spectrals/spectrals.lua at master · g-erson/spectrals · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
-- spectrals
-- 0.0.1 @ganders
-- llllllll.co/t/spectrals
--
--
-- E1/K2 : Change page
-- K3 : Change tab
-- E2/3 : Adjust parameters


local UI = require "ui"
-- local Graph = require "graph"
-- local EnvGraph = require "envgraph"

engine.name = "Spectrals"

-- engine.noteOn(4) //pink noise or external
-- engine.noteOff(4) //pink noise or external
-- engine.toggleInput() //pink noise or external
-- engine.toggleEnv() //envelopes on/off
-- engine.toggleBank() //edit A or B bank
-- engine.getBusAmp( 3) //prints debug
-- engine.amp(4, 1.8 ) //sets amp for spectral
-- engine.attack(5)
-- engine.sustain( 1)
-- engine.release(0.3)
-- engine.ring( 2)

-- Max amplitude of each band
amps = {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 }
ampLevels = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
metroUpdate = {}
ampPolls = {}


function init()
  -- Sets a nice start
  engine.noteOn(0)
  engine.noteOn(1)
  engine.noteOn(2)
  engine.noteOn(3)
  engine.noteOn(4)
  engine.noteOn(8)
  engine.noteOn(10)
  engine.noteOn(11)
  engine.noteOn(13)

  params:add_control("ring","ring",controlspec.new(0.01,10,'exp',0.02,0.6,''))
  params:set_action("ring", function(val) engine.ring(val) end)

  -- Everything Amp
  params:add_control("amp","amp",controlspec.new(0.1,9.99,'exp',0.1,0.2,''))
  params:set_action("amp", function(val) engine.ampAll(val*0.1) end)

--local vu_l, vu_r = poll.set("amp_in_l"), poll.set("amp_in_r")
--vu_l.time, vu_r.time = 1 / 30, 1 / 30
--vu_l.callback = function(val) in_l = val * 100 end
--vu_r.callback = function(val) in_r = val * 100 end
--vu_l:start()
--vu_r:start()
  for i = 1, 16 do
    ampPolls[i] = poll.set("band_amp_out_"..(i-1))
    ampPolls[i].time = 1 / 30
    ampPolls[i].callback = function(val) ampLevels[i] = val * 10 end
    ampPolls[i]:start()
  end

  metroUpdate = metro.init (function() redraw() end, 0.04)
  metroUpdate:start()

  print("spectrals resonate")
end

-- Key input
function key(n, z)
  if z == 1 then

    if n == 2 then
      engine.toggleInput()

    elseif n == 3 then
      engine.toggleEnv()
      engine.noteOn(4)
      engine.noteOn(8)
      engine.noteOn(10)

    end
  end
end

function enc(n,d)
  -- encoder actions: n = number, d = delta
  if n == 1 then
  elseif n == 2 then
    params:delta("ring", d)
  else --n is 3
    params:delta("amp", d)
  end
  redraw()
end

function draw_amp_slider(x, y, index)
  screen.level(1)
  screen.move(x - 30, y - 17)
  screen.line(x - 30, y + 29)
  screen.stroke()
  screen.level(3)
  local r = util.clamp((ampLevels[index] * 100 or 0), 0, amps[index] * 34)
  screen.rect(x - 31.5, y + 29, 3, -r)
  screen.line_rel(3, 0)
  screen.fill()
  screen.level(6)
  screen.rect(x - 33, 54 - amps[index] / 3 * 114, 5, 2)
  screen.fill()
  screen.level(5)
--  screen.rect(x - 32, 49 - reel.rec.threshold / 15 * 10, 3, 1)
  screen.fill()
end

function redraw()
  screen.clear()
  screen.move(0,5)
  screen.level(3)
  screen.text("spectrals")
  screen.move(68,5)
  screen.level(9)
  screen.text("Q:" .. params:get("ring"))
  screen.move(95,5)
  screen.text("amp:" .. params:get("amp"))
--  screen.text("Q:" .. params:get("delaytime"))
--
--
  for i = 1, 16 do
    draw_amp_slider( 37 + (i*7), 30, i)
  end

  screen.update()
end

function cleanup()
  poll:clear_all()
  metro.free_all()
end