#! /bin/sh

     ###################################### 
     ##### Model Transformation Tools #####
     ######################################

# Bourne shell script: rbg2abg_m
#
###############################################################
## Version control history
###############################################################
## $Id$
## $Log$
###############################################################

# Raw bond graph to structured acausal bond graph: mfile format
# The structured BG is described by four matrices:
#   junctions: describes the junctions -
#     Column 1   Index of component (see components)
#     Column 2.. Indices of bonds on junction (see jbonds)
#                  rows may be padded with zeros
#
#   jbonds:    describes the true bonds -
#     Column 1     Index of component (see components)
#     Column 2     Direction
#                    1 away from junction
#                   -1 towards junction
#     Column 3     Causality 
#                     1 stroke at arrow end
#                    -1 stroke at other end
#                     0 no stroke (ie acausal)
#     Columns 4:5  x,y coordinates of non-arrow end (in Fig)
#     Columns 6:7  x,y coordinates of arrow end (in Fig)
#
#   mbonds:    describes the modulation bonds -
#     Column 1     Index of component at non-arrow end
#     Column 2     Index of component at arrow end
#     Columns 4:5  x,y coordinates of non-arrow end (in Fig)
#     Columns 6:7  x,y coordinates of arrow end (in Fig)
#
#   components: describes the comonents -
#     Column 1     Type of component
#                    0  0-junction
#                    1  1-junction
#                    2  R component
#                    3  C component
#                    4  I component
#                    11 TF component
#                    12 GY component
#                    13 A  component
#     Column 2     Flag for explicit junction
#                    4  Explicit component (4 means text type)
#                    0  Implicit component
#     Column 3-14    fig file information (see fig documentation)
#
# P.J.Gawthrop May 1996
# Copyright (c) P.J.Gawthrop, 1996.


# Remove the old log file
rm -f rbg2abg_m.log
rm -f $1_abg.m
rm -f warning.txt; touch warning.txt

#Inform user
echo Creating $1_abg.m

# Use matrix manipulation to accomplish the transformation
$MATRIX > rbg2abg_m.log  2>>rbg2abg_m.log << EOF

  warningfile = 'warning.txt';
  %Convert from the fig version of the bonds to a structured version
  [rbonds,rstrokes,rcomponents,rports,n_ports] = $1_rbg;
  [bonds,components] = rbg2abg(rbonds,rstrokes,rcomponents,rports,warningfile);

  %Write the function m-file for the causal bond graph
  filename = '$1_abg.m';
  c = '%';
  fprintf(filename, 'function [bonds,components,n_ports] = $1_abg\n');
  fprintf(filename, '%s [bonds,components] = $1_abg\n', c);
  fprintf(filename, '%s Acausal bond graph created by MTT on %s\n\n', ...
                     c, date);
  mat2mfile(bonds, 'bonds', filename);
  mat2mfile(components, 'components', filename);
  fprintf(filename, 'n_ports = %1.0f;\n', n_ports);


EOF

cat warning.txt