fit(0,0); endchar; beginchar("t",6u#+2appr#,min(asc_height#,10/7x_height#),0); "The letter t"; italcorr x_height#*slant-0.5thin#-.5u#; pickup circle.nib; % the "t" part rt x1=rt x2=w-apprr; x3=0.5[x2,x4]; lft x4=lft x5=apprl; rt x7=floor x1; top y6=top y7=x_height; bot y3=-oo; top y5=h; y2=y4=0.3[y3,y6]; top y1=max(vround 0.42x_height,top y2); tmp_path:=z1..z2 down_to_left z3 left_to_up z4..z5; draw tmp_path; hbbowl(z3,z4,z5,hthick) tmp_path; x6=rt x.bowl.mid; pickup square.nib; draw z6..z7; draw z5..z.bowl.bot; square_end1(up); labels(1,2,3,4,5,6,7); math_fit(0,0); endchar; beginchar("u",8u#+2appr#,x_height#,0); "The letter u"; italcorr x_height#*slant-.5u#; complete_u(uy_factor); math_fit(0,0); endchar; beginchar("v",7.6u#+2appr#,x_height#,0); "The letter v"; italcorr x_height#*slant; complete_AV(-1,apprl-0.5u,w-apprr+0.5u); math_fit(0,0); endchar; beginchar("w",13u#+2appr#,x_height#,0); "The letter w"; italcorr x_height#*slant-0.5u#;% not perfect... pickup circle.nib; x1=apprl; x12=w-apprr; x6=x7=0.5[x1,x12]; x5-x2=hthick; x2-x1=x7-x5=x8-x7=x12-x11; y1=y3=y6=y7=y9=y12=h; y2=y5=y8=y11=bot y4a=0; a:=diag_width(1,z1-z2); penpos1(thin*a,0); penpos2(thin*a,0); penpos3(thin*a,0); penpos8(thin*a,0); penpos9(thin*a,0); x3-x1=x9-x7=thick*a; z4a-z3=z10a-z9=whatever*(z2-z1); z4=whatever[z3,z4a]; z10=whatever[z9,z10a]; if x4a>x5: z4=whatever[z5,z6]; z10=whatever[z11,z12]; else: bot y4=bot y10=0; fi ortho_penpos4(thin,z3-z4a); ortho_penpos10(thin,z9-z10a); a:=diag_width(thin,z6-z5); penpos5(a,0); penpos11(a,0); penpos12(a,0); z6-z6l=z5-z5l; z7r-z7=z8r-z8; z6r=whatever[z7,z8]; z6r-z5r=whatever*(z6-z5); z7l=whatever[z5,z6]; z7l-z8l=whatever*(z7-z8); y1-y1a=thin; z1a=whatever[z1,z2]; z1-z1a=z2a-z2=z3-z3a=z7-z7a=z8a-z8=z9-z9a; y5a-y5=thin; z5a=whatever[z5,z6]; z5a-z5=z11a-z11; penstroke z1e..z2e; penstroke z3e..z4e; penstroke z9e..z10e; penstroke z11e..z12e; fill z5r--z5l--z6l--z6--z6r--cycle; fill z8r--z8l--z7l--z7--z7r--cycle; fill z1--z3--z3a--z1a--cycle; fill z2--z5--z5a--z2a--cycle; fill z7--z9--z9a--z7a--cycle; fill z8--z11--z11a--z8a--cycle; penlabels(1,2,3,4,5,6,7,8,9,10,11,12); labels(1a,2a,3a,4a,5a,8a,9a,10a,11a); math_fit(0,0); endchar; beginchar("x",8.8u#+2appr#,x_height#,0); "The letter x"; italcorr x_height#*slant-0.5u#; complete_X(0.3u); math_fit(0,0); endchar; beginchar("y",8u#+2appr#,x_height#,desc_depth#); "The letter y"; italcorr x_height#*slant-.5u#; if variant_y: y1=y3=y4=h; y5=0; y2=-d; x3=apprl; x1=w-apprr; x5=0.5[x3,x1]; z2=whatever[z1,z5]; a:=diag_width(1,z3-z5); x4-x3=a*thick; penpos3(thin*a,0); penpos4(thin*a,0); penpos1(diag_width(thin,z1-z2),0); penpos2(diag_width(thin,z1-z2),0); z6=whatever[z1,z2]; z6-z4=whatever*(z5-z3); y3-y3a=thin; z3a-z3=z4a-z4=whatever*(z5-z3); z5l=whatever[z1,z2]; z5l-z3l=whatever*(z5-z3); z6r-z6=z6-z6l=z5r-z5=z5-z5l; penstroke z1e..z2e; penstroke z3e..z5e; penstroke z4e..z6e; fill z3--z4--z4a--z3a--cycle; penlabels(1,2,3,4,5,6); labels(3a,4a); else: g_bar:=true; complete_u(uy_factor); fi math_fit(0,0); endchar; beginchar("z",7.6u#+2appr#,x_height#,0); "The letter z"; italcorr x_height#*slant-.5u#; pickup circle.nib; z1l=(apprl-hround 0.15u,0); z2l=(w-apprr+hround 0.1u,0); z3r=(apprl,h); z4r=(w-apprr,h); penpos1(thin,90); penpos2(thin,90); penpos3(thin,90); penpos4(thin,90); z5l=z1r; z8r=z4l; adjust_slanted_bar(5l,8r,6r,7l)(thick+thin,-1); a:=diag_width(thin,z8r-z6r); penpos5(a,0); penpos6(a,0); penpos7(a,0); penpos8(a,0); penstroke z1e..z2e; penstroke z3e..z4e; penstroke z5e..z7e; penstroke z6e..z8e; penlabels(1,2,3,4,5,6,7,8); math_fit(0,0); endchar; iff known bbdotless_i: beginchar(bbdotless_i,max(hthick#+thin#,4u#)+2appr#,x_height#,0); "The dotless i"; italcorr x_height#*slant-.5u#;% to be corrected ? answer: no. pickup circle.nib; center_bar(1,2); x1=x3; x2=x4; bot y1=bot y2=0; top y3=top y4=h; pickup square.nib; draw z1--z2--z4--z3--cycle; labels(1,2,3,4); math_fit(0,0); endchar; iff known bbdotless_j: beginchar(bbdotless_j,max(hthick#+thin#,4u#)+2appr#, x_height#,desc_depth#); "The dotless j"; italcorr x_height#*slant-.5u#;% to be corrected ? answer: no. pickup circle.nib; center_bar(3,2); x1=x2; y1=0; top y2=top y3=h; draw z2..j_curve1(4,x3,true); draw z3..z4; pickup square.nib; draw z2..z3; labels(1,2,3,4); math_fit(0,0); endchar;