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| 1 | |||
| 2 | def draw_keyboard(firstnote = 21, lastnote = 108, y0 = 0, y1 = 1): | ||
| 3 | import Gnuplot | ||
| 4 | octaves = 10 | ||
| 5 | |||
| 6 | # build template of white notes | ||
| 7 | scalew = 12/7. | ||
| 8 | xw_temp = [i*scalew for i in range(0,7)] | ||
| 9 | # build template of black notes | ||
| 10 | scaleb = 6/7. | ||
| 11 | xb_temp = [i*scaleb for i in [1,3,7,9,11]] | ||
| 12 | |||
| 13 | xb,xw = [],[] | ||
| 14 | for octave in range(octaves-1): | ||
| 15 | for i in xb_temp: | ||
| 16 | curnote = i+12*octave | ||
| 17 | if curnote > firstnote-1 and curnote < lastnote+1: | ||
| 18 | xb = xb + [curnote] | ||
| 19 | for octave in range(octaves-1): | ||
| 20 | for i in xw_temp: | ||
| 21 | curnote = i+12*octave | ||
| 22 | if curnote > firstnote-1 and curnote < lastnote+1: | ||
| 23 | xw = xw + [curnote] | ||
| 24 | |||
| 25 | xwdelta = [1/2. * scalew for i in range(len(xw))] | ||
| 26 | yw = [y0+(y1-y0)*1/2. for i in range(len(xw))] | ||
| 27 | ywdelta = [(y1-y0)*1/2. for i in range(len(xw))] | ||
| 28 | |||
| 29 | xbdelta = [2/3. * scaleb for i in range(len(xb))] | ||
| 30 | yb = [y0+(y1-y0)*2/3. for i in range(len(xb))] | ||
| 31 | ybdelta = [(y1-y0)*1/3. for i in range(len(xb))] | ||
| 32 | |||
| 33 | whites = Gnuplot.Data(xw,yw,xwdelta,ywdelta,with_ = 'boxxyerrorbars') | ||
| 34 | blacks = Gnuplot.Data(xb,yb,xbdelta,ybdelta,with_ = 'boxxyerrorbars fill solid') | ||
| 35 | |||
| 36 | return blacks,whites | ||
| 37 | |||
| 38 | if __name__ == '__main__': | ||
| 39 | from aubio.gnuplot import gnuplot_create | ||
| 40 | blacks,whites = draw_keyboard(firstnote = 21, lastnote = 108) | ||
| 41 | g = gnuplot_create('','') | ||
| 42 | #g('set style fill solid .5') | ||
| 43 | #g('set xrange [60-.5:72+.5]') | ||
| 44 | #g('set yrange [-0.1:1.1]') | ||
| 45 | |||
| 46 | g.plot(whites,blacks) | ||