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Fusion expresions - Random change between two values


Clément Bouchet

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Hi Everyone,

I'm trying to build a flicker effect in Fusion. I know there a tool for it but it doesn't behave like I want. (Or I don't know to use it properly)

I want a random change of the exposure or the gamma but between a min and max value I can choose. I want the values to only go lower than the original exposure. (never higher)

Do you know a expression for that?

 

I've tried few things and I've looked online , I've also compared it with the tools in Flame and AE but I failed...

Thank you very much. 🙂

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10 hours ago, Clément Bouchet said:

Hi Everyone,

I'm trying to build a flicker effect in Fusion. I know there a tool for it but it doesn't behave like I want. (Or I don't know to use it properly)

I want a random change of the exposure or the gamma but between a min and max value I can choose. I want the values to only go lower than the original exposure. (never higher)

Do you know a expression for that?

How about this:

:randomseed(time); return random()*(max-min)+min

For example, if you want a random value between 0.8 and 1:

:randomseed(time); return random()*(1-.8)+.8

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