Re: [chuck-users] how do I assign a Blit array with a BlitSquare array?

2 Feb 2014

      Hello George,

You have an interesting point there. I wanted to suggest to you that you wrap your BlitSaw in an extension of a Chubgraph class, but that also doesn't work!
It appears to me that Chuck in general doesn't let you assign arrays from subclasses to superclasses: a bit of a surprise indeed!

For example :
class ClassA {
    float v;
    fun float value() {
        return v;
    }
}

class ClassB extends ClassA {	
    fun float value() {
        return v * 2;
    }
}

ClassA myObjectA;
ClassB myObjectB;

//ChucK allows: 

myObjectB @=> myObjectA;

//but does not for arrays :-(

ClassA myObjectArrayA[10];
ClassB myObjectArrayB[10];

myObjectArrayB @=> myObjectArrayA; // gives error 

Of course there are less pretty ways of achieving what you need, probably by just switching the routing of the UGens :
BlitSaw blitSaw[10];
BlitSquare blitSquare[10];

Gain output; // => or the rest of your patch

for (int i;i output;
	blitSaw[i] => output;
}

for (int i;i output;
        blitSquare[i] => output;
}

Happy chucking!
Casper

Casper Schipper
casper.schipper@gmail.com
www.casperschipper.nl
+316 52322590

On 2 feb. 2014, at 18:00, chuck-users-request@lists.cs.princeton.edu wrote:
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Today's Topics:
1. how do I assign a Blit array with a BlitSquare array?
     (George Locke)
From: George Locke 
Subject: [chuck-users] how do I assign a Blit array with a BlitSquare array?
Date: 2 februari 2014 17:18:13 CET
To: ChucK Users Mailing List 
Reply-To: ChucK Users Mailing List 
Hi,
I have a class that I want to use either (multiple) BlitSquare or BlitSaw oscillators, where i can switch between them during performance.  I thought the easiest way would be to have a single Blit array that holds either, but apparently I can't do this:
BlitSquare pls[10];
BlitSaw saw[10];
Blit osc[10];
if (choosePulse) {
pls @=> osc;
} else {
saw @=> osc;
}
Any suggestions?
How is the Blit type ever to be used if not in this way?
(My chuck experience is limited, but I am an experienced programmer.)
Regards,
George
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