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weuoimi 

Hello, I am working on a project using mostly v8 and dicts which requires a lot of directed movement of objects. I want to create javascript classes that represent certain gridshapes and move them with certain speed and direction according to information provided in dictionary. I want to get familiar with some examples of how you can control the movement of figures in v8 javascript api, i guess you can use some of Jitter3dUtilsInterface functions for that. For example, if i understand it right, i can represent some gridshape as follows:

class Impulse {
    constructor(startVertex, impulsePower, maxTimeInMs) {
        this.currentVertex = startVertex; // Initialize with start vertex
        this.impulsePower = impulsePower;
        this.maxTimeInMs = maxTimeInMs;

        // Visual representation
        this.objectRepresentation = new JitterObject("jit.gl.gridshape");
        this.objectRepresentation.shape = "sphere";
        this.objectRepresentation.scale = [0.2, 0.2, 0.2];
        this.objectRepresentation.color = [Math.random(), Math.random(), Math.random(), 1.0];
        this.objectRepresentation.position = graph[startVertex]?.coordinates || [0, 0, 0]; // Position at startVertex
    }
// class methods
}

now i need to come up how to move them with certain speed etc.

any suggestions are appreciated, thanks in advance

[Jitter, Javascript] Examples of jitter geometry in v8 or just using Jitter3dUtilsInterface in v8?

jitter-javascript-examples-of-using-jitter3dutilsinterface-in-v8

In my current project, I'm implementing a system where impulses traverse a graph, with each impulse having its own set of attributes. An impulse starts at a specific vertex using a startImpulses() function, and as it moves through the graph, it updates its position according to its individual parameters. Each impulse can be thought of as a self-contained unit that moves from one point to another, following the edges of the graph. The graph itself is stored within a dictionary, where each vertex holds coordinates and connections to other vertices.

Now, I'm looking for a way to represent impulse as jitter object with three characteristics, which interpolates from one coordinate to another with some kind of ramp like [line 0 1] acting as time representation. Bang is used as framerate

I would use setInterval js function but I can't In the max API. It's first time for me implementing something that complex in v8, so any suggestions appreciated!

In my current project, I'm implementing a system where impulses traverse a graph, with each impulse having its own set of attributes. An...

implementing-a-graph-floodfill-algorithm-with-dynamically-changing-jitmatrix-and-dictionary-using-v8

implementing dynamically changing ramp (like line/line~) in v8

Thijs Pothoven

Is there any way to make jsui more responsive to the mouse while dragging?

It's slower than other max ui objects like multislider.

also it's not the drawing speed, because when you input mouse data from mousestate it updates just as fast as a multislider. So i think the mouse input somehow, somewhere gets throttled.

slow-event-speed-with-ondrag-in-jsui

slow event speed with ondrag() in jsui

Sean Wilson

Anyone know how to get the number of inlets/outlets of some object by reference through an API? I can't seem to find anything digging through the docs. Seems like an obvious API to expose, so hoping I missed something.

The only way I've found to do this is an insane waste of compute (similar method works for inlets)

get-inletsoutlets-of-object-from-js

Get Inlets/Outlets of Object from js

hal bay

 function on a clip with notes in it. I want to make use of filtering functionality through dict argument as explained in the docs.

var filtered_notes = clip.call("get_all_notes_extended", { return: ["note_id", "pitch", "velocity"] });

post("filtered_notes", filtered_notes, "\n");

var notes_raw = clip.call("get_all_notes_extended");

Screenshot 2023-09-16 at 14.18.04.png

As seen in the screenshot, "notes_raw" has expected values, however "filtered_notes" is 0.00 for the same clip object. So filtering with dict object with return key, as explained in the docs, is not working for me.

Edit: I also tried code below after learning about Dict objects of Max. However, it is still returning all of the keys like 

var note_filter = new Dict("note_filter").set("return", ["note_id", "pitch", "velocity"]);

var filtered_notes = clip.call("get_all_notes_extended", note_filter);

From documentation for get_all_notes_extended: 

"It is possible to optionally provide a single [dict] argument to this function, containing a single key-value pair: the key is "return" and the associated value is a list of the note properties as listed above in the discussion of the returned note dictionaries, e.g. ["note_id", "pitch", "velocity"]. The effect of this will be that the returned note dictionaries will only contain the key-value pairs for the specified properties, which can be useful to improve patch performance when processing large notes dictionaries."

I am trying to make use of new "get_all_notes_extended" function on a clip with notes in it. I want to make use of  filtering functionality through dict argument as explained in the docs.

I tried code below:

As seen in the screenshot, "notes_raw" has expected values, however "filtered_notes" is 0.00 for the same clip object. So filtering with dict object with return key, as explained in the docs, is not working for me.

What am I missing here?
Thanks!


Edit: I also tried code below after learning about Dict objects of Max. However, it is still returning all of the keys like notes_raw above, and not filtering anything:

var note_filter = new Dict("note_filter").set("return", ["note_id", "pitch", "velocity"]);
var filtered_notes = clip.call("get_all_notes_extended", note_filter);

From documentation for get_all_notes_extended: 

"It is possible to optionally provide a single [dict] argument to this function, ... 

filtering-properties-for-getallnotesextended-return-values-is-not-working

Solution found: Apparently, I should have use "set" method on a seperate function call, like below:

var note_filter = new Dict("note_filter");
note_filter.set("return", ["note_id", "pitch", "velocity"]);
clip.call("get_all_notes_extended", note_filter);

Filtering properties for get_all_notes_extended return values is not working

Trevor being Trevor

This is fun one. I wrote some code for a device that uses the Task Object. Everything works as expected when I use my device in Ableton 10. However, in Ableton 11 on both Windows and Mac it appears to stop functioning.

For context, here's the quick breakdown of how the code works...

Now after debugging for a while, this what I found. The Task function runs successfully "once". More specifically, it's called to repeat x number of times and on the last repetition it triggers the process function again as expected. However, the second time it's called to repeat, it stops just before the last repetition. It fails to call the process function again and everything grinds to a halt. As far as I can tell, this is not an error on my part because the works just fine on Ableton 10 (Windows and Mac). I've been looking through the release notes and documentation looking for a clue, but I have not had any luck. Hence, once again I am asking for your help. Maybe I should change my name to Trevor being Bernie. Anyway, this forum is full of heroes without capes as far as I can tell, thanks for any insight in advance!

This is fun one. I wrote some code for a device that uses the Task Object. Everything works as expected when I use my device in Ableton 10. However, in Ableton 11 on both Windows and Mac it appears to stop functioning. 

The user triggers an initialization function that sets all the global variables to a starting value and then kicks off the desired process function. 

The desired processing function searches for a desired condition to be true within a data set using a loop to process each piece of data. Each iteration increments the necessary global variables.

When the desired condition is found, the task function is called for a given number of repetitions. 

A flag is set that allows the process function to pause using break or return commands nested in if statements checking for that flag

The Task function runs. When it reaches it's final repetition, it calls the process function again.

This repeats until certain global variable conditions are met.

This is fun one. I wrote some code for a device that uses the Task Object. Everything works as expected when I use my device in Ableton 10. 

ableton-11-appears-to-break-the-functionality-of-the-task-object

i use task often in Live 11.   Impossible to diagnose without code sample which reproduces the problem.

Well let me ask more generally then, how did Ableton 11 affect the JavaScript implementation in Max compared to Ableton 10? Based on what I described, how may that be relevant to my situation? This is the kind of insight I am looking for so I can diagnose the problem. I will work on an isolated code sample. In the meantime, these release note links may be helpful now or for someone in the future...

On my machine
Ableton 10 Max Version: 8.1.11
Ableton 11 Max Version: 8.3.3

Max Release Notes After 8.1.11 up to 8.3.3
http://cycling74.s3.amazonaws.com/support/version_8_2_0.html
http://cycling74.s3.amazonaws.com/support/version_8_2_1.html
http://cycling74.s3.amazonaws.com/support/version_8_2_2.html
http://cycling74.s3.amazonaws.com/support/version_8_3_0.html
http://cycling74.s3.amazonaws.com/support/version_8_3_1.html
http://cycling74.s3.amazonaws.com/support/version_8_3_2.html
https://cycling74.s3.amazonaws.com/support/version_8_3_3.html

Possibly Related Excerpts from Links Above
8.2.0
jsliveapi: eliminate crash when there's no 'this' for operations (the task object uses 'this')

8.2.2
JS Task: fixed issue with creating JS object with task

Kudos for digging up the history.  If you are trying to prove a regression caused by a Max update among those builds the next step would be a binary regression through the builds.

So maybe you'd start with Live 10 but linking Max install of 8.2.1 and see if it happens.  Then move newer to newer or older builds based on those results to isolate where the behavior change was introduced.  This is truly tedious and potentially very unrewarding,  but it can also be super helpful to the devs to have that kind of information.

Truly tedious and potentially very unrewarding,  but it can also be super helpful.

I feel like this captures some of the struggles of troubleshooting haha. I may have to do that to get the bottom of it. However, I just got it working by creating a fresh Task object right before I call the repeat function. Not sure why this works, but this is the only change I made...

In Live 10
//global declaration
var myTask = new Task(taskFunction, this);

//Then when the process function needs to call it for x number of repeats
myTask.repeat(x);

In Live 11
//global declaration
var myTask = newTask(taskFunction, this);

//Then when the process function needs to call it for x number of repeats
myTask = new Task(taskFunction, this);
myTask.repeat(x);

nice you found a workaround. If you’re going to do it that way you probably want to call Task.freepeer() before you re-assign myTask to the new Task.  I think that will allow the previous task to be garbage collected.

Thanks, I went back to Live 10 and had new issues. However, adding  arguments.callee.task.freepeer(); at the end of the last iteration of the task fixed those issues so good call!

Now I am noticing that the Live theme is overriding some of my colors in Live 11 causing my UI to look off. It looks like there is precedent for this in the release notes...

8.3.0
Dynamic Colors: new default 'Text / Icon' color follows Live themes 
(I wonder if this means the newobject method will ignore Live themes, but this seems to be outdated and doesn't respond for objects like "textbutton")

8.3.2
Color Selector: theme-aware
Dynamic Colors: preserved for object box borders
Dynamic Colors: restored when loaded in a different Live theme


Currently my only solution is to comment out any custom color choices I made such as...

//dynamicallyCreatedMaxObject.setattr("textcolor", [1,1,1,1]);
//dynamicallyCreatedMaxObject.setattr("bgcolor", [0.259, 0.259, 0.259, 0.722]);

Javascript Forum