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+<HEAD><TITLE>
+Cross-bar beaming
+</TITLE></HEAD>
+<BODY>
+<P>
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+
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+
+<H2>
+Cross-bar beaming
+</H2>
+<P>
+Generally, beams do not cross bar lines, and Mup follows that rule.
+However, if you want beams to cross a bar line, there are at least two
+possible approaches to getting the
+desired effect. The first is to explicitly specify
+<A HREF="chrdattr.html#stemlen">stem lengths</A>
+such that all the beams in the various measures will lie on the same line.
+You can then use the
+<A HREF="linecurv.html">line command</A>
+to fill in the gaps in the beams across the bar lines.
+</P>
+<P>
+The other approach is to draw in the bar line using the "line" construct.
+To do this you first tell Mup that a measure is twice as long as is really
+is, so that you can put two actual measures inside what Mup thinks is a
+single measure. Here is an example.
+<BR><PRE>
+// First make an empty measure ending with an
+// invisible bar. This is for the sole purpose
+// of allowing the real time signature to be
+// printed and would not be necessary if we
+// wanted to cross a bar line other than
+// the very first bar line of the piece.
+1: ms;
+invisbar
+
+// Now, make the effective time signature twice
+// as long as the real time signature, but use 'n' so this fake
+// time signature is not actually printed.
+// Set up for beaming across the entire double-length measure.
+// (You could could use other beamstyles if you wish, or custom beaming.)
+score time=8/4n
+beamstyle=1/2
+music
+
+// Now do the double-length measure. On the chord
+// just after where we want a bar line, add some extra
+// padding and set a location tag so that we can draw
+// a bar line relative to the tag.
+1: 8c;e;f;d;g;e;f;a; [pad 3; =a]g;e;f;a;g;d+;4c+;
+// Also set a location tag on the next bar line,
+// so that we can get the vertical endpoints of the
+// bar line that we draw from the endpoints of the
+// normal Mup-supplied bar line.
+bar =b
+
+// Now draw the bar line that goes through the beam.
+// Use the horizontal position relative to the "a"
+// location tag on the chord in the second actual measure,
+// and get the vertical endpoints from the "b" tag
+// associated with the next bar line.
+line (a.w + 1, b.y + 4) to (a.w + 1, b.y - 4)
+</PRE><BR>
+<IMG SRC="mugex93.gif" ALT="Picture of Mup output"><BR>
+</P>
+<HR><P>
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~mdw / mup / blobdiff