Interpolation woes

tatiang

It may be that I've stumbled across the already documented Interpolation issue with extremes (values near the "interpolate to" value), but here's the problem I'm having:

I am interpolating self.color.Alpha from 0.3 to 0.7 in game.Seconds seconds. If I change game.Seconds to 5, it reaches self.color.Alpha=0.7 in 3.7 seconds. Same issue? I've seen http://forums.gamesalad.com/discussion/54962/make-your-own-interpolations and may resort to it if I have to.

I thought I could work around this by having it Interpolate to 0.8 (or even 1) in 5 game.Seconds seconds but I'm not having much luck.

RThurman

@tatiang -- I realize you figured out another way. But perhaps someone might find this useful. Its uses a standard formula for linear interpolation.

tatiang

The actual implementation I'm working on is a 60 second interpolation of self.color.Alpha to fade in an actor. I need it to stop at 0.7 and then I change it to 1.0 to show that the actor/button is available again. But it's finishing in 47 seconds. Here's the demo with the 5 second example above.

tatiang

It looks like there's a factor of about 1.3333 difference between the attribute values (e.g. 60 seconds) and the stopping point (e.g. 47 seconds). I've tested it up to 5 minutes and 1.3333 seems about right. But I'm not confident that will work for larger/longer values.

beefy_clyro

@socks is your man for the interpolation woes

tatiang

I figured out another way to do this.