Re: [Jsynthlib-devel] FW: Re: What is the JSL way to deal with negative param values?

[Steven S. <ste...@co...>]

Bill Zwicky wrote:

> Steven Schmidt wrote:
>
>> I’ve been casting it as a byte and while it seems to work up to a 
>> point – I’m not getting the negative values to display.    
>> I thought it should work the way I’m doing it, but it stops at zero.  
>> Please have a look at this snippet and make recommendations if you 
>> can:  
>> The purpose of this method is to subtract the max value for the 
>> widget if the param value is greater than the max value.  
>
> You realize that "the math" prints get()+max-max, which is the same as 
> rawval? So if rawval has the right value, then you don't have a 
> problem. What is the value for min and max? If max is less than zero 
> but the spinner control itself won't go negative, then we have a bug. 
> Try using a SliderWidget, I know those work.
>
> -Bill

Yes - min val is less than zero and the spinner won't go negative, 
although it does go negative in other instances.
This:

addWidget(p21_osc18va, new SpinnerWidget("**Tune", patch, -1200, +1200, 
-128,
                new TritonMultiCompModel(patch, 311, 1,1200), new 
TritonSender(311)), 3,
                8, 1, 1, 15);

displays the correct value of -5 for the MSB/LSB combo of  7f 7b
(I haven't looked at why I had to subtact 128 (base val) to get it 
right, but that's a suspiciously even number)
So, have we a bug?  I'll try a slider and see if I have the same problem 
and report back.