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+In keyboard music, sometimes a bracket is drawn to indicate that
+notes from two staffs are to be played
+with the same hand. The bracket is really just a vertical line with short
+horizontal lines at each end. But if you need to make lots of brackets,
+a macro with parameters can be very helpful.
+
+score + staffs=2 + +staff 2 + clef=bass + vscheme=2f + +// Define a macro to draw a bracket to show that notes on two +// different staffs are to be played with the same hand. +// The parameters are location tags for the top and bottom notes +// to be included in the bracket. +define BRACK(TOP, BOT) +// Draw a short horizontal line 0.5 stepsizes above the top note +line (TOP.w - 2, TOP.n + 0.5) to (TOP.w - 1, TOP.n + 0.5) +// Draw a vertical line from 0.5 stepsizes above the top note +// to 0.5 stepsizes below the bottom note. +// Do all the 'x' coordinates relative to the same note (in +// this case the top), so that if the top and bottom chord happen +// to be different widths, the line will still be vertical. +line (TOP.w - 2, TOP.n + 0.5) to (TOP.w - 2, BOT.s - 0.5) +// Draw short horizontal line just below and left of the bottom note. +line (TOP.w - 2, BOT.s - 0.5) to (TOP.w - 1, BOT.s - 0.5) +@ + +music + +// For each chord that is to get a bracket, add some padding to +// make sure there is enough room, and set a location tag +// on the top and bottom notes. +1: [pad 2] ce =a;[] df =b; [] d =c; [] ce =d; +2: [pad 2] g =e; [] a =f; [] af =g; [] g =h; +2 2: 2cc-; 4g-; cc-; +// Now draw the brackets, using the tags as parameters +BRACK (a, e) +BRACK (b, f) +BRACK (c, g) +BRACK (d, h) +bar +
+Note that Mup supports +cross-staff stems, which is another way to notate a chord that is split +across two staffs, and may often be a better choice. +
+