Nice!
2014-01-27 Alok Gandhi <alok.gandhi2...@gmail.com> > It depends on how you want to interpolate. As the relation may not be > necessarily linear, there could be infinitely many ways in which the > interpolation can happen. > > Take a look at my drawing <http://imgur.com/bM8Gx2H> to see what I mean. > > I suggest an fcurve into the expression will be of great use as you can > completely control the interpolation. It seems that either ICE or link with > parameters are a better choice. > > However, if you want to use expressions, it is simply a condition of > selecting one of the two equations straight line: > > Here is the expression that you can use on Eyefix: > *cond( Slider <= 0.2, Slider / 0.2, ( 1 - Slider ) / 0.8 )* > > This expression will properly interpolate and even extrapolate( for value > of slider outside the interval (0, 1)) > > Please note that the expression is in condensed form based on the values > you provided : (0,0), (0.2, 1.0), (0, 1.0). If you change your point of > choice from 0.2 to some other value then this expression needs to be > changed. > > I have not included the method to derive this expression for the reason of > being succint but it simply is an implementation of two equations of > straight lines through two points plugged into a condition statement. > > Good luck! > > > Alok. > > > On Mon, Jan 27, 2014 at 12:20 PM, Emilio Hernandez <emi...@e-roja.com>wrote: > >> Yeah. ICE, ICE, Baby. >> >> >> >> >> 2014-01-27 Matt Morris <matt...@gmail.com> >> >> I'd go the ice route as well, not least because you can add an fcurve >>> node to control the amount of influence over the 0 - 1 range, so its a link >>> with but without the keys or curves appearing in the character's >>> dopesheet/ae. >>> >>> >>> On 27 January 2014 16:56, Will Sharkey <willjshar...@gmail.com> wrote: >>> >>>> great stuff, I'll try both but I might just go down the ICE route. >>>> >>>> Thanks again. >>>> >>>> >>>> On Mon, Jan 27, 2014 at 4:19 PM, Emilio Hernandez <emi...@e-roja.com>wrote: >>>> >>>>> It will work faster in ICE with the described method as you bypass the >>>>> shape manager, or the animaton mixer. And go direct to the cluster to grab >>>>> the point data as you are direclty adding the point positions. You can >>>>> also drive the point positions with a weightmap as well, multiplying the >>>>> output value by the weightmap, before setting the point positions again on >>>>> itself. And it's easy to debug than getting, as Sergio said an expression >>>>> to interpolate the weight of the shape. >>>>> >>>>> Cheers! >>>>> >>>>> >>>>> >>>>> >>>>> 2014-01-27 Will Sharkey <willjshar...@gmail.com> >>>>> >>>>> Yeah, I would need the values interpolated. I could do it in ICE but I >>>>>> thought it would be nice to keep it as a simple expression. >>>>>> >>>>>> Thanks for the help. >>>>>> >>>>>> >>>>>> On Mon, Jan 27, 2014 at 3:47 PM, Emilio Hernandez >>>>>> <emi...@e-roja.com>wrote: >>>>>> >>>>>>> Yes you can do it with expressions. >>>>>>> >>>>>>> It is a nested conditional. cond >>>>>>> (slider=0,eyefix=0,cond(slider=.2,eyefix=1,cond(slider=1,eyefix=0,0))). >>>>>>> But I wouldn't suggest this approach. There is an easiest way to do it >>>>>>> in >>>>>>> ICE. >>>>>>> >>>>>>> https://vimeo.com/84282621 >>>>>>> >>>>>>> >>>>>> >>>>> >>>> >>> >>> >>> -- >>> www.matinai.com >>> >> >> > > > -- >
