-----Protein Structure Visualization System-----


KEY FEATURES

A three-dimensional graphical visualization system which interprets an
original description language.

An object-oriented language ``3D-Talk',' whose syntax is similar to
English, for the description of graphical objects.

A protein structure manipulation language ``Protein-Talk'' visualizes
and animates three-dimensional protein structures.


INTRODUCTION

This system is built up of two parts, three-dimensional visualization
tool  ``3D-View'' and the protein structure visualization tool
``Protein-View''. ``Protein-View'' generates statements in ``3D-Talk''
and ``3D-View'' interprets them and displays the protein structures.

``3D-View'' is designed to provide users an easy visualization
environment.  ``3D-Talk'' is a graphical object description language
that can describe almost any kind of three-dimensional objects.  The
syntax of this language is similar to that of English. This feature is
quite useful for those inexperienced in computer languages.  The
visualized objects can be manipulated by mouse operations. Users can
rotate, move, and magnify the objects.  The control panel provides
another way to manipulate the objects and the way to change the
configurations and environment.  Also, these operation can be done by
the statements in ``3D-Talk''.

``Protein-View'' reads the data in PDB (Protein Data Bank) and
visualizes the protein structure.  This tool provides a function to
show the topology of of protein structure by ribbons, and provides a
function to change the dihedral angle of chemical bonds for the
animation of molecular dynamics.

This system can be applied for protein structure design or the
simulation of molecular dynamics and other fields of visualization,
such as robot design.


ENVIROMENT
This system can execute on SGI IRIS/4D.


FILES
/proview
atom.c
atom.h
bond.c
bond.h
main.c
method.c
method.h
pdb.c
pdb.h
pdb_io.c
prtalk.c
prtalk.h
matrix/
	d3vector.c     eigenvalue.c   matrix.c
	d3vector.h     eigenvalue.h   matrix.h

/3dview
3dview.c       exit.h         lexical.c      object.c       sphere.c
accept.c       function.c     light.c        object.h       sphere.h
accept.h       function.h     light.h        objecttag.h    symbol.c
boolean.h      gorth.c        location.c     panel.c        symbol.h
box.c          gorth.h        location.h     panel.h        text.c
box.h          group.c        lyyerror.c     parse.tab.c    text.h
color_obj.c    group.h        main.c         parse.tab.h    token.h
color_obj.h    hash.c         make_name.c    parser.c       trackball.c
cylinder.c     hash.h         message.c      parser.h       trackball.h
cylinder.h     header.c       message.h      primitive.c    ui.c
data.c         header.h       messagetag.h   primitive.h    ui.h
data.h         initial.c      node.c         reduce.c       vect.c
event.c        instance.c     node.h         reduce.h       vect.h
event.h        lexbuffer.h    nvect.c        rotation.h


INSTALL
Read the document "INSTALL".


EXECUTION Read the document "DOC" or directory "prtalk" for further
information.