func main() {
doc := pdf.New()
canvas := doc.NewPage(pdf.A4Width, pdf.A4Height)
path := new(pdf.Path)
bottomLeft := pdf.Point{borderWidth, borderWidth}
topRight := pdf.Point{pdf.A4Width - borderWidth, pdf.A4Height - borderWidth}
path.Rectangle(pdf.Rectangle{bottomLeft, topRight})
canvas.Stroke(path)
staffOrigin := pdf.Point{bottomLeft.X + pdf.Unit(10), bottomLeft.Y + pdf.Unit(500)}
largeStaff := engraving.NewStaffSpec(engraving.RastralZero)
engraving.EngraveStaff(staffOrigin, 12*pdf.Cm, largeStaff.Height(), 0.1*pdf.Pt, canvas)
engraving.EngraveSurrogateNoteHead(staffOrigin, largeStaff.StaffSpace(), canvas)
nextNote := pdf.Point{}
nextNote.X = pdf.Unit(staffOrigin.X + largeStaff.StaffSpace())
nextNote.Y = pdf.Unit(staffOrigin.Y + largeStaff.IndexOffset(0))
engraving.EngraveSurrogateNoteHead(nextNote, largeStaff.StaffSpace(), canvas)
nextNote.X = pdf.Unit(staffOrigin.X + (2 * largeStaff.StaffSpace()))
nextNote.Y = pdf.Unit(staffOrigin.Y + largeStaff.IndexOffset(7))
engraving.EngraveSurrogateNoteHead(nextNote, largeStaff.StaffSpace(), canvas)
nextNote.X = pdf.Unit(staffOrigin.X + (3 * largeStaff.StaffSpace()))
nextNote.Y = pdf.Unit(staffOrigin.Y + largeStaff.IndexOffset(-1))
engraving.EngraveSurrogateNoteHead(nextNote, largeStaff.StaffSpace(), canvas)
nextNote.X = pdf.Unit(staffOrigin.X + (4 * largeStaff.StaffSpace()))
nextNote.Y = pdf.Unit(staffOrigin.Y + largeStaff.IndexOffset(2))
engraving.EngraveSurrogateNoteHead(nextNote, largeStaff.StaffSpace(), canvas)
smallStaff := engraving.NewStaffSpec(engraving.RastralEight)
staffOrigin.Y = staffOrigin.Y + 5*pdf.Cm
engraving.EngraveStaff(staffOrigin, 12*pdf.Cm, smallStaff.Height(), 0.1*pdf.Pt, canvas)
canvas.Close()
err := doc.Encode(os.Stdout)
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
}
