new file

[lilypond.git] / lily / mensural-ligature.cc

diff --git a/lily/mensural-ligature.cc b/lily/mensural-ligature.cc
index 781c5b3cc3ee8360a8eb0ddd48942964d3389df1..a70eeaf113a3556d10e5cf241cdaaf34a7a76411 100644 (file)
--- a/lily/mensural-ligature.cc
+++ b/lily/mensural-ligature.cc
@@ -1,16 +1,15 @@
 /*
   mensural-ligature.cc -- implement Mensural_ligature
-  
+
   source file of the GNU LilyPond music typesetter
-  
+
   (c) 2002--2005 Juergen Reuter <reuter@ipd.uka.de>,
-                Pal Benko <benkop@freestart.hu>
+  Pal Benko <benkop@freestart.hu>
 */
 
-#include "mensural-ligature.hh"
-
 #include <math.h>
 
+#include "mensural-ligature.hh"
 #include "item.hh"
 #include "font-interface.hh"
 #include "lookup.hh"
@@ -29,46 +28,60 @@ brew_flexa (Grob *me,
            Real interval,
            bool solid,
            Real width,
-           Real thickness)
+           Real vertical_line_thickness)
 {
   Real staff_space = Staff_symbol_referencer::staff_space (me);
-  Real height = 0.6 * staff_space;
-  Stencil stencil;
-
   Real slope = (interval / 2.0 * staff_space) / width;
 
   // Compensate optical illusion regarding vertical position of left
   // and right endings due to slope.
-  Real ypos_correction = -0.1*staff_space * sign (slope);
-  Real slope_correction = 0.2*staff_space * sign (slope);
-  Real corrected_slope = slope + slope_correction/width;
+  Real ypos_correction = -0.1 * staff_space * sign (slope);
+  Real slope_correction = 0.2 * staff_space * sign (slope);
+  Real corrected_slope = slope + slope_correction / width;
 
-  if (solid) // this will come handy for colorated flexae
+  Stencil stencil;
+  if (solid) // colorated flexae
     {
-      Stencil solid_head =
-       Lookup::beam (corrected_slope, width, height, 0.0);
+      Stencil solid_head
+       = Lookup::beam (corrected_slope, width, staff_space, 0.0);
       stencil.add_stencil (solid_head);
     }
   else // outline
     {
-      Stencil left_edge =
-       Lookup::beam (corrected_slope, thickness, height, 0.0);
+      /*
+       The thickness of the horizontal lines of the flexa shape
+       should be equal to that of the horizontal lines of the
+       neomensural brevis note head (see mf/parmesan-heads.mf).
+      */
+      Real const horizontal_line_thickness = staff_space * 0.35;
+
+      // URGH!  vertical_line_thickness is adjustable (via thickness
+      // property), while horizontal_line_thickness is constant.
+      // Maybe both should be adjustable independently?
+
+      Real height = staff_space - horizontal_line_thickness;
+
+      Stencil left_edge
+       = Lookup::beam (corrected_slope, vertical_line_thickness, height, 0.0);
       stencil.add_stencil (left_edge);
 
-      Stencil right_edge =
-       Lookup::beam (corrected_slope, thickness, height, 0.0);
-      right_edge.translate_axis (width-thickness, X_AXIS);
-      right_edge.translate_axis (corrected_slope * (width-thickness), Y_AXIS);
+      Stencil right_edge
+       = Lookup::beam (corrected_slope, vertical_line_thickness, height, 0.0);
+      right_edge.translate_axis (width - vertical_line_thickness, X_AXIS);
+      right_edge.translate_axis ((width - vertical_line_thickness) *
+                                corrected_slope, Y_AXIS);
       stencil.add_stencil (right_edge);
 
-      Stencil bottom_edge =
-       Lookup::beam (corrected_slope, width, thickness, 0.0);
-      bottom_edge.translate_axis (-0.5*height, Y_AXIS);
+      Stencil bottom_edge
+       = Lookup::beam (corrected_slope, width,
+                       horizontal_line_thickness, 0.0);
+      bottom_edge.translate_axis (-0.5 * height, Y_AXIS);
       stencil.add_stencil (bottom_edge);
 
-      Stencil top_edge =
-       Lookup::beam (corrected_slope, width, thickness, 0.0);
-      top_edge.translate_axis (+0.5*height, Y_AXIS);
+      Stencil top_edge
+       = Lookup::beam (corrected_slope, width,
+                       horizontal_line_thickness, 0.0);
+      top_edge.translate_axis (+0.5 * height, Y_AXIS);
       stencil.add_stencil (top_edge);
     }
   stencil.translate_axis (ypos_correction, Y_AXIS);
@@ -101,8 +114,8 @@ internal_brew_primitive (Grob *me)
     {
       delta_pitch = robust_scm2int (me->get_property ("delta-pitch"),
                                    0);
-      width =
-       robust_scm2double (me->get_property ("flexa-width"), 2.0 * staff_space);
+      width
+       = robust_scm2double (me->get_property ("flexa-width"), 2.0 * staff_space);
     }
   if (primitive & MLP_SINGLE_HEAD)
     {
@@ -134,8 +147,8 @@ internal_brew_primitive (Grob *me)
       return Stencil ();
     }
 
-  Real blotdiameter =
-    (me->get_layout ()->get_dimension (ly_symbol2scm ("blotdiameter")));
+  Real blotdiameter
+    = (me->get_layout ()->get_dimension (ly_symbol2scm ("blotdiameter")));
 
   if (primitive & MLP_STEM)
     {
@@ -190,7 +203,7 @@ internal_brew_primitive (Grob *me)
   if (primitive & MLP_FLEXA)
     {
       pos += delta_pitch;
-      add_ledger_lines(me, &out, pos, 0.5*delta_pitch, ledger_take_space);
+      add_ledger_lines (me, &out, pos, 0.5 * delta_pitch, ledger_take_space);
     }
 #endif