function [bonds,components] = rbg2abg(name,rbonds,rstrokes,rcomponents,port_coord,port_name,infofile)
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% Version control history
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% $Id$
% %% $Log$
% %% Revision 1.19 1997/08/14 11:59:47 peterg
% %% Vector ports added!!
% %%
% %% Revision 1.18 1997/08/14 11:01:42 peterg
% %% Reordered algorithms as follows:
% %% bond end coordinates
% %% associate port labels with bonds (port_bond)
% %% associate bonds with components
% %% unsorted list of bonds on each component (components)
% %% interpret strokes and setup the causality of the bonds (bonds)
% %% expand vector ports & add new bonds and connections
% %% sort bonds on each component according to the labels -- two ports
% %% default included here.
% %%
% %% Revision 1.17 1997/08/09 11:31:16 peterg
% %% Default two port list is [in;out] (or [out;in])
% %% Dont do global default if no ports labels.
% %%
% %% Revision 1.16 1997/08/07 16:12:36 peterg
% %% Fixed sorting bug: now puts the jth component from the unsorted list
% %% into the kth component of the sorted list .. not vice versa!
% %%
% %% Revision 1.15 1997/08/06 21:43:19 peterg
% %% Corrected error in creating component list: the kth component of the
% %% list is given by the jth component of the original list NOT vice
% %% versa.
% %%
% %% Revision 1.14 1997/08/04 14:18:55 peterg
% %% If no ports labels at all, just use the default component list.
% %%
% %% Revision 1.13 1997/08/04 12:50:39 peterg
% %% Many bug fixes to the named port version + tied up the logic and
% %% supporting comments.
% %%
% %% Revision 1.12 1997/08/02 19:37:53 peterg
% %% Now uses named ports.
% %%
% %% Revision 1.11 1997/04/29 09:12:37 peterg
% %% Added error message if port label near to >1 bond.
% %%
% %% Revision 1.10 1997/03/17 13:45:42 peterg
% %% Added more error info.
% %%
% %% Revision 1.9 1996/12/31 11:25:57 peterg
% %% Clearer error messages for incorrect ports.
% %%
% %% Revision 1.8 1996/12/04 21:52:39 peterg
% %% Now uses fopen.
% %%
% %% Revision 1.7 1996/11/01 18:01:57 peterg
% %% Rationalised port ordering.
% %% Fixed port bug.
% %%
% %% Revision 1.6 1996/08/25 08:27:14 peter
% %% Now checks ports correctely - I hope.
% %%
% %% Revision 1.5 1996/08/24 19:21:26 peter
% %% More specific error messages.
% %%
% %% Revision 1.4 1996/08/24 18:00:33 peter
% %% Fixed bug with finding ports.
% %%
% %% Revision 1.3 1996/08/09 08:26:35 peter
% %% Cosmetic tidy up.
% %%
% %% Revision 1.2 1996/08/04 18:37:57 peter
% %% Fixed no causal strokes bug.
% %%
% %% Revision 1.1 1996/08/04 18:30:14 peter
% %% Initial revision
% %%
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
if nargin<5
infofile='stdout';
else
fnum = fopen(infofile, 'w');
end;
%Default to no components
components = [0];
% Xfig scaling factor
scale = 1200.0/2.54546;
% Rotation matrix
rot = [0 -1; 1 0];
% Find number of strokes
[n_strokes,columns] = size(rstrokes);
if (columns ~= 4)&(n_strokes>0)
error('Incorrect rstrokes matrix: must have 4 columns');
end;
% Find number of bonds
[n_bonds,columns] = size(rbonds);
if (columns ~= 6)&(n_bonds>0)
error('Incorrect rbonds matrix: must have 6 columns');
end;
% Find number of components
[n_components,columns] = size(rcomponents);
% Find the number of ports refered to within the component
[n_ports,columns] = size(port_coord)
% Determine coordinates of the arrow end of the bond and the other end
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_vector = ( which_end.*other_end_2 + (one-which_end).*other_end_1 ) - ...
arrow_end;
% Locate the bond end nearest to each port
% col 1 of port_near_bond contains a signed bond number (+ for arrow end)
% col 2 of port_near_bond contains the corresponding port index
port_bond = [];
for i = 1:n_ports
near_bond = adjbond(port_coord(i,1:2),arrow_end,other_end);
[rows,cols]=size(near_bond);
if rows>1
error(sprintf ...
("A port is near to more than one bond at coordinates %g,%g\n", ...
port_coord(i,1)/scale, port_coord(i,2)/scale));
end;
%The (signed) bond corresponding to the ith port label
port_bond(i) = near_bond(1)*sign(1.5-near_bond(2));
end;
%We now have the (signed) bond (port_bond(i)) correponding to the
% ith port label within the component
% Locate the components at the ends of each bond
% col 1 of comp_near_bond contain the component nearest to the arrow end
% col 2 of comp_near_bond contain the component nearest to the other end
for i = 1:n_bonds
comp_near_bond(i,:) = adjcomp(arrow_end(i,:),other_end(i,:),rcomponents);
end;
% We now have a list (comp_near_bond) of the component(s) at each end
% of each bond
% Now do a list of the bonds on each component - unsorted at this stage.
components = [];
for i = 1:n_components
% There are n_comp_bonds bonds on this component with corresponding index
[index,n_comp_bonds] = getindex(comp_near_bond,i);
% Create the signed list of bonds on this component
one = ones(n_comp_bonds,1);
bond_list = index(:,1); % bond at component
bond_end = index(:,2); % which end of bond at component?
direction = -sign(bond_end-1.5*one);
signed_bond_list = bond_list.*direction;
components = add_bond(components,signed_bond_list',i);
end;
components
% Deduce causality from the strokes (if any) and create the list of bonds
causality = zeros(n_bonds,2);
if n_strokes>0
% Find out location of centre and ends of stroke.
stroke_end_1 = [rstrokes(:,1) rstrokes(:,2)];
stroke_end_2 = [rstrokes(:,3) rstrokes(:,4)];
stroke_centre = (stroke_end_1 + stroke_end_2)/2;
stroke_vector = (stroke_end_1 - stroke_end_2);
stroke_length = length2d(stroke_vector);
% Deduce bond causality from the strokes
for i = 1:n_strokes
stroke = [stroke_centre(i,:)
stroke_end_1(i,:)
stroke_end_2(i,:)];
% Find the nearest bond end.
[index,distance] = adjbond(stroke(1,:),arrow_end,other_end);
if (distance>2*stroke_length(i))
info = sprintf('Stroke at (%4.3f,%4.3f) is %4.3f away from the nearest bond\n', ...
stroke(1,1)/scale, stroke(1,2)/scale, distance/scale);
end;
% Bond end coordinates
j = index(1,1);
which_end = index(1,2)==1;
bond_end = arrow_end(j,:)*which_end + other_end(j,:)*(1-which_end);
% Now decide which bit of the stroke is nearest
stroke_index = adjbond(bond_end,stroke,zeros(size(stroke)));
if stroke_index(1)==1 % uni-causal stroke
causality(j,1:2) = (2*which_end-1)*[1 1];
else % bicausal stroke
% Find out whether stroke is on flow side of bond
stroke_direction = stroke(1,:) - stroke(stroke_index(1),:);
flow_side = stroke_direction*arrow_vector(j,:)'>0;
causality(j,1+flow_side) = 2*which_end-1;
end;
end;
end;
bonds = causality;
% Now expand vector ports
[n_bonds,junk] = size(bonds);
n_exp_ports=n_ports;
exp_port_name="";
exp_port_bond = [];
%exp_comps = [];
for i=1:n_ports
port_name_i = port_name(i,:)
subport = split(port_name_i, ','); % Find the components of the vector port
[n_subports,junk] = size(subport);
if n_subports==1 % an ordinary port
exp_port_name = [exp_port_name; subport(1,:)]; % Write out the only port
exp_port_bond = [exp_port_bond; port_bond(i)]; % and the port_bond
else % its a vector port
% Check that there is a corresponding vector port at the other end of the
% bond
signed_bond_index = port_bond(i);
[other_bond_index,n_other] = getindex(port_bond,-signed_bond_index);
if n_other == 1
other_port_name = port_name(other_bond_index,:);
other_subport = split(other_port_name, ',');
[n_other_subports,junk] = size(other_subport);
if n_other_subports~=n_subports
mtt_info(['Vector ports ', port_name_i, ' and ', other_port_name, 'are not compatible'],infofile);
end
else
mtt_info(['Vector port ', port_name_i, ' has no matching port'], infofile);
end;
if other_bond_index>i %then its not been done yet
mtt_info(['Vector port: ', port_name_i],infofile);
mtt_info(['matching: ', other_port_name],infofile);
% Remove sign info.
bond_index = abs(signed_bond_index);
sig = sign(signed_bond_index);
% Put the first element of each port list in the expanded list
exp_port_name = [exp_port_name; subport(1,:)];
exp_port_name = [exp_port_name; other_subport(1,:)];
% Add to the expanded port_bond list
exp_port_bond = [exp_port_bond; signed_bond_index; ...
-signed_bond_index];
% Add the other names to the expanded list and augment the bonds,
% components and port_bond lists.
for j=2:n_subports
% Add a new name (for each end) to give a non-vector list
exp_port_name = [exp_port_name; subport(j,:)];
exp_port_name = [exp_port_name; other_subport(j,:)];
% Add one more bond to the list
bonds = [bonds; bonds(bond_index,:)];
n_bonds = n_bonds + 1;
% Add bond to the expanded port_bond list (ports at both ends)
exp_port_bond = [exp_port_bond; sig*n_bonds; -sig*n_bonds];
% Add the new bond to the component at both ends (taking note
% of the direction).
arrow_index = comp_near_bond(bond_index,1);
components = add_bond(components, n_bonds, arrow_index);
other_index = comp_near_bond(bond_index,2);
components = add_bond(components, -n_bonds, other_index);
end;
end;
end;
end;
%Replace old list by new
port_name = exp_port_name
port_bond = exp_port_bond
% Resize the lists
[n_ports,junk] = size(port_name);
port_name, components
% Produce a list of bonds on each component (within this component)
% - sorted if explicit port numbers
for i = 1:n_components
disp('-----------------');
%Get component type
eval(['[comp_type, comp_name] = ', name, '_cmp(i)']);
%Convert junction names
if comp_type=='0'
comp_type = 'zero';
end
if comp_type=='1'
comp_type = 'one';
end
%Find the port list for this component
if exist([comp_type, '_cause'])==0
eval(['[junk1,junk2,junk3,junk4,junk5,port_list]=', comp_type, '_rbg;']);
else
port_list=comp_ports(comp_type);
end;
% Find the (unsorted) bond list on this component
signed_bond_list = nozeros(components(i,:));
n_comp_bonds = length(signed_bond_list);
direction = sign(signed_bond_list);
% Check that number of bonds on the component is the same as the number of
% ports
[n_comp_ports,m_comp_ports] = size(port_list);
if (n_comp_ports~=n_comp_bonds) & ...
~(strcmp(comp_type,'zero')|strcmp(comp_type,'one'))
message=sprintf('Component %s (%s) has %1.0f impinging bonds but has %1.0f ports', ...
comp_name,comp_type,n_comp_bonds,n_comp_ports);
mtt_info(message, infofile);
end;
unsorted_port_list="";
if n_ports>0 % then there are some named ports
% so find those associated with the bonds on this component.
k=0;
for j = 1:n_comp_bonds
b = signed_bond_list(j);
% Find the port label on component end of bond (if any)
[port_index,m] = getindex(port_bond,b);
if m==1
k=k+1;
unsorted_port_list(k,:) = port_name(port_index,:);
end;
end;
else
k=0;
end;
%Either all ports or no ports should be labelled - write error
%message if this is not so
if (k~=0)&(k~=n_comp_bonds)
mtt_info(['Component ', comp_name, ' (', comp_type, ') has wrong number of labels'], infofile);
mtt_info(sprintf("\tit has %1.0f labels but should have 0 or %1.0f",k,n_comp_bonds), infofile);
end;
%Compute the number of labeled ports
[n_unsorted_ports,m_unsorted_ports] = size(unsorted_port_list);
if m_unsorted_ports==0
n_unsorted_ports = 0;
end;
n_unsorted_ports,n_comp_bonds
% One port defaults:
if (n_comp_bonds==1)&(n_unsorted_ports==0)
%if (direction(1)<0) & ~strcmp(comp_type,'SS') % Wrong way for default
% mtt_info(['One-port ', comp_name, ' (', comp_type, ') has the sign pointing the wrong way '], infofile);
%end;
unsorted_port_list = port_list;
end;
%Two port defaults
if (n_comp_bonds==2)&(n_unsorted_ports==0)
if direction(1)==direction(2) % Wrong way for default
mtt_info(['Two-port ', comp_name, ' (', comp_type, ') does not have though-pointing arrows'], infofile);
end;
if direction(1)==1 %in
% mtt_info([comp_name, ' in'],infofile);
unsorted_port_list = ['in';'out'];
else %reverse the order
% mtt_info([comp_name, ' out'],infofile);
unsorted_port_list = ['out';'in'];
end;
end;
% Recompute the number of unsorted ports
[n_unsorted_ports,m_unsorted_ports] = size(unsorted_port_list);
if m_unsorted_ports==0
n_unsorted_ports = 0;
end;
% Junctions or no lables(order of ports unimportant)
if strcmp(comp_type,'zero')|strcmp(comp_type,'one')
for j = 1:n_comp_bonds
components(i,j) = signed_bond_list(j);
end
else %Order of ports is important
unsorted_port_list, port_list
if n_unsorted_ports==0
mtt_info(['Component ', comp_name, ' (', comp_type, ') has no labeled ports'], infofile);
end;
%Write out the signed bond list in the correct order
for j = 1:n_comp_bonds
name_k = unsorted_port_list(j,:);
k = name_in_list(name_k, port_list);
% Check that it only appears once in port list
if length(k)>1
mtt_info(['Component ', comp_name, ' (', comp_type, ') has ports with the same name: ', name_k], infofile);
end;
%Check that it only appears one in the label list
kk = name_in_list(name_k,unsorted_port_list);
if length(kk)>1
mtt_info(['Component ', comp_name, ' (', comp_type, ') has multiple port labels: ', name_k], infofile);
end;
if k==0
mtt_info(['Component ', comp_name, ' (', comp_type, ') has an unrecognised port: ', name_k], infofile);
else
components(i,k) = signed_bond_list(j);
end;
end;
end;
end;
fclose(fnum);