[PD] acceleration - deceleration between coordinates - how to do this?

[Thomas Jeppesen]

Great - Thank you very much. I'll take a look in the mapping library.

Cheers,
Thomas

Hans-Christoph Steiner wrote:
>
> There are lots of curve objects in the mapping library for this.  The 
> mapping lib works on all 0-1 range, so make your [line] generate a 
> ramp from 0 to 1 in the time you want.  Then after the [line], use a 
> curve object.  They are named after the shape and types of segment.
>
> shape:
>     sigmoid (S-shaped)
>     seat (like you sit in)
>
> types:
>     breakpoint
>     cubic
>     quartic
>     circular
>     elliptical
>     etc...
>
> I'd start with [exponential_sigmoid].  You'll most likely want a 
> sigmoid shape for the accel/deccel pattern you describe.
>
> .hc
>
>
> On Mar 16, 2010, at 3:59 PM, Thomas Jeppesen wrote:
>
>> Hi guys,
>>
>> I'm working on a patch (rjdj scene) where I'm moving a little object 
>> around on a plane. The object is been given random coordinates which 
>> it is supposed to gradually move to in five seconds.
>>
>> Right now my solution is to bang the x- and y-coordinates into a 
>> line-object which works fine, but I'd prefer for the movement to be 
>> more "natural". By natural I mean that the object accelerates in the 
>> beginning and then decellerates near the end until it comes to a full 
>> stop at the exact coordinates that where randomly produced..
>>
>> I've been trying to get my head around a solution for quite a while 
>> now, but unfortunately no luck so far.
>>
>> I'm sure this must be simple stuff for some of you PD-geniuses out 
>> there, and I'm hoping that one of you will stand up and show me how 
>> it's done :)
>>
>> Thanks in advance,
>> Thomas :)
>>
>>
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