function [bonds,components] = rbg2abg(name,rbonds,rstrokes,rcomponents,port_coord,port_name,\
infofile,errorfile)
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% Version control history
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% $Id$
% %% $Log$
% %% Revision 1.34 1998/07/02 19:41:29 peterg
% %% Fixed empty port string bug - set to null string.
% %%
% %% Revision 1.33 1998/07/02 17:16:06 peterg
% %% Commented out redundent code -- obsolete due to new default mechanism
% %%
% %% Revision 1.32 1998/07/02 15:12:05 peterg
% %% Added hard error reporting
% %% Added error when two unlabled bonds point in.
% %%
% %% Revision 1.31 1998/07/02 14:30:50 peterg
% %% Corrected various bugs - including resettting n_ports to correct value
% %%
% %% Revision 1.30 1998/07/02 13:40:50 peterg
% %% Added extra ports names (due to defaults) to relevant lists:
% %% port_name
% %% port_bond
% %%
% %% Revision 1.29 1998/07/02 13:28:31 peterg
% %% Added defaults in new form BEFORE alias expansion
% %%
% %% Revision 1.28 1998/07/02 12:36:05 peterg
% %% Removed debugging lines
% %%
% %% Revision 1.27 1998/07/02 12:24:02 peterg
% %% Expand port aliases
% %%
% %% Revision 1.26 1998/04/16 14:07:51 peterg
% %% Sorted out [] problem with vector ports -- new octave function
% %% split_port
% %%
% %% Revision 1.25 1998/04/12 15:01:04 peterg
% %% Converted to uniform port notation - always use []
% %%
% %% Revision 1.24 1998/02/19 08:57:16 peterg
% %% Fixed mtt-info bug -- confused filename with number
% %%
% %% Revision 1.23 1997/12/04 14:24:22 peterg
% %% Removed error message about through-pointing arrows
% %%
% %% Revision 1.22 1997/09/18 19:49:37 peterg
% %% Added test for uniquness of bonds on a component -- if non-unique
% %% implies same component at both ends of a bond.
% %%
% %% Revision 1.21 1997/09/16 15:14:14 peterg
% %% Added warning if a component has no bonds.
% %%
% %% Revision 1.20 1997/08/18 19:39:48 peterg
% %% Now generates (exampaded) port_bond list correctely
% %%
% %% 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
% %%
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%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)
% If port_name is empty, make it a empty string
if (length(port_name)==0)
port_name="";
end
% 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;
port_bond
%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;
comp_near_bond
% 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.
% Also expand aliases using the alias list for each component
components = [];
for i = 1:n_components
%Get component type
eval(['[comp_type, comp_name] = ', name, '_cmp(i)']);
% There are n_comp_bonds bonds on this component with corresponding index
[index,n_comp_bonds] = getindex(comp_near_bond,i);
if index(1,1)==0
mtt_error(sprintf("Component %s (%s) has no bonds", comp_name,
comp_type),errorfile);
end;
% Create the signed list of bonds on this component
one = ones(n_comp_bonds,1);
bond_list = index(:,1); % bond at component
% Check that all bonds are unique -- error if not
if unique(bond_list)==0
mtt_error(sprintf("Component %s (%s) is at both ends of a bond", comp_name,
comp_type),errorfile);
end;
% which end of bond at component?
bond_end = index(:,2);
direction = -sign(bond_end-1.5*one);
signed_bond_list = bond_list.*direction;
components = add_bond(components,signed_bond_list',i);
# Unalias all the ports on this component - if not a junction
unlabelled_ports = 0;
in_bonds = 0;
out_bonds = 0;
if ((comp_type!="0")&&(comp_type!="1")) # Don't do junctions
for j=1:n_comp_bonds
signed_bond = signed_bond_list(j);
port_name_index = getindex(port_bond,signed_bond);
port_direction = sign(signed_bond);
if port_name_index==0 # There is no port on this bond - so try
# to default
unlabelled_ports++;
if(unlabelled_ports==1)
if port_direction>0
in_bonds++;
port_name_i = "in";
else
out_bonds++;
port_name_i = "out";
end;
elseif (unlabelled_ports==2)
if port_direction>0
if (++in_bonds>1)
mtt_error(["More than one unlabelled INport on component " \
comp_name " (" comp_type ")"],errorfile);
else
port_name_i = "in";
end
else
if (++out_bonds>1)
mtt_error(["More than one unlabelled OUTport on component " \
comp_name " (" comp_type ")"],errorfile);
else
port_name_i = "out";
end
end;
else
mtt_error(["More than two unlabelled ports on component " \
comp_name " (" comp_type ")"],errorfile);
end
mtt_info(["Defaulting port name [" port_name_i "]\t on component " \
comp_name " (" comp_type ")" ],infofile);
port_name = [port_name; ["[" port_name_i "]"]]; # add to list
[port_name_index,junk] = size(port_name); # the corresponding
# index
port_bond(port_name_index,:) = signed_bond; # add to port bond
else
port_name_i = deblank(port_name(port_name_index,:));
port_name_i = port_name_i(2:length(port_name_i)-1) # strip []
end;
% Replace by alias -- if any
eval( ["alias = ", comp_type, '_alias';]); # Get aliases
if is_struct(alias) # are there any aliases
if struct_contains(alias,port_name_i) # Is this an alias?
eval(["new_port_name_i = alias.",port_name_i]);
mtt_info(["Expanding port name [" port_name_i "]\t on component " \
comp_name " (" comp_type ")\t to [" new_port_name_i "]"],infofile);
port_name = replace_name(port_name, \
["[",new_port_name_i,"]"], \
port_name_index);
end
end
end
end
end;
% At this point, every port should be labeled (port_name) and \
% associated with a bond (port_bond).
disp("--- Completed portnames and the corresponding bonds ---")
port_name, port_bond
% 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_ports=length(port_bond);
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,n_subports] = split_port(port_name_i, ','); % Find the components of the vector port
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,n_other_subports] = split_port(other_port_name, ',');
if n_other_subports~=n_subports
mtt_error(['Vector ports ', port_name_i, ' and ', other_port_name, 'are not compatible'],errorfile);
end
else
mtt_error(['Vector port ', port_name_i, ' has no matching port'], errorfile);
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 (unsorted) bond list on this component
signed_bond_list = nozeros(components(i,:));
n_comp_bonds = length(signed_bond_list);
direction = sign(signed_bond_list);
%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,n_comp_bonds);
end;
% 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_error(message, errorfile);
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);
# portnames="";
# for kk=1:k
# portnames=sprintf("%s %s",portnames, unsorted_port_list(kk,:));
# end;
# mtt_error(portnames,errorfile);
# 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_error(['One-port ', comp_name, ' (', comp_type, ') has the sign pointing the wrong way '], errorfile);
# %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_error(['Two-port ', comp_name, ' (', comp_type, ') does not have through-pointing arrows'], errorfile);
# 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_error(['Component ', comp_name, ' (', comp_type, ') has no labeled ports'], errorfile);
end;
%Write out the signed bond list in the correct order
unsorted_port_list
for j = 1:n_comp_bonds
j
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_error(['Component ', comp_name, ' (', comp_type, ') has ports with the same name: ', name_k], errorfile);
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_error(['Component ', comp_name, ' (', comp_type, ') has multiple port labels: ', name_k], errorfile);
end;
if k==0
mtt_error(['Component ', comp_name, ' (', comp_type, ') has an unrecognised port: ', name_k], errorfile);
else
components(i,k) = signed_bond_list(j);
end;
end;
end;
end;