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Text File  |  1995-03-10  |  4.8 KB  |  122 lines
  1. %%% ====================================================================
  2. %%%  @METAFONT-file{
  3. %%%     author-1        = "Jeremy Gibbons",
  4. %%%     author-2        = "Alan Jeffrey",
  5. %%%     version         = "1.1",
  6. %%%     date            = "02 June 1992",
  7. %%%     time            = "15:06:36 BST",
  8. %%%     filename        = "stmaryba.mf",
  9. %%%     address-1       = "Department of Computer Science
  10. %%%                        University of Aukland
  11. %%%                        Private Bag
  12. %%%                        Aukland
  13. %%%                        New Zealand",
  14. %%%     address-2       = "School of Cognitive and Computing Sciences
  15. %%%                        University of Sussex
  16. %%%                        Brighton BN1 9QH
  17. %%%                        UK",
  18. %%%     telephone-1     = "+64 9 373 7599 x 5120",
  19. %%%     telephone-2     = "+44 273 606755 x 3238",
  20. %%%     FAX-1           = "+64 9 373 7453",
  21. %%%     FAX-2           = "+44 273 678188",
  22. %%%     checksum        = "49457 121 567 4939",
  23. %%%     email-1         = "jeremy@cs.aukuni.ac.nz",
  24. %%%     email-2         = "alanje@cogs.sussex.ac.uk",
  25. %%%     codetable       = "ISO/ASCII",
  26. %%%     keywords        = "metafont symbols math fonts",
  27. %%%     supported       = "yes",
  28. %%%     abstract        = "This is part of the metafont program for
  29. %%%                        the St Mary's Road symbol font.",
  30. %%%     docstring       = "This is part of the metafont program for
  31. %%%                        the St Mary's Road symbol font.  The font
  32. %%%                        contains a number of mathematical
  33. %%%                        characters which are not present in the
  34. %%%                        standard TeX and AMS symbol fonts.
  35. %%%
  36. %%%                        It is described in stmaryrd.tex.
  37. %%%
  38. %%%                        Copyright 1992 Jeremy Gibbons and Alan Jeffrey.
  39. %%%
  40. %%%                        The checksum field above contains a CRC-16
  41. %%%                        checksum as the first value, followed by the
  42. %%%                        equivalent of the standard UNIX wc (word
  43. %%%                        count) utility output of lines, words, and
  44. %%%                        characters.  This is produced by Robert
  45. %%%                        Solovay's checksum utility.",
  46. %%%     package         = "St Mary's Road",
  47. %%%     dependencies    = "none",
  48. %%%  }
  49. %%% ====================================================================
  50. %%%
  51. %%% 20 May 1991, v1.0: Created the font out of alans.mf and galileo.mf.
  52. %%%
  53. %%% 2 Jun 1992, v1.1: added the headers.
  54.  
  55. % This is the base file for the St Mary's Road symbol font, stmaryrd.mf.
  56.  
  57. % The following stolen from the AMS bsymbols.mf file:
  58.  
  59. def char_negate(suffix c,t,b) = %c is center point; t is top point; b is bottom
  60. pickup rule.nib;
  61. w-x.t=x.b; y.t-y.c=y.c-y.b; draw z.t--z.b;
  62. penlabels(t,c,b); enddef;
  63. def char_center(suffix c) = % find center of type character
  64. x.c=w/2; y.c=.5[-d,h]; enddef;
  65.  
  66. % The command to draw semantic brackets:
  67.  
  68. def left_semantic_bracket(expr breadth,do_top,do_bot) =
  69.  pickup crisp.nib;
  70.  numeric thickness; thickness=hround breadth;
  71.  pos1(thickness,0); pos2(thickness,0);
  72.  top y1=h; bot y2=1-d; lft x1l=lft x2l=hround(2.5u-.5thickness);
  73.  filldraw stroke z1e--z2e;  % stem1
  74.  pos3(thickness,90); pos4(thickness,90);
  75.  pos5(thickness,90); pos6(thickness,90);
  76.  x3=x5=x1l; rt x4=rt x6=hround(w-.75u+.5thickness);
  77.  y3r=y4r=y1; y5l=y6l=y2;
  78.  if do_top: filldraw stroke z3e--z4e; fi  % upper bar
  79.  if do_bot: filldraw stroke z5e--z6e; fi  % lower bar
  80.  pos7(thickness,0); pos8(thickness,0);
  81.  y7=y1; y8=y2; x7=x8=x1+hround(0.5(w - 3.25u));
  82.  filldraw stroke z7e--z8e;  % stem2
  83.  penlabels(1,2,3,4,5,6,7,8); enddef;
  84.  
  85. def right_semantic_bracket(expr breadth,do_top,do_bot) =
  86.  pickup crisp.nib;
  87.  numeric thickness; thickness=hround breadth;
  88.  pos1(thickness,0); pos2(thickness,0);
  89.  top y1=h; bot y2=1-d; rt x1r=rt x2r=hround(w-2.5u+.5thickness);
  90.  filldraw stroke z1e--z2e;  % stem1
  91.  pos3(thickness,90); pos4(thickness,90);
  92.  pos5(thickness,90); pos6(thickness,90);
  93.  x3=x5=x1r; lft x4=lft x6=hround(.75u-.5thickness);
  94.  y3r=y4r=y1; y5l=y6l=y2;
  95.  if do_top: filldraw stroke z3e--z4e; fi  % upper bar
  96.  if do_bot: filldraw stroke z5e--z6e; fi  % lower bar
  97.  pos7(thickness,0); pos8(thickness,0);
  98.  y7=y1; y8=y2; x7=x8=x1-hround(0.5(w - 3.25u));
  99.  filldraw stroke z7e--z8e;  % stem2
  100.  penlabels(1,2,3,4,5,6,7,8); enddef;
  101.  
  102. % The command to draw a circle (with free symmetry hacks):
  103.  
  104. def begincircle (expr n) =
  105.    beginarithchar(n);
  106.       pickup rule.nib;
  107.       if .5w <> good.x .5w: change_width; fi
  108.       lft x6=hround u-eps; x2=w-x6; y2=math_axis; y8-y2 = .5(x2-x6);
  109.       circle_points; draw_circle  % circle
  110. enddef;
  111.  
  112. % And to draw a box (with free symmetry hacks):
  113.  
  114. def beginbox (expr n) =
  115.    beginarithchar(n);
  116.       pickup rule.nib;
  117.       if .5w <> good.x .5w: change_width; fi
  118.       lft x1=hround 1.5u-eps; x2=w-x1; x3=x2; x4=x1;
  119.       y1-y4 = x2-x1; .5[y1,y4]=math_axis; y1=y2; y3=y4;
  120.       draw z1--z2--z3--z4--cycle; % box
  121. enddef
  122.