I forget. Does TCL have a 'max function? If so, it's just:
Max(0, 1 - ControlPanel.Contrat-Factor)
Steve
Sent from my iPad
On Oct 6, 2012, at 11:48 PM, Jesse Kretschmer <[email protected]> wrote:
> This question does not seem suited for the nuke-dev list, but that's no
> reason to ignore it.
>
> Expressions support a couple things that could help. You could use the
> absolute value:
> abs(1+ControlPanel.Contrast-Factor)
>
> or, you may want to add some logic with a ternary operation (shortand
> if?then:else statement):
> 1+ControlPanel.Contrast-Factor<0?0:1+ControlPanel.Contrast-Factor
>
> There are probably a ton of other ways to solve this problem, but it all
> depends on the context.
>
> cheers,
> jesse
>
> On Sat, Oct 6, 2012 at 7:46 PM, Synicade <[email protected]>
> wrote:
> I have some saturation values controlled by an expression, however when they
> go too far they go into the negatives.
> Is there an expression to stop values from going into the negatives?
>
> Here is the current expression, it might be confusing out of context but it
> basically means Add 1 to the value given by the contrast and subtract by the
> factor
>
> Code:
> 1+ControlPanel.Contrast-Factor
>
>
> Again, values often go into the negatives which looks awful, how do I prevent
> this?
>
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