lily/dimensions-scheme.cc

   1 /*
   2   dimensions-scheme.cc -- implement Dimension handling
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1997--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
   7 */
   8
   9 #include "lily-guile.hh"
  10 #include "dimensions.hh"
  11 #include "warn.hh"
  12
  13 LY_DEFINE (ly_pt, "ly:pt",
  14            1, 0, 0, (SCM num),
  15            "@var{num} printer points.")
  16 {
  17   LY_ASSERT_TYPE (scm_is_number, num, 1);
  18   return scm_from_double (point_constant
  19                           * scm_to_double (num));
  20 }
  21
  22 LY_DEFINE (ly_cm, "ly:cm",
  23            1, 0, 0, (SCM num),
  24            "@var{num} cm.")
  25 {
  26   LY_ASSERT_TYPE (scm_is_number, num, 1);
  27   return scm_from_double (cm_constant
  28                           * scm_to_double (num));
  29 }
  30
  31 LY_DEFINE (ly_inch, "ly:inch",
  32            1, 0, 0, (SCM num),
  33            "@var{num} inches.")
  34 {
  35   LY_ASSERT_TYPE (scm_is_number, num, 1);
  36   return scm_from_double (inch_constant
  37                           * scm_to_double (num));
  38 }
  39
  40 LY_DEFINE (ly_mm, "ly:mm",
  41            1, 0, 0, (SCM num),
  42            "@var{num} mm.")
  43 {
  44   LY_ASSERT_TYPE (scm_is_number, num, 1);
  45   return scm_from_double (mm_constant
  46                           * scm_to_double (num));
  47 }
  48
  49 LY_DEFINE (ly_bp, "ly:bp",
  50            1, 0, 0, (SCM num),
  51            "@var{num} bigpoints (1/72th inch).")
  52 {
  53   LY_ASSERT_TYPE (scm_is_number, num, 1);
  54   return scm_from_double (bigpoint_constant
  55                           * scm_to_double (num));
  56 }