src/freetype/autohint/mather.py

   1 #!/usr/bin/env python
   2 #
   3
   4 #
   5 # autohint math table builder
   6 #
   7
   8
   9 # Copyright 1996-2000 by
  10 # David Turner, Robert Wilhelm, and Werner Lemberg.
  11 #
  12 # This file is part of the FreeType project, and may only be used, modified,
  13 # and distributed under the terms of the FreeType project license,
  14 # LICENSE.TXT.  By continuing to use, modify, or distribute this file you
  15 # indicate that you have read the license and understand and accept it
  16 # fully.
  17
  18
  19 import math
  20
  21 ag_pi = 256
  22
  23 def print_arctan( atan_bits ):
  24     atan_base = 1 << atan_bits
  25
  26     print "  static AH_Angle  ag_arctan[1L << AG_ATAN_BITS] ="
  27     print "  {"
  28
  29     count = 0
  30     line  = "   "
  31
  32     for n in range( atan_base ):
  33         comma = ","
  34         if ( n == atan_base - 1 ):
  35             comma = ""
  36
  37         angle = math.atan( n * 1.0 / atan_base ) / math.pi * ag_pi
  38         line  = line + " " + repr( int( angle + 0.5 ) ) + comma
  39         count = count + 1;
  40         if ( count == 8 ):
  41             count = 0
  42             print line
  43             line = "   "
  44
  45     if ( count > 0 ):
  46         print line
  47     print "  };"
  48
  49
  50 # This routine is not used currently.
  51 #
  52 def print_sines():
  53     print "  static FT_Fixed  ah_sines[AG_HALF_PI + 1] ="
  54     print "  {"
  55
  56     count = 0
  57     line  = "   "
  58
  59     for n in range( ag_pi / 2 ):
  60         sinus = math.sin( n * math.pi / ag_pi )
  61         line  = line + " " + repr( int( 65536.0 * sinus ) ) + ","
  62         count = count + 1
  63         if ( count == 8 ):
  64             count = 0
  65             print line
  66             line = "   "
  67
  68     if ( count > 0 ):
  69         print line
  70     print "   65536"
  71     print "  };"
  72
  73
  74 print_arctan( 8 )
  75 print
  76
  77
  78 # END