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import Tone from 'tone'
import 'nexusui'
import keys from './lib/keys'
import color from './lib/color'
import kalimba from './lib/kalimba'
import scales from './lib/scales'
const nx = window.nx
const noteCount = 24
const stepCount = 16
let grid
var loop = new Tone.Sequence(function(time, col){
var column = grid.matrix[col]
grid.jumpToCol(col)
for (var i = 0; i < noteCount; i++){
if (column[i] === 1){
const freq = scales.current().index(noteCount - i - 12)
kalimba.play(freq)
}
}
}, [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15], "16n")
nx.colorize('#f4d142')
nx.onload = () => {
grid = nx.widgets.grid
grid.sequenceMode = true
grid.bpm = 1
grid.col = stepCount
grid.row = noteCount
grid.init()
grid.resize(480, 640)
grid.draw()
nx.widgets.shiftUp.on('*', e => e.press && shiftUp())
nx.widgets.shiftDown.on('*', e => e.press && shiftDown())
nx.widgets.slideUp.on('*', e => e.press && slideUp())
nx.widgets.slideDown.on('*', e => e.press && slideDown())
nx.widgets.rotateUp.on('*', e => e.press && rotateVertical(-1))
nx.widgets.rotateDown.on('*', e => e.press && rotateVertical(1))
nx.widgets.rotateLeft.on('*', e => e.press && rotateHorizontal(-1))
nx.widgets.rotateRight.on('*', e => e.press && rotateHorizontal(1))
nx.widgets.flip.on('*', e => e.press && flip())
nx.widgets.flop.on('*', e => e.press && flop())
loop.start()
Tone.Transport.bpm.value = 108
Tone.Transport.start()
}
function shiftUp () {
}
function shiftDown () {
}
function slideUp () {
assignNotes( mapFunction(findNotes(), (n) => {
return (n - 1 + noteCount) % noteCount
}))
}
function slideDown () {
assignNotes( mapFunction(findNotes(), (n) => {
return (n + 1 + noteCount) % noteCount
}))
}
function flip () {
assignNotes( mapReverse(findNotes()) )
}
function flop () {
assignPositions( mapReverse(findPositions()) )
}
function rotateHorizontal (n) {
assignPositions( remapArray(findPositions(), n) )
}
function rotateVertical (n) {
assignNotes( remapArray(findNotes(), n) )
}
function assignPositions (notes) {
if (! notes) return
const a = grid.matrix
const b = iota()
stride(a, (i,j,v) => {
if (i in notes) {
b[notes[i]][j] = v
}
})
assign(grid.matrix, b)
grid.draw()
}
function assignNotes (positions) {
if (! positions) return
const a = grid.matrix
const b = iota()
stride(a, (i,j,v) => {
if (j in positions) {
b[i][positions[j]] = v
}
})
assign(grid.matrix, b)
grid.draw()
}
function stride (a, f) {
const w = a.length, h = a[0].length
for (let i = 0; i < w; i++) {
for (let j = 0; j < h; j++) {
f(i, j, a[i][j])
}
}
return a
}
// assign b -> a
function assign (a, b) {
return stride(b, (i,j,v) => a[i][j] = b[i][j])
}
function clone (a) {
const b = iota(a.length, a[0].length)
return assign(b, a)
}
function iota () {
const w = grid.matrix.length, h = grid.matrix[0].length
const a = new Array(w)
for (let i = 0; i < w; i++) {
a[i] = new Array(h)
for (let j = 0; j < h; j++) {
a[i][j] = 0
}
}
return a
}
function findNotes () {
const a = new Array(grid.matrix[0].length)
grid.matrix.forEach((col, i) => {
col.forEach((v, j) => { if (v) a[j] = 1 })
})
return a.reduce((acc, v, i) => {
if (v === 1) acc.push(i)
return acc
}, [])
}
function findPositions () {
return grid.matrix.reduce((acc, row, i) => {
if (row.some((x) => x === 1)) acc.push(i)
return acc
}, [])
}
function remapArray (a, n) {
if (! a.length) return
const h = {}
const b = rotate(a, n)
for (let i = 0; i < b.length; i++) {
h[b[i]] = a[i]
}
return h
}
function rotate(a, n) {
const b = a.slice(0)
b.unshift.apply( b, b.splice( -n, b.length ) )
console.log(b)
return b
}
function mapFunction (a, f) {
if (! a.length) return
const h = {}
for (let i = 0; i < a.length; i++) {
h[a[i]] = f(a[i])
}
console.log(h)
return h
}
function mapReverse (a) {
if (! a.length) return
const h = {}
const b = a.slice(0).reverse()
for (let i = 0; i < b.length; i++) {
h[b[i]] = a[i]
}
return h
}
keys.listen(function(index){
const freq = scales.current().index(index)
kalimba.play(freq)
})
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