How to make a parameters Randomiser button?

[deadwing]

Hi

I just discovered Ctrl and got a couple of panels for my synths (Streichfett and Ju 06), and I want now to do one of my own with an added function: RANDOM button.

What I want is a way to get all the parameters available in my panel and randomise them, is that possible and most of all how?

A simple example for two parameters will be enough to then go on on my own and extend it 🙂

Thanks!

[human fly]

i am also looking at how to have a random generator.
i found the following in a matrix1000 panel:
(this is my own adaptation, and i don’t know if it is
working optimally yet)

random=function()
	-- This stops issues during panel bootup
	if panel:getRestoreState() or panel:getProgramState() then return end
--
	math.randomseed(Time.getMillisecondCounterHiRes())

	modul	= panel:getModulatorByName("hexlist")
	rnd	= math.random(0,15)

	modul:setModulatorValue(rnd,false,false,false) 
	end

ok, so that is my own hack of what i saw, and should return
something between 0 and 15 for the ‘hexlist’ modulator.
but it is behaving weirdly: sometimes it just acts as an
up-counter/incrementor, and at others seems to be not
random enough. i think it is something to do with the
timing interval of the seed. Possemo says something
about it here:

os.time() in milliseconds?

in other words, the ‘seeding’ is too slow to give
random results. i don’t fully understand it yet,
but i have messed around with seed and random
modules in synthedit – and seen that if it is not
done right, you do not get random, you can get repeating
patterns.

nb:(if Possemo is reading) interested in how you are
getting parameters by ‘group ownership’ rather than
byName, with repetition for each item. i have not
reproduced that successfully yet.(different context etc.)

[human fly]

ok, so i just tried Possemo’s suggestion, and it
seems to be working much better. like this:

random=function()
	-- This stops issues during panel bootup
	if panel:getRestoreState() or panel:getProgramState() 
        then return end
-- basic randomizer
	local t=os.time()
	local c=os.clock()

	math.randomseed(t*c)

	modul	= panel:getModulatorByName("hexlist")
	rnd	= math.random(0,15)

	modul:setModulatorValue(rnd,false,false,false) 
	end

thanks Possemo ! (what’s the principle behind t*c ?)

[human fly]

umm, yeah, so that works – but i then tried to make it
random a row of 12 selectors but they all come up with
the same value 🙂

so i suppose i need it to iterate in some way, getting
a new clock or time value for each item to be randomized.
i’ll have to have another look at the method i got this
from.

any suggestions ?

[human fly]

he.he.he. (NOT as above)
have figured this out (thanks to that panel+Possemo)
can now specify a group of modulators to randomize,
by customGroup and uiGroup …so that they all return
different values this time 🙂

here’s what it looks like:

randomGroup=function()
-- randomize a group by custom index group

	-- This stops issues during panel bootup
	if panel:getRestoreState() or panel:getProgramState() then return end

	randomGroup = panel:getModulator("randomGroup"):getValue()

-- random seeder
	local t=os.time()
	local c=os.clock()
	math.randomseed(t*c)
	--math.randomseed(Time.getMillisecondCounterHiRes())

	if randomGroup~=nil then

-- custom group items to randomize

		for k=1,12 do --all mods in selected customGroup,12 items

		modul=panel:getModulatorWithProperty("modulatorCustomIndex",k)
		group=modul:getComponent():getProperty("componentGroupName")

			if group=="grp_values" --selected by uiGroup
			then

			rnd=math.random(0,15) --value range to random
			modul:setModulatorValue(rnd,false,false,false)
			end
		end
	end
end

[human fly]

taking this a bit further: i would now like to go back
to the sort of thing this originated with (it is a
simplified version, so i could get my head round how it
worked), *wHERe*: Possemo had a neat setup where various
groups of modulators could be randomized separately:

ie: oscillator parameter group, envelope param’ group, etc.

but in this case i want to randomize an envelope that is
on a uiTabs, not in a group. so instead of ‘componentGroupName’,
i tried ‘componentTabName’ – and yes, it works. so that’s cool.
but now i want to split it up more, because i have several tabs,
with a different envelope on each tab, and of course, i want to
be able to get at them separately.

looking at ‘Utility’, i can see the properties:
‘modulatorCustomNameGroup’ and ‘modulatorCustomIndexGroup’, and
thought i could try to use those to ‘get’ the envelope modulators.

but these are ‘modulator’ properties, not ‘component’ properties.
‘group’ is a component property. i have not yet been able to get
it to work – the method crashed, and it seems i’m missing variables.
so i have to figure out what needs to come after the ‘custom’
parameter: if it’s a string or a boolean, etc.

if i can do this, i don’t need the modulators to be contained
within a uiGroup (allowing a more freedom with the layout).
i can have randomization of tab0 in one custom group, tab1 in
another, tab2 in another, etc.

anyone know what the correct expression is for this?

i want to change from:
group=modul:getComponent():getProperty("componentTabName")
to something like:
group=modul:getComponent():getProperty("modulatorCustomNameGroup")
but i think it should perhaps be:
getModulatorWithProperty("modulatorCustomNameGroup",???)

[human fly]

no joy yet..
tried something else (below) and got this message:

At line [-1]: [C]
What: C
Namewhat: method
Name: getModulatorWithProperty
Error message: No matching overload found, candidates:
CtrlrModulator* getModulatorWithProperty(CtrlrPanel&,String const&,String const&)
CtrlrModulator* getModulatorWithProperty(CtrlrPanel&,String const&,int)

i don’t know what this type of error message indicates:
line -1, what and namewhat. looks like heavier errors that
method syntax problems.

what i’ve tried:

	modul	=panel:getModulatorWithProperty("modulatorCustomIndex",k)
		--group=modul:getComponent():getProperty("componentTabName")
	group	=panel:getModulatorWithProperty("modulatorCustomNameGroup",0)

			if group=="custom_pitchEG"
			then etc.

eg: i tried to use the property, with custom group number, and
invoked the group name below, which sort of made sense 🙂 but
it doesn’t work. i got it to not crash, but it doesn’t do anything.
so i’m missing something.
?

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