(MEL) attrFieldSliderGrp -step flag doesnt fully work

[absoluteKelvin]

window -title "Attr Field Slider Groups";
    string $objName[] = `sphere`;
    columnLayout;
    attrFieldSliderGrp -min -10 -max 10 -step 2 -at ($objName[0]+".tx");
showWindow;

using the mel example from doc with -step flag set to 2 increments. Only works when ctrl + middle click is held. just dragging the slider doesn't increment at 2.

According to documentation this is suppose to work.

https://help.autodesk.com/cloudhelp/2020/ENU/Maya-Tech-Docs/Commands/attrFieldSliderGrp.html 

-step(-s)           float                C Q E

Sets the increment for both the slider and float field.

[absoluteKelvin]

i have been searching and found a workaround. but cant seem to get it to run properly

{
   string $window = `window -title "intSliderGrp Example"`;
   string $slider = ($window + "Slider");
   int $step=3;
   columnLayout -columnAlign "right";
      intSliderGrp -l "Even" -f 1 -step $step -fs $step
         -cc ("intSliderGrp -e -v ((intSliderGrp -q -v "+$slider+") - (fmod(float(intSliderGrp -q -v "+$slider+"), "+$step+"))) " + $slider)
         $slider;
   showWindow;
}
// Error: Line 1.53: Invalid use of Maya object "v". // 

any ideas?

[Rourker27]

Well you are using fmod here and you are using an intSliderGrp. You won't need to cast your ints as floats to use fmod with if you use an integer modulo (%). I did look at the -step flag, and as you say, it isn't working properly.

This is a pretty hacky work around for it and it is similar to what you are trying to do:

string $window = `window -title "intSliderGrp Example"`;
string $slider = ($window + "Slider");

proc stepChange()
{
    int $step=3;
    int $changeNum;
    $sliderVal = `intSliderGrp -q -v slider`;
    print($sliderVal);
    if ($sliderVal % $step != 0)
    {
        $changeNum = $sliderVal - $sliderVal % $step;
        intSliderGrp -e -v $changeNum slider;
    }
}

columnLayout -columnAlign "right";
   intSliderGrp -l "Even" -f 1 -step $step -fs $step -cc stepChange slider;
showWindow;

[absoluteKelvin · Accepted solution]

thanks for that. Rourker27.

end up with this using your suggestion.

{
string $window = `window -title "intSliderGrp Example"`;
global string $slider;
$slider = ($window + "Slider");

proc stepChange()
{
    int $changeNum;
    $sliderVal = `intSliderGrp -q -v $slider`;
    //print($sliderVal);
    if ($sliderVal % 2 != 0)
    {
        $changeNum = $sliderVal + ($sliderVal % 2);
        intSliderGrp -e -v $changeNum $slider;
    }
}

columnLayout -columnAlign "right";
   intSliderGrp -l "Even" -f 1 -step 2 -fs 2 -cc stepChange $slider;
showWindow;
}

[Rourker27]

Looks good to me, I doubt you need the -step and -fs flags, but they aren't doing anything anyway so no harm I guess. I hope this gets a proper fix at some point.