My Math Forum  

Go Back   My Math Forum > Math Forums > Math

Math General Math Forum - For general math related discussion and news

LinkBack Thread Tools Display Modes
April 30th, 2019, 06:13 PM   #1
Joined: Apr 2019
From: Canada

Posts: 1
Thanks: 0

Looking for something like Penner's Easing Functions, but for larger sets of data

Hey all,

I work in CG, I'm a technical director (I help build tools that facilitate the work of animators in 3D animated productions, VFX and the like).

We work with keyframes a lot, where we store the transforms of certain objects and parts of characters over time.

These keys are represented by curves, that are easily editable in our software suites.

I'm looking for a way to mathematically take a set of keys and apply "overshoot and settle to them. By this I mean I want to take a simplistic transform from say x:1 to x:1000, and then from the curves that creates, calculate an overshoot that looks like a slowly dampening sine wave.

The data set I'll be operating on is a table of frames versus values. What makes it tough, is that there is not necessarily any data for every frame, you can often have a key at one and then another key ten frames later and nothing in between, but the value is "tweened" (there are various tangent options available).

One dead end I had for this was the use of Penner's Easing functions. But the data they operate on is just two keys, one in and one out -- the result is beautiful and perfect, but not appropriate for a bigger set of keys. <-- This is the sort of thing I'm looking to derive.

From a data set like this:

I'm wondering if anyone can help me (even if just to point me to which forum knows this sort of thing best, or just helping me refine my long awkward question).

Last edited by skipjack; May 1st, 2019 at 01:55 AM.
retsynNL is offline  

  My Math Forum > Math Forums > Math

curves, data, easing, functions, graph, larger, overshoot, penner, physics, sets, sine

Thread Tools
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
How to compare 3 sets of data? moss2076 Elementary Math 3 May 27th, 2016 12:54 AM
Relation between two sets of data aspn Elementary Math 7 September 1st, 2015 09:44 AM
Two data sets fitting Simon39 Abstract Algebra 4 November 29th, 2013 09:41 PM
Interpolation of larga data sets godric Real Analysis 1 August 31st, 2012 05:53 AM
Combining 2 data sets Shakarii Advanced Statistics 1 August 10th, 2012 02:32 AM

Copyright © 2019 My Math Forum. All rights reserved.