node-addon-lilypond/output/share/lilypond/current/ps/music-drawing-routines.ps

%!PS-Adobe-2.0
%
% Functions for direct and embedded PostScript
%
% This file is part of LilyPond, the GNU music typesetter.
%
% Copyright (C) 1998-2006 Han-Wen Nienhuys <[email protected]>,
%               2013-2019 David Kastrup <[email protected]>
%
% LilyPond is free software: you can redistribute it and/or modify
% it under the terms of the GNU General Public License as published by
% the Free Software Foundation, either version 3 of the License, or
% (at your option) any later version.
%
% LilyPond is distributed in the hope that it will be useful,
% but WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
% GNU General Public License for more details.
%
% You should have received a copy of the GNU General Public License
% along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
%
% Careful with double % as comment prefix.
% Any %%X comment is interpreted as DSC comments.

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	0 setlinecap
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	3 1 roll
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	currentpoint
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	def
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/draw_circle % filled? radius thickness draw_circle
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/draw_ellipse % filled? x-radius y-radius thickness draw_ellipse
{
  setlinewidth % f? x-r y-r
  /savematrix matrix currentmatrix def
  scale % f?
  currentpoint
  1 0 rmoveto
  1 0 360  arc closepath
  savematrix setmatrix
  stroke_and_fill?
} bind def

/draw_partial_ellipse % filled connect x-radius y-radius startangle endangle thickness draw_partial_ellipse
% Note that filled is not boolean to permit for different graylevels (ie for trill keys)
{
  gsave
  currentpoint translate
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    endangle cos endangle cos mul mul
    y_radius y_radius mul
    endangle sin endangle sin mul mul add sqrt div def
  /endangle endangle sin endrad mul y_radius div
    endangle cos endrad mul x_radius div atan def
  /startrad x_radius y_radius mul
    x_radius x_radius mul
      startangle cos startangle cos mul mul
    y_radius y_radius mul
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/draw_line % dx dy x1 y1 thickness draw_line
{
	setlinewidth % dx dy x1 y1
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	stroke
} bind def

/draw_dashed_line % dx dy thickness dashpattern offset draw_dashed_line
{
	1 setlinecap
	setdash % dx dy thickness
	setlinewidth %dx dy
	rlineto
	stroke
	[] 0 setdash % reset dash pattern
} bind def

/print_glyphs % w dx dy glyph print_glyphs
{
	{
		currentpoint %w dx dy glyph x0 y0
		5 2 roll %w x0 y0 dx dy glyph
		3 1 roll %w x0 y0 glyph dx dy
		rmoveto %w x0 y0 glyph
		glyphshow %w x0 y0
		moveto %w
		0 rmoveto
	}repeat
}bind def
%end music-drawing-routines.ps