Exemplo n.º 1
0
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)
	}

}
Exemplo n.º 2
0
func staves(canvas *pdf.Canvas) {
	r0 := engraving.NewStaffSpec(engraving.RastralZero)
	r1 := engraving.NewStaffSpec(engraving.RastralOne)
	r2 := engraving.NewStaffSpec(engraving.RastralTwo)
	r3 := engraving.NewStaffSpec(engraving.RastralThree)
	r4 := engraving.NewStaffSpec(engraving.RastralFour)
	r5 := engraving.NewStaffSpec(engraving.RastralFive)
	r6 := engraving.NewStaffSpec(engraving.RastralSix)
	r7 := engraving.NewStaffSpec(engraving.RastralSeven)
	r8 := engraving.NewStaffSpec(engraving.RastralEight)

	origin := pdf.Point{21 * pdf.Cm, 1.5 * pdf.Cm}
	engraving.EngraveStaff(origin, 6*pdf.Cm, r0.Height(), 0.1*pdf.Pt, canvas)

	origin.Y = origin.Y + r0.Height() + 1*pdf.Cm
	engraving.EngraveStaff(origin, 6*pdf.Cm, r1.Height(), 0.1*pdf.Pt, canvas)

	origin.Y = origin.Y + r1.Height() + 1*pdf.Cm
	engraving.EngraveStaff(origin, 6*pdf.Cm, r2.Height(), 0.1*pdf.Pt, canvas)

	origin.Y = origin.Y + r2.Height() + 1*pdf.Cm
	engraving.EngraveStaff(origin, 6*pdf.Cm, r3.Height(), 0.1*pdf.Pt, canvas)

	origin.Y = origin.Y + r3.Height() + 1*pdf.Cm
	engraving.EngraveStaff(origin, 6*pdf.Cm, r4.Height(), 0.1*pdf.Pt, canvas)

	origin.Y = origin.Y + r4.Height() + 1*pdf.Cm
	engraving.EngraveStaff(origin, 6*pdf.Cm, r5.Height(), 0.1*pdf.Pt, canvas)

	origin.Y = origin.Y + r5.Height() + 1*pdf.Cm
	engraving.EngraveStaff(origin, 6*pdf.Cm, r6.Height(), 0.1*pdf.Pt, canvas)

	origin.Y = origin.Y + r6.Height() + 1*pdf.Cm
	engraving.EngraveStaff(origin, 6*pdf.Cm, r7.Height(), 0.1*pdf.Pt, canvas)

	origin.Y = origin.Y + r7.Height() + 1*pdf.Cm
	engraving.EngraveStaff(origin, 6*pdf.Cm, r8.Height(), 0.1*pdf.Pt, canvas)
}