function cbg2fig(system_name, ...
system_type, full_name, ...
stroke_length, stroke_thickness, stroke_colour, ...
comp_font, comp_colour_u, comp_colour_o)
% $$$ cbg2fig(system_name, ...
% $$$ system_type, full_name, ...
% $$$ stroke_length, stroke_thickness, stroke_colour, ...
% $$$ comp_font, comp_colour_u, comp_colour_o)
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %%%%% Model Transformation Tools %%%%%
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Matlab function cbg_m2fig
% Causal bond graph: mfile format to fig file format
% The resultant fig file is the original _abg.fig with
% additional causal strokes superimposed.
%
% P.J.Gawthrop May 1996
% Copyright (c) P.J.Gawthrop, 1996.
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% Version control history
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% $Id$
% %% $Log$
% %% Revision 1.2 1996/08/05 20:15:39 peter
% %% Prepared for recursive version.
% %%
% %% Revision 1.1 1996/08/05 18:12:25 peter
% %% Initial revision
% %%
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
if nargin<4
stroke_length = 20;
end;
if nargin<5
stroke_thickness = 2;
end;
if nargin<6
stroke_colour = 1; %Blue
end;
if nargin<7
comp_font = 18; %Helvetica bold
end;
if nargin<8
comp_colour_u = 12; %Green
end;
if nargin<9
comp_colour_o = 4; %Red
end;
% Create the (full) system name
if length(full_name)==0
full_name = system_name;
system_type = system_name;
else
full_name = [full_name, '_', system_name];
end;
full_name_type = [full_name, '_', system_type];
fig_name = [full_name_type, '_cbg.fig'];
% Return if cbg file doesn't exist
if exist(fig_name)~=2
return
end;
% Setup file - append to the fig file
filenum = fopen(fig_name, 'a');
% Get the raw and the processed bonds
eval(['[rbonds,rstrokes,rcomponents] = ', system_type, '_rbg;']);
eval(['[bonds] = ', system_type, '_abg;']);
% Get the causal bonds
eval(['[cbonds,status]=', full_name_type, '_cbg;']);
% Check sizes
[N_components,Columns] = size(rcomponents);
if (Columns ~= 13)
error('Incorrect rcomponents matrix: must have 13 columns');
end;
M_components = Columns;
% Rotation matrix
rot = [0 -1; 1 0];
% Determine coordinates of the arrow end of the bond and the other end
% and other geometry
other_end_1 = rbonds(:,1:2);
arrow_end = rbonds(:,3:4);
other_end_2 = rbonds(:,5:6);
distance_1 = length2d(other_end_1 - arrow_end);
distance_2 = length2d(other_end_2 - arrow_end);
which_end = (distance_1>distance_2)*[1 1];
one = ones(size(which_end));
other_end = which_end.*other_end_1 + (one-which_end).*other_end_2;
arrow_barb = which_end.*other_end_2 + (one-which_end).*other_end_1;
arrow_vector = arrow_barb-arrow_end;
unit_arrow_vector = arrow_vector./(length2d(arrow_vector)*[1 1]);
bond_vector = (arrow_end - other_end);
unit_bond_vector = bond_vector./(length2d(bond_vector)*[1 1]);
unit_stroke_vector = (rot*unit_bond_vector')';
% Get indices of bonds with changed causality
changed_e = bonds(:,1)~=cbonds(:,1);
changed_f = bonds(:,2)~=cbonds(:,2);
changed = changed_e|changed_f;
index_e = getindex(changed_e,1)';
index_f = getindex(changed_f,1)';
index = getindex(changed,1)';
% Print the new strokes in fig format
if index(1,1)>0
for i = index_e % Do the effort stroke - opp. side to arrow
if cbonds(i,1)==1 % Stroke at arrow end
stroke_end_1 = arrow_end(i,:);
else
stroke_end_1 = other_end(i,:);
end;
sig = sign(unit_arrow_vector(i,:)*unit_stroke_vector(i,:)');
stroke_end_2 = stroke_end_1 - stroke_length*sig*unit_stroke_vector(i,:);
%print the fig3 format firstline spec.
polyline = 2;
firstline = fig3(polyline,stroke_thickness,stroke_colour);
fprintf(filenum, '%s\n', firstline);
fprintf(filenum, ' %4.0f %4.0f %4.0f %4.0f \n', ...
stroke_end_1(1), stroke_end_1(2), ...
stroke_end_2(1), stroke_end_2(2) );
end;
for i = index_f % Do the flow stroke - same side as arrow
if cbonds(i,2)==1 % Stroke at arrow end
stroke_end_1 = arrow_end(i,:);
else
stroke_end_1 = other_end(i,:);
end;
sig = sign(unit_arrow_vector(i,:)*unit_stroke_vector(i,:)');
stroke_end_2 = stroke_end_1 + stroke_length*sig*unit_stroke_vector(i,:);
%print the fig3 format firstline spec.
polyline = 2;
firstline = fig3(polyline,stroke_thickness,stroke_colour);
fprintf(filenum, '%s\n', firstline);
fprintf(filenum, ' %4.0f %4.0f %4.0f %4.0f \n', ...
stroke_end_1(1), stroke_end_1(2), ...
stroke_end_2(1), stroke_end_2(2) );
end;
end;
% Print all the components - coloured acording to causality.
for i = 1:N_components
fig_params = rcomponents(i,3:M_components);
coords = rcomponents(i,1:2);
if status(i)==-1 %Then under causal
fig_params(3) = comp_colour_u;
fig_params(6) = comp_font;
end;
if status(i)==1 %Then over causal
fig_params(3) = comp_colour_o;
fig_params(6) = comp_font;
end;
%Now print the component in fig format
eval(['[comp_type,comp_name] = ', system_type, '_cmp(i);']);
Terminator = '\\001';
for j = 1:length(fig_params)
fprintf(filenum, '%1.0f ', fig_params(j));
end;
fprintf(filenum, '%1.0f %1.0f ', coords(1), coords(2));
fprintf(filenum, '%s:%s%s\n', comp_type, comp_name, Terminator);
% If it's a subsystem, do the fig file for that as well
cbg2fig(comp_name, ...
comp_type, full_name, ...
stroke_length, stroke_thickness, stroke_colour, ...
comp_font, comp_colour_u, comp_colour_o);
end;
% Close the file
fclose(filenum);
return