%
% source file of the GNU LilyPond music typesetter
%
-% (c) 2005 Han-Wen Nienhuys <hanwen@xs4all.nl>
-%
-
-
+% (c) 2005--2008 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;
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);
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);
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;
projects / lilypond.git / blobdiff