MOZAIC - Create your own AU MIDI plugins - OUT NOW!

wim · August 2023

@Birdpie said:
hi guys,
iam looking for a simple midi transpose plugin for cubasis 3.
can i do this with mozaic? or is there a simpler solution?

I recommend Rozeta Scaler from the excellent Rozeta Suite. It can also do scale quantization but has straight transpose by semitones as well.

For Mozaic scripts there's this. I haven't tried it, but anything by @_ki is always solid. https://patchstorage.com/midi-cc-automatable-transposer-scaler-v1-0/

For scale quantization rather than transpose, there's this: https://patchstorage.com/simple-scaler/

pejman · August 2023

@_ki

GREAT 👍 very thanks for useful informations.

1, I used your first trick , And it works very well.

1/1, i have for example 4 variables num, numa , numb , numc . If i convert to :
num
num[1]
num[2]
num[3]

For the first num i did not put [0] , In this case, does mozaic count the variables as two or does it count them as one variable?

Is “num” without the number 0 inside the bracket considered as [0] ?

1/2, and if I have 4 variables for example “gate” “gateb” “gatec” “gated” with x and y variables together:

gate[x[y]]
gateb[x[y]]
gatec[x[y]]
gated[x[y]]

How can they be numbered in brackets?
gate[0][x[y]] ???

2, you wrote: “Another thing i often do is re-use of variable names. My local variables names usually start with an underscore. I don‘t assume hat these persist between functions. So if i used a _tmp variable in one of the functions, i can re-use that name for function local computations in another function. _i, _pad, _knob, _val are common names that for re-usage.”

2/1, What do you mean by local variables names ?

2/2, What do you mean by “I don‘t assume hat these persist between functions” ?

2/3, Can I ask you to give me an example about these last two lines you wrote ? : So if i used a _tmp variable in one of the functions, i can re-use that name for function local computations in another function. _i, _pad, _knob, _val are common names that for re-usage.

3, The content you wrote in the spoiler that they want to show us in Mozaic language highlighter for Textastic, unfortunately, I did not understand what you meant by “different text styles for different groups of variable names”.

Where exactly can they be used?

pejman · August 2023

@espiegel123

@espiegel123 said:

@pejman said:
Does mozaic have a limit on the number of variables in @OnTimer ? Because I sometimes encounter the message ontimer limit 250 variable’s .

I recommend taking a careful look to see if all those variables are necessary in your @onTimer routine. People often use intermediate variables to hold the results of calculations and those can often be eliminated.

Very thanks for recommending.

Chances are I'm making the mistake of using variables @OnTimer that don't need to be there.

But by moving some of them, I got the error of unknown variables , Of course, I need to experiment and research more.

But What do you mean by ,” People often use intermediate variables to hold the results of calculations and those can often be eliminated.” ???

intermediate variables ???

to hold the results of calculations ???

Birdpie · August 2023

can i make a negative midi delay with mozaic? must change the overall latency somehow.

espiegel123 · August 2023

@Birdpie said:
can i make a negative midi delay with mozaic? must change the overall latency somehow.

What exactly do you mean?

espiegel123 · August 2023

@pejman said:
@espiegel123

@espiegel123 said:

@pejman said:
Does mozaic have a limit on the number of variables in @OnTimer ? Because I sometimes encounter the message ontimer limit 250 variable’s .

I recommend taking a careful look to see if all those variables are necessary in your @onTimer routine. People often use intermediate variables to hold the results of calculations and those can often be eliminated.

Very thanks for recommending.

Chances are I'm making the mistake of using variables @OnTimer that don't need to be there.

But by moving some of them, I got the error of unknown variables , Of course, I need to experiment and research more.

But What do you mean by ,” People often use intermediate variables to hold the results of calculations and those can often be eliminated.” ???

intermediate variables ???

to hold the results of calculations ???

For instance ina case like this:

knoba = round GetKnobValue 0 
knobb = round GetKnobValue 1
knobc = round GetKnobValue 2
knobd = round GetKnobValue 3

allPadknobs[p]  = knoba
allPadknobs[q]  = knobb
allPadknobs[r]  = knobc
allPadknobs[s]  = knobd

knoba ,knobb,knobc ,knobd aren’t really needed. They make the code a little easier to read but they can be eliminated by doing:

allPadknobs[p] = round GetKnobValue 0
…

You should also look at whether there are strategies for storing data in large arrays rather than a lot of smaller arrays to avoid having a lot of if/else cascades that determine where data gets stored . We’ve talked about those in DMs.

Birdpie · August 2023

@espiegel123 said:

@Birdpie said:
can i make a negative midi delay with mozaic? must change the overall latency somehow.

What exactly do you mean?

nudge midi tracks in ticks or ms. either to whole track or just a choose trackfile.
in cubasis 3

Birdpie · August 2023

in other words, playing a midi file lets say 6ms earlier is it is. one could choose all notes and do it trail and error, but its more convenient went all tracks stay in their quanisation und i just do it for the whole channel. i logic you can do +\~ midi delay in the channelview.

espiegel123 · August 2023

@Birdpie said:

@espiegel123 said:

@Birdpie said:
can i make a negative midi delay with mozaic? must change the overall latency somehow.

What exactly do you mean?

nudge midi tracks in ticks or ms. either to whole track or just a choose trackfile.
in cubasis 3

You can delay anything that passes through Mozaic by whatever amount you want. I am not sure if delays can be fractions of a millisecond.

So you could delay some notes more than others to do some sort of latency compensation [which shifts things later when necessary to make all notes subject to the same latency]

Birdpie · August 2023

@espiegel123 said:

@Birdpie said:

@espiegel123 said:

@Birdpie said:
can i make a negative midi delay with mozaic? must change the overall latency somehow.

What exactly do you mean?

nudge midi tracks in ticks or ms. either to whole track or just a choose trackfile.
in cubasis 3

You I can delay anything that passes through Mozaic by whatever amount you want. I am not sure if delays can be fractions of a millisecond.

So you could delay some notes more than others to do some sort of latency compensation [which shifts things later when necessary to make all notes subject to the same latency]

problem is maybe the negative delay<
playing something early than is ist writen must someone communicate with the delay compensation.

espiegel123 · August 2023

@Birdpie said:

@espiegel123 said:

@Birdpie said:

@espiegel123 said:

@Birdpie said:
can i make a negative midi delay with mozaic? must change the overall latency somehow.

What exactly do you mean?

nudge midi tracks in ticks or ms. either to whole track or just a choose trackfile.
in cubasis 3

You I can delay anything that passes through Mozaic by whatever amount you want. I am not sure if delays can be fractions of a millisecond.

So you could delay some notes more than others to do some sort of latency compensation [which shifts things later when necessary to make all notes subject to the same latency]

problem is maybe the negative delay<
playing something early than is ist writen must someone communicate with the delay compensation.

I am not understanding what you mean by negative delay. You can delay some notes less than others (that is how latency compensation works) but you can’t send a note out before it has been received or cause a destination to receive it before it was sent.

_ki · August 2023

@pejman

2/1, What do you mean by local variables names ?

Procedural programming languages (C, C++, Pascal, Java, Modula, Python, Javascript …) feature a concept called variable scope (with local scope, global scope) and function parameters and constants while Mozaic only offers globally scoped variables.

But one still can programm in Mozaic with the mindset of these more advanced languages - and then thereby name the variables accordy to their intended scope or use-case. So it‘s all in your head - and helps experienced programmers a lot in understanding what the code does.

2/2, What do you mean by “I don‘t assume hat these persist between functions” ?

See scope definition above - when programming in Mozaic it‘s just a mindset.

.

2/3, Can I ask you to give me an example about these last two lines you wrote ? : So if i used a _tmp variable in one of the functions, i can re-use that name for function local computations in another function. _i, _pad, _knob, _val are common names that for re-usage.

Here one programmed in the mindset of more advanced languages and used the concept of local variables.

@OnLoad
  Call @ResetKnobValues
  Call @DrawKnobs
  
  calc_result = 0
  something = 0
  Call @CalcSomething
  Call @CalcOtherStuff
@End 

@ResetKnobValues
  for _knob = 0 to 3
    SetKnobValue _knob, 0
  endfor
@End 

@DrawKnobs
  for _knob = 0 to 3
    LabelKnob _knob,{Knob },_knob
  endfor
@End 

@CalcSomething
  _tmp = 0
  for _i = 1 to 7
    _tmp = _tmp + (Pow 2, _i)
  endfor
  calc_result = _tmp
@End

@CalcSomething
  _tmp = 0
  _i = 10
  while _i > 0
    _tmp = (_tmp + 11) *3
    Inc _i
  endwhile
  something = _tmp
@End

The _i and _tmp are initialized inside the function and not expected to be used for exchanging information between functions. Also the _knob variable is marked as local, so one should never use it to transfer values betwen functions. Following that mindset, you can re-use the name in all the functions you want. With the name you show/explain yourself that the variable is meant to be valid inside that function only.

.

3, The content you wrote in the spoiler that they want to show us in Mozaic language highlighter for Textastic, unfortunately, I did not understand what you meant by “different text styles for different groups of variable names”.

See explanation in 2/1 - the different kinds of vaiables use different text styles. In Mozaic still all variables are global, BUT one still can programm with the mindset of more adanced languages with scopes, parameters, constants etc. BUT you yourself are responsible to abide their rules, it‘s not enforced by Moazic.

If you name a vaiable caps only since you want to express that this value will never change (maybe its just used as fixed index into an array or specifies the highest pad number used, or a CC index for something etc). You then self-impose that you that you will set that value only once in the whole script and never re-compute the value or asssign something. Reading/using that ‚constant‘ variable is allowed everywhere.
When you two weeks later read your program, you will automatically see the variable name is caps only and just know ‚this value is a constant‘ without reading through the whole script to check what its used for.

Same for local variables. You just know they will be intialized and used in the current function only. And when inspecting the code of another function, the same variable will be used for something else.

For people with programming background this helps a lot with readability and makes the code easier to unserstand when developing and also when coming back to the code,

Birdpie · August 2023

@espiegel123 said:

@Birdpie said:

@espiegel123 said:

@Birdpie said:

@espiegel123 said:

@Birdpie said:
can i make a negative midi delay with mozaic? must change the overall latency somehow.

What exactly do you mean?

nudge midi tracks in ticks or ms. either to whole track or just a choose trackfile.
in cubasis 3

You I can delay anything that passes through Mozaic by whatever amount you want. I am not sure if delays can be fractions of a millisecond.

So you could delay some notes more than others to do some sort of latency compensation [which shifts things later when necessary to make all notes subject to the same latency]

problem is maybe the negative delay<
playing something early than is ist writen must someone communicate with the delay compensation.

I am not understanding what you mean by negative delay. You can delay some notes less than others (that is how latency compensation works) but you can’t send a note out before it has been received or cause a destination to receive it before it was sent.

negative delay means to note is playing earlier than the file shows.
in logics or cubase track inspector you can move the whole timing of that midi channel forwards (+6ms) or backwards (-6ms)
somehow the daw must compensate that.
natively this is not possible in cubasis 3,
that's why iam asked.

espiegel123 · August 2023

@Birdpie said:

@espiegel123 said:

@Birdpie said:

@espiegel123 said:

@Birdpie said:

@espiegel123 said:

@Birdpie said:
can i make a negative midi delay with mozaic? must change the overall latency somehow.

What exactly do you mean?

nudge midi tracks in ticks or ms. either to whole track or just a choose trackfile.
in cubasis 3

You I can delay anything that passes through Mozaic by whatever amount you want. I am not sure if delays can be fractions of a millisecond.

So you could delay some notes more than others to do some sort of latency compensation [which shifts things later when necessary to make all notes subject to the same latency]

problem is maybe the negative delay<
playing something early than is ist writen must someone communicate with the delay compensation.

I am not understanding what you mean by negative delay. You can delay some notes less than others (that is how latency compensation works) but you can’t send a note out before it has been received or cause a destination to receive it before it was sent.

negative delay means to note is playing earlier than the file shows.
in logics or cubase track inspector you can move the whole timing of that midi channel forwards (+6ms) or backwards (-6ms)
somehow the daw must compensate that.
natively this is not possible in cubasis 3,
that's why iam asked.

Mozaic processes notes being sent through it. It doesn’t know anything about any events until they arrive at Mozaic’s input.

Does that answer your question?

Birdpie · August 2023

@espiegel123 said:

@Birdpie said:

@espiegel123 said:

@Birdpie said:

@espiegel123 said:

@Birdpie said:

@espiegel123 said:

@Birdpie said:
can i make a negative midi delay with mozaic? must change the overall latency somehow.

What exactly do you mean?

nudge midi tracks in ticks or ms. either to whole track or just a choose trackfile.
in cubasis 3

You I can delay anything that passes through Mozaic by whatever amount you want. I am not sure if delays can be fractions of a millisecond.

So you could delay some notes more than others to do some sort of latency compensation [which shifts things later when necessary to make all notes subject to the same latency]

problem is maybe the negative delay<
playing something early than is ist writen must someone communicate with the delay compensation.

I am not understanding what you mean by negative delay. You can delay some notes less than others (that is how latency compensation works) but you can’t send a note out before it has been received or cause a destination to receive it before it was sent.

negative delay means to note is playing earlier than the file shows.
in logics or cubase track inspector you can move the whole timing of that midi channel forwards (+6ms) or backwards (-6ms)
somehow the daw must compensate that.
natively this is not possible in cubasis 3,
that's why iam asked.

Mozaic processes notes being sent through it. It doesn’t know anything about any events until they arrive at Mozaic’s input.

Does that answer your question?

yes sir! thanks alot.

Birdpie · August 2023

@Birdpie said:

@espiegel123 said:

@Birdpie said:

@espiegel123 said:

@Birdpie said:

@espiegel123 said:

@Birdpie said:

@espiegel123 said:

@Birdpie said:
can i make a negative midi delay with mozaic? must change the overall latency somehow.

What exactly do you mean?

nudge midi tracks in ticks or ms. either to whole track or just a choose trackfile.
in cubasis 3

You I can delay anything that passes through Mozaic by whatever amount you want. I am not sure if delays can be fractions of a millisecond.

So you could delay some notes more than others to do some sort of latency compensation [which shifts things later when necessary to make all notes subject to the same latency]

problem is maybe the negative delay<
playing something early than is ist writen must someone communicate with the delay compensation.

I am not understanding what you mean by negative delay. You can delay some notes less than others (that is how latency compensation works) but you can’t send a note out before it has been received or cause a destination to receive it before it was sent.

negative delay means to note is playing earlier than the file shows.
in logics or cubase track inspector you can move the whole timing of that midi channel forwards (+6ms) or backwards (-6ms)
somehow the daw must compensate that.
natively this is not possible in cubasis 3,
that's why iam asked.

Mozaic processes notes being sent through it. It doesn’t know anything about any events until they arrive at Mozaic’s input.

Does that answer your question?

yes sir! thanks alot.

if i remember correct, ableton live got this for every channel too.

pejman · August 2023

@_ki

Thanks for informations.

Can I please answer these two questions?

1/1, i have for example 4 variables num, numa , numb , numc . If i convert to :
num
num[1]
num[2]
num[3]

For the first num i did not put [0] , In this case, does mozaic count the variables as two or does it count them as one variable?

Is “num” without the number 0 inside the bracket considered as [0] ?

1/2, and if I have 4 variables for example “gate” “gateb” “gatec” “gated” with x and y variables together:

gate[x[y]]
gateb[x[y]]
gatec[x[y]]
gated[x[y]]

How can they be numbered in brackets?
gate[0][x[y]] ???

_ki · August 2023

@pejman

For the first num i did not put [0] , In this case, does mozaic count the variables as two or does it count them as one variable?
Is “num” without the number 0 inside the bracket considered as [0] ?

num and num[0] are the same entry of the array ‚num‘ . All num, num[1], num[2], num[999] counts as single variable.

_ki · August 2023

@pejman I don‘t understand the use case of question 1/2 - it looks too complicated to be really usefull or debuggable.

It is not advisable to use the ‚use entries of an array as independant variables‘ work-around for all kimds of variables, especially not for variables that are used as index into other arrays.

and yes, there‘s probabbly a notation that archieves what you intend - array nesting and indexing works without flaws in Mozaic.

wim · August 2023

@_ki Can you clarify what you mean by "array nesting" above, pretty please?

_ki · August 2023

@wim array nesting propabbly wasn‘t the correct term, i meant a constructs like

  idx = [5, 4, 3, 2, 1, 0 ]
  other = [0, 5, 2, 4, 3, 1]
  arr = [6, 13, 4, 21, 42, 51]

  val = arr[ 1 + other[ idx[3] * 2 ] ]

Its an array indexed by a value read from an array that is indexed - in this example three ‚nestings’ of indexing.

.

Small riddle - what‘s assigned to val ?

One has to work from inside out

1) idx[3] is 2, as indices start with 0
2) that times 2 is the index used for ‚other‘
3) other[4] is 3
4) that plus 1 is the index used for ‚arr‘
5) arr[4] is 42, which is assigned to val ;-)

wim · August 2023

Thank you @_ki. That's what I thought. I had hope though that you'd found something I assumed wouldn't work such as:

foo = [0, 5, 2, 4, 3, 1]
bar = [8, 7, 9, 10, 20, 5, 22, 3]
arr = [foo, bar]

var = arr[1,3]      // = 10

_ki · August 2023

@wim

Deducting from the result 10, you meant the first index number selects ‚which‘ array is meant to be accessed and the index after the comma then selects the entry into that bar array. That’s like 2D array access but with swapped indices.

But you probably know that one can flatten 2D arrays into a single dimension. Instead of arr[x,y] use arr[x+y*width_of_x] for access.

.

To get your code snippet (were x and y are swapped) working in Mozaic, change it to:

WIDTH = 8
arr[0*WIDTH]  = [0, 5, 2, 4, 3, 1]          // foo
arr[1*WIDTH]  = [8, 7, 9, 10, 20, 5, 22, 3] // bar

var = arr[1*WIDTH + 3]      // arr[1,3] => 10

One is limited to a total length of 1024 elements, so 16 x 64 is one of the possible 2D array dimensions.

espiegel123 · August 2023

@_ki said:
@wim

Deducting from the result 10, you meant the first index number selects ‚which‘ array is meant to be accessed and the index after the comma then selects the entry into that bar array. That’s like 2D array access but with swapped indices.

But you probably know that one can flatten 2D arrays into a single dimension. Instead of arr[x,y] use arr[x+y*width_of_x] for access.

.

To get your code snippet (were x and y are swapped) working in Mozaic, change it to:
WIDTH = 8
arr[0*WIDTH]  = [0, 5, 2, 4, 3, 1]          // foo
arr[1*WIDTH]  = [8, 7, 9, 10, 20, 5, 22, 3] // bar

var = arr[1*WIDTH + 3]      // arr[1,3] => 10
One is limited to a total length of 1024 elements, so 16 x 64 is one of the possible 2D array dimensions.

And let's not discuss how one can pack multiple integer values into a cell in an effort to overcome the 1024 element limit...its not pretty.

_ki · August 2023

@espiegel123
And let's not discuss how one can pack multiple integer values into a cell in an effort to overcome the 1024 element limit...its not pretty.

🤪 Your right - it seems i‘m that old that i start repeating stories… i already documented all this on the Mozaic Tips & Tricks wiki page

pejman · August 2023

Hi guys.

I have a annoying problem with mozaic texteditor ( code page ) .

For example , I have many lines of code in a script in mozaic, And I'm working on one of the lines of code in the middle of the page.

After editing codes i press upload button , mozaic switch to log page automatically , if i press showGUI button and after press code button, mozaic go to the top of codepage unwanted and i I lose the last line I was editing.

But IF i press Upload button and after the switching to log page automatically i press code button AGAIN and THEN press showGUI Button , This problem does not occur.

That means I should always be careful , before pressing showGUI button, press code page button , So that I don't lose the last line I was editing.

questions:

1, Is this problem from the ios text editor ? Or from mozaic code editor ?

2, Are you also facing this problem? I want to know if this problem is from the ios side, is this problem fixed in the new updates or not because I have ios version 15.7

wim · August 2023

@pejman said:
1, Is this problem from the ios text editor ? Or from mozaic code editor ?

Sorry, I don’t know the answer.
Can you clarify? Do you just lose your editing place in the file or is the line actually lost - missing in the file?

2, Are you also facing this problem? I want to know if this problem is from the ios side, is this problem fixed in the new updates or not because I have ios version 15.7

I do all my editing in Textastic, so I don’t experience what you’ve described. But I can say without a doubt that iOS version has no influence.

espiegel123 · August 2023

I’ve never lost code after tapping upload. Does this happen with any script or only very long ones?

Can you demonstrate the issue by doing a screen recording and sharing it ? (Upload to YouTube as unlisted then share a link here).

pejman · August 2023

@wim

@wim said:

@pejman said:
1, Is this problem from the ios text editor ? Or from mozaic code editor ?

Sorry, I don’t know the answer.
Can you clarify? Do you just lose your place in the file or is the line actually lost?

I'm losing the position of my lines of code, for example I am on line 450, but the mozaic goes to the beginning of the code line with the steps I said

espiegel123 · August 2023

@pejman said:
@wim

@wim said:

@pejman said:
1, Is this problem from the ios text editor ? Or from mozaic code editor ?

Sorry, I don’t know the answer.
Can you clarify? Do you just lose your place in the file or is the line actually lost?

I'm losing the position of my lines of code, for example I am on line 450, but the mozaic goes to the beginning of the code line with the steps I said

I don’t think Mozaic’s editor was intended for editing long scripts. I recommend using a text editor like Textastic for long scripts. @_ki even created a syntax file for it so that it does syntax coloring and checking.

I personally don’t have an expectation that Mozaic’s editor will stay scrolled to where it was after I upload a script.

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MOZAIC - Create your own AU MIDI plugins - OUT NOW!

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