>I was trying to animate the process of multiple particle collisions
with
> generated data by another program. The data file contains position,
> translational velocity & angular velocity for N particle on T steps. I

> used #while-#end directive and  a counter "istep"  trying to read in
> data for all T steps, but it seems that it repeatedly  read data for
> first step. Could anybody help me out?  With my thanks in advance.
>
> david

I was redirected to post this question here. I figured it out why but
still
need help.

Every time POV-Ray reads an external file, it starts from the first
record.
So what I did was to read in N*clock*#IFF for current  "clock",  and
skip
first N*(clock*#IFF -1). The approach is very inefficient if the data
file
is big. I was wondering if anybody has better idea. Thanks.

David

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