1 %!PS-Adobe-1.0: music-drawing-routines.ps
3 % Functions for direct and embedded PostScript
5 % Careful with double % as comment prefix.
6 % Any %%X comment is interpreted as DSC comments.
8 % TODO: use dicts or prefixes to prevent namespace pollution.
11 {pop} {userdict /pdfmark /cleartomark load put} ifelse
23 /Rect [ llx lly urx ury ]
38 % llx lly urx ury page
47 /Rect [ llx lly urx ury ]
56 % from adobe tech note 5002.
58 /b4_Inc_state save def % Save state for cleanup
59 /dict_count countdictstack def % Count objects on dict stack
60 /op_count count 1 sub def % Count objects on operand stack
61 userdict begin % Push userdict on dict stack
62 /showpage { } def % Redefine showpage, { } = null proc
63 0 setgray 0 setlinecap % Prepare graphics state
64 1 setlinewidth 0 setlinejoin
65 10 setmiterlimit [ ] 0 setdash newpath
66 /languagelevel where % If level not equal to 1 then
67 {pop languagelevel % set strokeadjust and
68 1 ne % overprint to their defaults.
69 {false setstrokeadjust false setoverprint
75 count op_count sub {pop} repeat % Clean up stacks
76 countdictstack dict_count sub {end} repeat
87 /vector_add { % x1 y1 x2 y2 vector_add x1+x2 y1+y2
96 /draw_round_box % width height x y blot
100 setlinewidth % w h x y
105 currentpoint % w h x1 y1
113 currentpoint % w h x1 y1
119 /draw_polygon % fill? x(n) y(n) x(n-1) y(n-1) ... x(0) y(0) n blot
121 setlinewidth %set to blot
132 { polygon_x polygon_y vector_add lineto } repeat % n times
141 /draw_repeat_slash % x-width width height draw_repeat_slash
143 2 index % duplicate x-width
147 0 rlineto % x-width 0
148 rlineto % width height
149 neg 0 rlineto % -x-width 0
153 % this is for drawing slurs and barre-indicators.
154 /draw_bezier_sandwich % x5 y5 x6 y6 x7 y7
158 % linewidth draw_bezier_sandwich
161 currentpoint translate
162 % round ending and round beginning
163 1 setlinejoin 1 setlinecap
174 /draw_dot % radius x y draw_dot
179 0 360 arc closepath stroke_and_fill
182 /draw_circle % filled? radius thickness draw_circle
185 currentpoint % f? r x0 y0
186 3 2 roll % f? x0 y0 r
194 /draw_oval % filled? x-radius y-radius thickness draw_ellipse
196 setlinewidth % f? x-r y-r
200 0 yrad -2 xrad mul dup yrad exch 0 rcurveto
201 0 yrad neg dup 2 xrad mul dup 3 1 roll 0 rcurveto
208 /draw_ellipse % filled? x-radius y-radius thickness draw_ellipse
210 setlinewidth % f? x-r y-r
211 /savematrix matrix currentmatrix def
215 1 0 360 arc closepath
222 /draw_partial_ellipse % filled connect x-radius y-radius startangle endangle thickness draw_partial_ellipse
223 % Note that filled is not boolean to permit for different graylevels (ie for trill keys)
226 currentpoint translate
232 /endrad x_radius y_radius mul
233 x_radius x_radius mul
234 endangle cos endangle cos mul mul
235 y_radius y_radius mul
236 endangle sin endangle sin mul mul add sqrt div def
237 /endangle endangle sin endrad mul y_radius div
238 endangle cos endrad mul x_radius div atan def
239 /startrad x_radius y_radius mul
240 x_radius x_radius mul
241 startangle cos startangle cos mul mul
242 y_radius y_radius mul
243 startangle sin startangle sin mul mul add sqrt div def
244 /startangle startangle sin startrad mul y_radius div
245 startangle cos startrad mul x_radius div atan def
248 /savematrix matrix currentmatrix def
249 thickness setlinewidth
250 x_radius y_radius scale
251 startangle cos startangle sin moveto
253 startangle endangle eq { endangle 360 add } { endangle } ifelse
256 startangle cos startangle sin moveto endangle cos endangle sin lineto }
258 savematrix setmatrix filled { stroke_and_fill } { stroke } ifelse
262 /draw_line % dx dy x1 y1 thickness draw_line
264 setlinewidth % dx dy x1 y1
272 /draw_dashed_line % dx dy thickness dashpattern offset draw_dashed_line
276 setdash % dx dy thickness
280 [] 0 setdash % reset dash pattern
283 /draw_dashed_slur % controls thickness dash
286 currentpoint translate
298 /print_glyphs % w dx dy glyph print_glyphs
301 currentpoint %w dx dy glyph x0 y0
302 5 2 roll %w x0 y0 dx dy glyph
303 3 1 roll %w x0 y0 glyph dx dy
304 rmoveto %w x0 y0 glyph
310 %end music-drawing-routines.ps