Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!husc6!m2c!wpi!pawn
From: pawn@wpi.wpi.edu (Kevin Goroway)
Newsgroups: comp.sys.amiga
Subject: Re: sa4d
Keywords: Sculpt Animate keyframe animation
Message-ID: <4284@wpi.wpi.edu>
Date: 26 Sep 89 17:12:07 GMT
References: <0160.AA0160@sosaria> <330@opus.NMSU.EDU>
Reply-To: pawn@wpi.wpi.edu (Kevin Goroway)
Organization: Worcester Polytechnic Institute, Worcester, MA. USA
Lines: 29

In article <330@opus.NMSU.EDU> mlandis@opus.UUCP (Marvin Landis) writes:
>In article <0160.AA0160@sosaria> Chris Brand (wizard@sosaria.UUCP) asks:
>
>> What is the easiest way to produce a proper looking free fall with
>> keyframe animation in Sculpt Animate 4D (or 3D)?
>
>You will need to use several keyframes for the ball to drop, and then again
>for the ball to rise.  In the simple diagram below, I am assuming there is
>the same number of frames between each keyframe:

[nice little picture deleted]

I find that if I add a circle, and then cut it in half (leaving only the
top half) I end up with a nice path for a bouncing ball...
You can duplicate it and shrink it as you like. 
(this can be used to make the ball appear as if it is losing energy)
This would be the global approach, but there is nothing stopping you from
adding a few key frames where you need them, to change the shape of the ball
while it is moving.

>Marvin Landis
>mlandis@nmsu.edu


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