Animation
The method used to animate (make a movie from) 3D data is described.
Method
- Check that your program produces the proper output. Your output
should produce a series of data files, each with a different name.
For our example we used a C code to solve the
Two-Dimensional Schrodinger Equation for a wave packet colliding with a
potential barrier. This code yields output data files for each time step of the form:
run1.0001
run1.0002
run1.0003
.
.
.
- Run a korn shell script to generate the animation.
- We have found several procedures to create the movies.
- Use
xanim or mpeg_play to view the FLI
or MPEG movie on the workstation.
Here are some sample MPEG's you can download
Two-dimensional soliton small(574K)
two-dimensional soliton large(44.6M)longer time
sequence
Here are some MPEGS of a single wave packet traveling through a double-
slit
wave-packet slit small(1.7M)
wave-packet slit large(4.6M)longer time
sequence
FLI Movies(more to come)
wave-packet slit large(1.8M)As long as the movie
above.
If you don't have a movie player, you can watch the movie from here using netscape 2.x.
Two Wave Packets Colliding (My M.S. Thesis Work)
Colliding Wave Packets large(5.5M)
Here is a new interactive Chaotic Pendulum
demo!!!!!
(This Demo uses all of the animation techniques)
Unix Software Needed For Animation
- NetPBM package
- Converts ppm files to GIF
- Site
to obtain package from
- Unix Mpeg Player
- Plays movies with Unix
- available from site
- MPEG Encoder
- Creates MPEG movies with Unix
- FBM2FLI package
- Creates FLI movies with Unix
- FBM package
- Provides some graphics handling and manipulation code with Unix
- Site
to obtain package from
- Xanim
- Plays a wide variety of animations with Unix
- Site
to obtain package from
Macintosh Software Needed For Animation
- Fetch
- Used to transfer files over a network
- Available at site
- Graphic Converter
- Used to convert GIF to Quicktime movie (among other things)
- Available at site
- Qucktime Player
- Used to play the Quicktime movies
- Available at
site
- Sparkle
- Used to play the Quicktime Movies and convert them to MPEG's
- Available at
site
The output of the executable code generates all of the data files and the
script creates all the gifs and combines them into a movie.
- Generic form:
% makedata {initial data number} {final data number}
{base name of animation}
- Specific example:
% makedata 0 900 tdsol
- Files created:
tdsol.mpg or tdsol.fli.
- An annotated korn shell script. This script has
different portions depending which animations you would like to create.
Creating FLI, MPEG, and Gif89a Movies:
- Use
FBM2FLI package to combine GIFS into a FLI movie.
- Use
MPEG package to combine U,Y and V files into a MPEG movie.
- Here is a sample
cgi script
written in perl to make the FLI or MPEG
movies using the code to solve the equation. The script is designed to
output the results to a web page.
- Use a
Movie Player to view the movie.
- A good UNIX player is Xanim, it plays just about everything.
- Alternatively,
Sparkle, an MPEG
player on the Mac also can play Quicktime movies.
For making the movie on a mac
- Make the gifs using the korn shell script
- Use
Fetch on the Mac to transfer the GIFS from
the workstation to the Mac.
- Use
Graphic Converter on the Mac to convert
the GIFS to a Quicktime
movie.
- Use
Movie Player to view the movie on the Mac.
- Alternatively,
Sparkle, an MPEG
player on the Mac also can play Quicktime movies.
- Use
Sparkle on the Mac to convert the Quicktime
movie to an MPEG movie, the type which can be viewed on workstations.