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+% feta-haak.mf -- implement bracket tips -*-Fundamental-*-
+%
+% part of LilyPond's pretty-but-neat music font
+%
+% source file of the Feta (not the Font-En-Tja) music font
+%
+% (c) 2005--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
+
+fet_begingroup ("brackettips");
+
+def draw_bracket (expr thick_sharp, width_sharp, updown) =
+begingroup;
+ save p, thin, thick, flattening, width, hair, flare;
+ path p;
+ pair tipdir;
+
+ flattening = 0.72;
+ thick# = thick_sharp;
+ flare# = flattening * width#;
+ width# = width_sharp;
+
+ define_pixels (thick, width, flare);
+ if updown = 1:
+ set_char_box (0, width#,
+ .5 thick#, flare#);
+ else:
+ set_char_box (0, width#,
+ flare#, .5 thick#);
+ fi;
+
+ thin = 2 linethickness;
+ hair = 1.25 linethickness;
+
+ pickup pencircle scaled thin;
+ y7 = y1;
+ x7 = x2;
+ z2 = z4r + (thin, 0);
+
+ penpos3 (thin, 0);
+ penpos4 (thin, 90);
+
+ z3 = z4;
+
+ top y3 = 0.5 thick;
+ lft x3 = 0.0;
+ x1 = x3l;
+ y1 = -0.5 thick;
+
+ z8 = .5 [z2, z7];
+ top y5 = flare;
+ rt x5 = width;
+
+ p := z8{right}
+ ..tension 1.2.. z5{curl 0};
+ tipdir := direction 1 of p;
+
+ penpos5 (hair, angle tipdir);
+ penpos6 (hair, 90 + angle tipdir);
+
+ z5 = z6;
+
+ pickup pencircle scaled 1;
+
+ fill (z1
+ -- z3l{up}
+ .. z4r{right}
+ -- z2{right}
+ .. z6r{tipdir}
+ .. z5r
+ .. z6l{-tipdir}
+ ..tension 1.1.. z7{left}
+ & z7
+ -- z1
+ & cycle) yscaled updown;
+
+ if updown = 1:
+ penlabels (1, 2, 3, 4, 5, 6, 7, 8);
+ fi;
+endgroup;
+enddef;
+
+
+fet_beginchar ("bracket tip up", "up");
+ draw_bracket (0.45 staff_space#, 1.9 staff_space#, 1);
+fet_endchar;
+
+
+fet_beginchar ("bracket tip down", "down");
+ draw_bracket (0.45 staff_space#, 1.9 staff_space#, -1);
+fet_endchar;
+
+fet_endgroup ("brackettips");