RT anim 0.1

You can see an animation like a series of static image. This package helps you to build
a series of .rt file automatically. It is allowed only linear moviments of
objects, lamps or view.

You write a template of a .rt file, with some values non defined. You will use some special 
identifiers instead the numbers, with '$' as first character. ( Es. $pos or $radius ):
RT anim will subst then for you. ( macro substitution ).

This program can subst only real number.
You must write two file, with the same name ( in the example "rt1" ), and with
extension .phd e .rtm.
The .rtm is a normal .rt file in which you have changed same real value with
macro. A macro is an '$' followed by an identifier ( es. $radius ). It is a
value which will vary from frame to frame.
The .phd file defines how the macro values changes.

Example of .phd file :

frames 50
ypos ( 0 , 24 ) from -1.0 to 1.0
ypos ( 25 , 49 ) from 1.0 to -1.0
green ( 0 , 49 ) from 0.9 to 0.5
.

you must always include the first line ( frame xxx ) which defines the number
of frames that will be generated.
The next lines defines the value of the macro. A line can define only a subset
of the values of a macro.
The are all in the form :

nnnn ( start_frame , end_frame ) from first_value to last_value 

where
nnnn           is the name of the macro.
start_frame    is the first frame where you define the value of nnnn.
end_frame      is the last frame where you define the value of nnnn.
first_value    is the value that nnnn assumes in the fist frame.
last_value     is the value that nnnn assumes in the last frame.

The program will compute the correct value for each frame; it
will suppose that values will vary like in a line.

When you have the .phd and .rtm files, for example rt1.phd and rt1.rtm,
type

     banim rt1 rt

rt is the prefix for the frames ( it will generate file in the form "rt****.rt" ).
banim will generate also a file rt1.lst which list all the frames.

To render the frames you need the RT raytracer, you can use the multiple drag and
drop.

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If you are interested on this program, you have created some good images or
you have found some bugs please send a mail to me.

My mail is sergio.per@iol.it.

You can write to:

     Sergio Perani
     Via Filippo Turati, 27
     05100 Terni ( TR ) , Italy

The actual home page for RT program is :

http://www.cdc.polimi.it/~tcug0320/RT

if the page is moved you can find where on yahoo in

     Computers/Graphic/Raytracing

The link should be : RT raytracing



