[jmsl] Max instrument dimension names

[jmsl at music.columbia.edu]

Okay, I figured out what was up...

I had assumed that MusicShape.get() would return a *reference* to the  
double[], but it appears to return a deep copy. So, I was making  
alterations (duration, in particular) to the copy as notes were being  
entered, and then playing back the original. To quote the infinitely  
wise Homer: "Doh!"

I have to admit, it seems a little un-Java-like, to me, for  
MusicShape.get() to return copies, not references. I can see it being  
handy, in some cases, but it's a little counter-intuitive, imho. I  
guess this is so Interpreters can mess around with the double[]  
without altering the original held by the MusicShape, but it might be  
more Java-like if the Interpreter made the copy, rather than the  
MusicShape. Just a thought... I'm sure there are plenty of good  
reasons for doing it the way it's done, but it might be good to make  
this behaviour more obvious in the docs.

(Or maybe I'm way off on my diagnosis of what solved my problem, and  
MusicShape.get() does return a reference to the double[]...???)

Anyway, problem solved!

J.


On 13-Sep-08, at 2:05 PM, jmsl at music.columbia.edu wrote:

> hmmm... Weird problem. I decided it would be simplest to just align  
> my MusicShape's dimensions with the MaxInstrument's dimensions,  
> adding on a few extras for specific purposes. So, my dimensions seem  
> to be in agreement. The only thing that's not working properly is  
> that playback seems to be switching Hold for Duration - i.e., it's  
> packing my notes right up against one another, ignoring any spaces/ 
> rests. That is, if I put single sixteenth notes on each of 4 quarter- 
> note downbeats, I get a run of sixteenths, rather than a run of 4  
> quarter-notes, with sixteenth-note "holds"...
>
> I know this is probably not possible to diagnose without seeing the  
> code, but I thought I'd ask, just in case there's some obvious  
> misunderstanding that would result in this behaviour.
>
> thanks,
>
> J.
>
>
> On 13-Sep-08, at 9:48 AM, jmsl at music.columbia.edu wrote:
>
>> Hi J
>>
>> If you play your MaxInstrument with a MusicShape then MusicShape  
>> will do the translation element by element, right before it calls  
>> instrument.play()
>> The instrument itself does not do any translating; by the time it  
>> has its play() method called, all it gets is a timestamp and an  
>> array of double[].
>> So translating is the responsibility of whoever calls ins.play()
>>
>> Follow-up questions welcome!
>> Nick
>>
>> jmsl at music.columbia.edu wrote:
>>> Aaah, thanks so much Nick. I was starting to lose my mind!
>>>
>>> I'm assuming then that I can just add my custom dimensions from  
>>> 5+, then let the built-in translator figure out the name->index  
>>> mapping... Yes?
>>>
>>> J.
>>>
>>>
>>> On 13-Sep-08, at 9:16 AM, jmsl at music.columbia.edu wrote:
>>>
>>>> Hello J
>>>>
>>>> Yes you can add custom dimensions to MaxInstruments, try this:
>>>>
>>>> myMaxInstrument.getDimensionNamespace().setDimensionName(5,  
>>>> "wiggle");
>>>> myMaxInstrument.getDimensionNamespace().setLimits(5, 0, 3);
>>>> myMaxInstrument.getDimensionNamespace().setDefault(5, 0);
>>>> Remember to leave dimension 4 as it is alrteady defined in  
>>>> MaxDimensionNameSpace ("eventflag")... so you should only add  
>>>> custom dimensions from 5 on up
>>>>
>>>> Thanks
>>>> Nick Didkovsky
>>>>
>>>> jmsl at music.columbia.edu wrote:
>>>>> Hi All,
>>>>>
>>>>> I can't figure out how I'm supposed to set my Max Instrument's  
>>>>> dimension names?? I have a custom namespace for the basic  
>>>>> MusicShape I'm using, and I obviously need Max to understand  
>>>>> that namespace, and use its formatting. But I can't see any  
>>>>> direct way to other than SetDimensionNameSpace(), which appears  
>>>>> to only take an existing DimensionNameSpace... If I could take  
>>>>> that from my MusicShape directly, I'd be fine, but MusicShape  
>>>>> only has a dimensionNames() method, not a  
>>>>> "getDimensionNameSpace()" method...
>>>>>
>>>>> Needless to say, I'm confused.
>>>>>
>>>>> J.
>>>>>
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