On 6/7/2011 10:52 AM, Duncan Murdoch wrote:
Something like this works:
play3d(par3dinterp(times=c(0,5,6,11,12,17),
userMatrix=list(m1,m1,m2,m2,m3,m3),
method="linear"))
The "linear" says to use linear interpolation between time points, so
it will stay exactly constant when the userMatrix doesn't change. If
you leave it out, it uses spline interpolation, and that gives some
irritating overshooting.
Thanks very much for this, Duncan.
Something like this would make an excellent documentation example for
play3d/movie3d, or perhaps better
par3dinterp, even under \dontrun{}.
I take it that the times are relative rather than absolute, and time is
scaled according to duration and
fps when the scene is play3d()'d. Yes? If so, the description for
time= could also be clarified.
best,
-Michael
--
Michael Friendly Email: friendly AT yorku DOT ca
Professor, Psychology Dept.
York University Voice: 416 736-5115 x66249 Fax: 416 736-5814
4700 Keele Street Web: http://www.datavis.ca
Toronto, ONT M3J 1P3 CANADA
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