Hi All,
If you find a cool sound using the picker and want to modify it programmatically, there are limitations. This program shows all sliders on the screen (thanks szleski for the Hslider class that I modified). It will generate the sound() parameters which you can copy and paste into your project. You might do something like change the StartFrequency like I did to make notes.
Good idea @Fred! I had some problems with the sliders though, in the sense that if you move a slider and accidentally moved your finger a but in the vertical direction, you end up with changing the value of the next slider. I took the liberty of updating your program, adding multitouch support, saving the state in local storage, added integer slider for the WaveForm and putting the sliders in a table simplifying the overall program. I hope you approve!
-- Sound Slider
-- original author Fredbogg
-- adapted by Herwig Van Marck
function setup()
print("double tap to reset sliders")
print(SOUND_SQUAREWAVE)
time = 0
--displayMode( FULLSCREEN)
x = 1.9
-- iparameter("waveform",0,3,0)
--parameter("volume",0,1,1.0)
sliders={}
playDelaySlider = HSlider("playDelay",255,WIDTH/x, HEIGHT - 10, 0.1, 5, 2)
table.insert(sliders, HSlider("StartFrequency",255,WIDTH/x, HEIGHT - 50, 0, 1, 0.5))
table.insert(sliders, HSlider("AttackTime",255,WIDTH/x, HEIGHT - 90, 0, 1, 0))
table.insert(sliders, HSlider("SustainTime",255,WIDTH/x, HEIGHT - 130, 0, 3, 0.5))
table.insert(sliders, HSlider("SustainPunch",255,WIDTH/x, HEIGHT - 170, 0, 1, 0))
table.insert(sliders, HSlider("DecayTime",255,WIDTH/x, HEIGHT - 210, 0, 3, 0))
table.insert(sliders, HSlider("MinimumFrequency",255,WIDTH/x, HEIGHT - 250, 0, 1, 0))
table.insert(sliders, HSlider("Slide",255,WIDTH/x, HEIGHT - 290, 0, 1, 0.5))
table.insert(sliders, HSlider("DeltaSlide",255,WIDTH/x, HEIGHT - 330, 0, 1, 0.5))
table.insert(sliders, HSlider("VibratoDepth",255,WIDTH/x, HEIGHT - 370, 0, 1, 0.5))
table.insert(sliders, HSlider("VibratoSpeed",255,WIDTH/x, HEIGHT - 410, 0, 1, 0.5))
table.insert(sliders, HSlider("ChangeAmount",255,WIDTH/x, HEIGHT - 450, 0, 1, 0.5))
table.insert(sliders, HSlider("ChangeSpeed",255,WIDTH/x, HEIGHT - 490, 0, 1, 0.5))
table.insert(sliders, HSlider("SquareDuty",255,WIDTH/x, HEIGHT - 530, 0, 1, 0.5))
table.insert(sliders, HSlider("DutySweep",255,WIDTH/x, HEIGHT - 570, 0, 1, 0.5))
table.insert(sliders, HSlider("RepeatSpeed",255,WIDTH/x, HEIGHT - 610, 0, 1, 0.5))
table.insert(sliders, HSlider("PhaserSweep",255,WIDTH/x, HEIGHT - 650, 0, 1, 0.5))
table.insert(sliders, HSlider("LowPassFilterCutoff",255,WIDTH/x, HEIGHT - 690, 0, 1, 1))
table.insert(sliders, HSlider("LowPassFilterCutoffSweep",255,
WIDTH/x, HEIGHT - 730, 0, 1, 0.5))
table.insert(sliders, HSlider("LowPassFilterResonance",255,
WIDTH/(10*x), HEIGHT - 10, 0, 1, 0.5))
table.insert(sliders, HSlider("HighPassFilterCutoff",255,
WIDTH/(10*x), HEIGHT - 50, 0, 1, 0.5))
table.insert(sliders, HSlider("HighPassFilterCutoffSweep",255,
WIDTH/(10*x), HEIGHT - 90, 0, 1, 0.5))
table.insert(sliders, HSlider("Waveform",255,WIDTH/(10*x), HEIGHT - 130, 0, 3, 0,
{"Square","Saw","Sine","Noise"}))
table.insert(sliders, HSlider("Volume",255,WIDTH/(10*x), HEIGHT - 170, 0, 1, 1))
end
-- This function gets called once every frame
function draw()
-- This sets the background color to black
background(0, 0, 0)
if CurrentOrientation == PORTRAIT then
displayMode(FULLSCREEN)
else
displayMode(STANDARD)
end
drawSliders()
-- Do your drawing here
time = time + DeltaTime
if time > playDelaySlider.v then
playSound()
time = 0
end
end
function buildSound()
local str='snd={'
for i=1,#sliders do
slider=sliders[i]
if (i~=1) then
str = str .. ", "
end
str = str .. slider.name .. " = " .. slider.v
end
return str.."}"
end
function playSound()
loadstring(buildSound())()
sound(snd)
end
function touched(touch)
for i=1,#sliders do
sliders[i]:touched(touch)
end
playDelaySlider:touched(touch)
if touch.state == ENDED then
clearOutput()
if touch.tapCount==2 then
for i=1,#sliders do
sliders[i]:reset()
end
end
print("sound("..buildSound()..")\
")
end
end
function drawSliders()
for i=1,#sliders do
sliders[i]:draw()
end
playDelaySlider:draw()
end
HSlider = class()
function HSlider:init(name,length,x, y, minv, maxv, v, intLabels)
-- you can accept and set parameters here
self.x = x
self.y = y
self.minv = minv
self.maxv = maxv
self.intLabels=intLabels
self.default=v
local val=readLocalData(name)
if (val) then
self.v=val
else
self.v = v
end
self.length = length
self.name = name
self.touchID=nil
end
function HSlider:draw()
-- Codea does not automatically call this method
pushStyle()
stroke(255, 255, 255, 255)
lineCapMode(PROJECT)
strokeWidth(7)
self:vtick(0, 5)
self:vtick(self.length, 5)
if ((self.intLabels) and (self.maxv - self.minv>1))then
for tx=self.minv+1,self.maxv -1 do
self:vtick((tx- self.minv) / (self.maxv - self.minv) * self.length,3)
end
end
lineCapMode(SQUARE)
line(self.x, self.y, self.x + self.length, self.y)
lineCapMode(PROJECT)
pushStyle()
stroke(229, 42, 44, 255)
self:vtick((self.v - self.minv) / (self.maxv - self.minv) * self.length, 7)
popStyle()
-- print the current value to the right
if (self.intLabels) then
text(self.intLabels[self.v+1],self.x+self.length+50,self.y)
else
text(self.v,self.x+self.length+50,self.y)
end
-- print the name of the slider to the left
text(self.name, self.x+(self.length/2),self.y-10)
popStyle()
end
function HSlider:vtick(x, y)
if x + self.x >= self.x and x <= self.length then
line(self.x + x, self.y - y, self.x + x, self.y + y)
end
end
function HSlider:reset()
self.v=self.default
saveLocalData(self.name,self.v)
end
function HSlider:touched(touch)
-- Codea does not automatically call this method
if touch.state == BEGAN then
if touch.x >= self.x-20 and touch.x <= self.x + self.length + 20
and math.abs(touch.y - self.y) < 20 then
self.touchID=touch.id
end
end
if ((touch.state == MOVING) or (touch.state == BEGAN)) and (self.touchID==touch.id) then
self.v = (touch.x - self.x) / self.length * (self.maxv - self.minv) + self.minv
if self.intLabels then
self.v=math.floor((touch.x - self.x) / self.length * (self.maxv - self.minv) + self.minv)
else
self.v = (touch.x - self.x) / self.length * (self.maxv - self.minv) + self.minv
end
if self.v > self.maxv then
self.v = self.maxv
end
if self.v < self.minv then
self.v = self.minv
end
end
if (touch.state == ENDED) and (self.touched) then
saveLocalData(self.name,self.v)
self.touchID=nil
end
end
Looks great, @Herwig! I’ll take it for a spin tonight. Thanks for cleaning up all that longhand! I was hoping someone might.
One of the things to add now would be a randomise feature, which I was simulating by scribbling my finger over the sliders! There is code available from sfxr on how to pseudo randomise it, as there are many combinations that result in silence.