X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=mf%2Ffeta-arrow.mf;h=a89a8b1d12184a6dd90e067f79d93b83b6fd6cb1;hb=b78541e04e7c3d45220286f233938461d0ca8ed7;hp=6a32af187ebc18b0b69fb39002ec0050f024b645;hpb=3032301cc8609347d997cd4367aa7ab055196e80;p=lilypond.git

diff --git a/mf/feta-arrow.mf b/mf/feta-arrow.mf
index 6a32af187e..a89a8b1d12 100644
--- a/mf/feta-arrow.mf
+++ b/mf/feta-arrow.mf
@@ -3,32 +3,34 @@
 %
 % source file of the GNU LilyPond music typesetter
 %
-% (c) 2005 Han-Wen Nienhuys <hanwen@xs4all.nl>
-%
-
-
+% (c) 2005--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
 
 fet_begingroup ("arrowheads");
 
+%
+% To consider: we could put arrow heads at their real Unicode locations.
+%
 
 %
-% Setup paths for upper half of arrow head pointing right. 
-% CLOSE_PATH is for a closed arrow, OPEN_PATH is for the open arrow 
-% OPEN_TENSION sets the tension for the part which forms the path in OPEN_PATH
-% 
+% Set up paths for upper half of arrow head pointing right.
+% CLOSE_PATH is for a closed arrow, OPEN_PATH is for the open arrow.
+% OPEN_TENSION sets the tension for the part which forms the path in
+% OPEN_PATH.
+%
+
 def set_arrow_paths (expr width, height, open_tension, arrowlinethickness) =
-	save pat, finalpath,
-		tip_angle_o, tip_angle_c, tip_dir_c, tip_dir_o,
-		indent;
+	save pat, finalpath;
+	save tip_angle_o, tip_angle_c, tip_dir_c, tip_dir_o;
+	save indent;
 	path pat, open_path, close_path;
 	pair tip_dir_o, tip_dir_c;
 
 	pickup pencircle scaled arrowlinethickness;
 
-	indent = linethickness/2;
+	indent = linethickness / 2;
 
 	lft x1 = -width;
-	rt x2 = 0;
+	x2 = 0;
 	top y1 = height;
 	y2 = 0;
 
@@ -36,8 +38,8 @@ def set_arrow_paths (expr width, height, open_tension, arrowlinethickness) =
 	y5 = 0;
 	x5 = x4 + indent;
 
-	pat := z1 .. tension open_tension .. z2{right};
-
+	pat := z1
+	       ..tension open_tension.. z2{right};
 	penpos2 (arrowlinethickness, 90);
 	tip_dir_o := direction 0.0 of pat;
 	tip_angle_o := angle (tip_dir_o);
@@ -45,10 +47,15 @@ def set_arrow_paths (expr width, height, open_tension, arrowlinethickness) =
 	z3 = z1;
 	penpos3 (arrowlinethickness, tip_angle_o);
 
-	open_path := z1r{tip_dir_o} .. z2r{right}
-		.. z2l{left} .. z1l{-tip_dir_o} .. z3l .. cycle;
+	open_path := z1r{tip_dir_o}
+		     .. z2r{right}
+		     .. z2l{left}
+		     .. z1l{-tip_dir_o}
+		     .. z3l
+		     .. cycle;
 
-	pat := z4 .. z5{down};
+	pat := z4
+	       .. z5{down};
 	tip_dir_c := direction 0.0 of pat;
 	tip_angle_c := angle (tip_dir_c);
 	penpos4 (arrowlinethickness, 90+ tip_angle_c);
@@ -56,82 +63,105 @@ def set_arrow_paths (expr width, height, open_tension, arrowlinethickness) =
 	z6 = z5;
 	penpos6 (arrowlinethickness, 90);
 
-	close_path := z4l{tip_dir_c} .. z5l{down} .. z6l{right}
-		.. z2l{right} .. z2r{left}
-		.. tension open_tension 
-		.. z1r{-tip_dir_o}
-		.. z3l
-		.. cycle;
-
+	close_path := z4l{tip_dir_c}
+		      .. z5l{down}
+		      .. z6l{right}
+		      .. z2l{right}
+		      .. z2r{left}
+		      ..tension open_tension.. z1r{-tip_dir_o}
+		      .. z3l
+		      .. cycle;
 enddef;
 
+
 fet_beginchar ("open", "open.01");
-	set_char_box (staff_space#, 0, 0.5 staff_space#, 0.5 staff_space#);
-	set_arrow_paths (staff_space, 0.5 staff_space, 1.0, 1.6 linethickness);
-	fill open_path;	
-	addto currentpicture also currentpicture yscaled -1;
+	set_char_box (staff_space#, 1.6 linethickness# / 2,
+		      0.5 staff_space#, 0.5 staff_space#);
+	set_arrow_paths (staff_space, 0.5 staff_space,
+			 1.0, 1.6 linethickness);
+	fill open_path;
+	open_path := open_path yscaled -1;
+	fill open_path;
+
 	penlabels (1, 2, 3);
 	penlabels (4, 5, 6);
 fet_endchar;
 
+
 fet_beginchar ("open", "open.0M1");
-	set_char_box (0, staff_space#, 0.5 staff_space#, 0.5 staff_space#);
-	set_arrow_paths (staff_space, 0.5 staff_space, 1.0, 1.6 linethickness);
-	fill open_path;	
-	addto currentpicture also currentpicture yscaled -1;
+	set_char_box (1.6 linethickness# / 2, staff_space#,
+		      0.5 staff_space#, 0.5 staff_space#);
+	set_arrow_paths (staff_space, 0.5 staff_space,
+			 1.0, 1.6 linethickness);
+	fill open_path;
+	open_path := open_path yscaled -1;
+	fill open_path;
 	currentpicture := currentpicture xscaled -1;
 fet_endchar;
 
+
 fet_beginchar ("open", "open.11");
 	set_char_box (.5 staff_space#, .5 staff_space#,
-			1.0 staff_space#, 0.0 staff_space#);
-	set_arrow_paths (staff_space, 0.5 staff_space, 1.0, 1.6 linethickness);
-	fill open_path;	
-	addto currentpicture also currentpicture yscaled -1;
+		      1.0 staff_space#, 1.6 linethickness# / 2);
+	set_arrow_paths (staff_space, 0.5 staff_space,
+			 1.0, 1.6 linethickness);
+	fill open_path;
+	open_path := open_path yscaled -1;
+	fill open_path;
 	currentpicture := currentpicture rotated 90;
 fet_endchar;
 
+
 fet_beginchar ("open", "open.1M1");
 	set_char_box (.5 staff_space#, .5 staff_space#,
-			0.0 staff_space#, 1.0 staff_space#);
-	set_arrow_paths (staff_space, 0.5 staff_space, 1.0, 1.6 linethickness);
-	fill open_path;	
-	addto currentpicture also currentpicture yscaled -1;
+		      1.6 linethickness# / 2, 1.0 staff_space#);
+	set_arrow_paths (staff_space, 0.5 staff_space,
+			 1.0, 1.6 linethickness);
+	fill open_path;
+	open_path := open_path yscaled -1;
+	fill open_path;
 	currentpicture := currentpicture rotated 90;
 	currentpicture := currentpicture yscaled -1;
 fet_endchar;
 
 
-
 fet_beginchar ("close", "close.01");
 	set_char_box (staff_space#, 0, 0.5 staff_space#, 0.5 staff_space#);
 	set_arrow_paths (staff_space, 0.5 staff_space, 1.5, blot_diameter);
-	fill close_path;	
-	addto currentpicture also currentpicture yscaled -1;
+	fill close_path;
+	close_path := close_path yscaled -1;
+	fill close_path;
 fet_endchar;
+
+
 fet_beginchar ("close", "close.0M1");
 	set_char_box (0, staff_space#,  0.5 staff_space#, 0.5 staff_space#);
 	set_arrow_paths (staff_space, 0.5 staff_space, 1.5, blot_diameter);
-	fill close_path;	
-	addto currentpicture also currentpicture yscaled -1;
+	fill close_path;
+	close_path := close_path yscaled -1;
+	fill close_path;
 	currentpicture := currentpicture xscaled -1;
 fet_endchar;
 
+
 fet_beginchar ("close", "close.11");
-	set_char_box (.5 staff_space#, .5 staff_space# ,
-			1.0 staff_space#, 0.0 staff_space#);
+	set_char_box (.5 staff_space#, .5 staff_space#,
+		      1.0 staff_space#, 0.0 staff_space#);
 	set_arrow_paths (staff_space, 0.5 staff_space, 1.5, blot_diameter);
-	fill close_path;	
-	addto currentpicture also currentpicture yscaled -1;
+	fill close_path;
+	close_path := close_path yscaled -1;
+	fill close_path;
 	currentpicture := currentpicture rotated 90;
 fet_endchar;
 
+
 fet_beginchar ("close", "close.1M1");
-	set_char_box (.5 staff_space#, .5 staff_space# ,
-			0.0 staff_space#, 1.0 staff_space#);
+	set_char_box (.5 staff_space#, .5 staff_space#,
+		      0.0 staff_space#, 1.0 staff_space#);
 	set_arrow_paths (staff_space, 0.5 staff_space, 1.5, blot_diameter);
-	fill close_path;	
-	addto currentpicture also currentpicture yscaled -1;
+	fill close_path;
+	close_path := close_path yscaled -1;
+	fill close_path;
 	currentpicture := currentpicture rotated -90;
 fet_endchar;