6 use Math::GSL::Vector qw/:all/;
7 use Math::GSL::Matrix qw/:all/;
9 use Math::GSL::BLAS qw/:all/;
10 use Math::GSL::CBLAS qw/:all/;
11 use Math::GSL::Machine qw/:all/;
15 BEGIN { unshift @INC, qw(.); }
18 require 'misc-data.pl';
23 our %vxname2pos; # $vxname2pos{VXNAME} = Math::GSL::Vector
25 sub TAU { M_PI * 2.0; }
26 sub MM2PT { 72.0 / 25.4; }
28 # ----- region names from plag, incl. reverse mapping -----
32 sub prep_region_rmap () {
33 foreach my $rn (keys %region) {
34 my $prs = plag_prs($rn);
35 die if $prs2region{$prs};
36 $prs2region{$prs} = $rn;
39 # bodgery for the sea and land
40 $prs2region{'NZ | L'} = 'NZ';
41 $prs2region{'L | NZ'} = 'NZ';
44 our $sre = qr{(?:(\")|(?=\w))(.*)\1$}; # 2 captures, $2 is the name
46 sub prs2r ($) { $prs2region{$_[0]} // confess "@_ ?" }
47 sub prs2rr ($) { $region{prs2r($_[0])} }
49 #----- file reader for plag output -----
53 # $region{NAME}{Adj}[]{Ends}[]{VxName}
54 # $region{NAME}{Adj}[]{Ends}[]{Pos}
55 # $region{NAME}{Polygon}{Pos}
56 # $region{NAME}{Special}
59 # $region{NAME}{Adj}[]{Ends}[]{Adjoins}
60 # $region{NAME}{Polygon}{Adjoins}
61 # which should be ignored
63 open P, "<", $facesf or die $!;
64 while (<P>) { last if m/^\&faces$/; }
67 my $process_rr = sub {
69 if ($rr->{Name} eq 'NZ') {
70 # We combined L and NZ; now we must split them again
71 # in fact, we just throw away L entirely.
72 # Here, when processing NZ, we keep only vertices that
75 my $evxname = $_->{VxName};
76 my @eregions = split / \| ?/, $evxname;
77 grep { $_ eq 'NZ' } @eregions
80 $rr->{Polygon} = [ @edges ];
81 if ($rr->{Name} ne 'NZ') {
82 for my $ei (0..$#edges) {
83 my $ej = $ei % @edges;
84 if (!defined $last_ai) {
86 for my $ai (0..$#{ $rr->{Adj} }) {
87 next unless $rr->{Adj}[$ai]{Name} eq $edges[$ei]{Adjoins};
90 confess $edges[$ei]{Adjoins}.' ?' unless defined $last_ai;
92 my $ai = ($last_ai-1+@edges) % @edges;
94 my $adj = $rr->{Adj}[$ai];
95 confess Dumper($rr, \@edges, $ei, $ej, $adj, $last_ai, $ai)." ?"
96 unless $adj->{Name} eq $edges[$ei]{Adjoins};
99 $adj->{Ends}[$endi] = $edges[ ($ei + $endi) % @edges ];
108 $!=0; $_=<P> // confess $!;
112 $process_rr->() if $rr;
113 $rr= prs2rr($new_face);
114 } elsif (m/^\s+$sre$/) {
117 push @edges, { VxName => $vxname };
118 } elsif (m/^\s+\^adjoins\s+$sre$/) {
119 $edges[-1]{Adjoins} = prs2r($2);
120 } elsif (m/^\s+\^\@([-e.0-9]+)\,([-e.0-9]+)$/) {
121 my $pos = Math::GSL::Vector->new([$1,$2]);
122 confess unless defined $vxname;
123 $edges[-1]{Pos} = $pos;
124 $vxname2pos{$vxname} = $pos;
129 $region{$_}{Special} = 1 foreach qw(NZ L);
132 #----- geometry mangling -----
134 sub calculate_centres () {
136 # $region{NAME}{Centre}
137 foreach my $rr (values %region) {
138 next if $rr->{Special};
139 my $poly = $rr->{Polygon};
140 my $sum = Math::GSL::Vector->new(2);
141 $sum += $_->{Pos} foreach @$poly;
142 $rr->{Centre} = $sum * (1.0 / @$poly);
146 sub for_each_pos ($) {
149 my ($pr,$rr,$why) = @_;
150 return unless defined $$pr;
153 foreach my $rr (values %region) {
154 $call->( \ $rr->{Centre}, $rr, $rr->{Name}." C" );
155 foreach my $vertex (@{ $rr->{Polygon} }) {
156 $call->( \ $vertex->{Pos}, $rr, $rr->{Name}." | ".$vertex->{Adjoins} );
163 sprintf "%g,%g", $v->get(0), $v->get(1);
166 sub transform_coordinates () {
167 # Adjusts coordinates in graph to be [0,0] .. top right (scaled)
168 # until it's all in PostScript points
169 my @or = map { $region{$_}{Centre} } @{ $c{OrientRegions} };
170 my $dir = $or[1] - $or[0];
171 my $theta = atan2 $dir->get(1), $dir->get(0);
172 my $rotateby = (90. - $c{OrientBearing}) * ((TAU)/360.) - $theta;
173 my $s = sin($rotateby);
174 my $c = cos($rotateby);
175 my $transform = Math::GSL::Matrix->new(2,2);
176 $transform->set_row(0, [ $c, -$s ]);
177 $transform->set_row(1, [ $s, $c ]);
178 print STDERR "rotate was=",prvec($dir)," theta=$theta",
179 " rotateby=$rotateby s=$s c=$c\n";
181 foreach my $topend (qw(0 1)) {
182 my $v = $topend ? -$GSL_DBL_MAX : $GSL_DBL_MAX;
183 $lims[$topend] = Math::GSL::Vector->new([$v,$v]);
186 my ($pr, $rr, $why) = @_;
187 my $y = Math::GSL::Vector->new(2);
188 gsl_blas_dgemv($CblasNoTrans,
189 1.0, $transform->raw,
193 #print STDERR "gsl_blas_dgemv ",prvec($$pr)," => ",prvec($y),"\n";
194 gsl_blas_dcopy($y->raw, $$pr->raw)
196 foreach my $topend (qw(0 1)) {
197 foreach my $xy (qw(0 1)) {
198 my $now = $y->get($xy);
199 my $lim = $lims[$topend]->get($xy);
200 #print STDERR "?set $topend $xy $now $lim\n";
201 next if $topend ? ($now <= $lim) : ($now >= $lim);
202 $lims[$topend]->set([$xy], [$now]);
203 #print STDERR "set $topend $xy $now\n";
207 print STDERR "lims ",prvec($lims[0])," .. ",prvec($lims[1]),"\n";
208 my $translate = -$lims[0];
209 print STDERR "translate ",prvec($translate),"\n";
210 my $scale = $c{GraphScale} * MM2PT;
213 gsl_vector_add($$pr->raw, $translate->raw) and confess;
214 gsl_vector_scale($$pr->raw, $scale) and confess;
218 sub write_face_edges() {
219 o("5 setlinewidth 1 setlinejoin\n");
220 foreach my $rr (values %region) {
221 next if $rr->{Special};
222 o("% $rr->{Name} ",prvec($rr->{Centre}),"\n");
225 foreach my $vertex (@{ $rr->{Polygon} }) {
226 my $pos = $vertex->{Pos};
228 o(sprintf " %20.6f %20.6f %s\n", $pos->get(0),$pos->get(1), $xto);
232 my $chex = $c{Colours}{$rr->{Colour}};
235 o(sprintf " %.6f ", hex($_) / 15.0) foreach split //, $chex;
236 o(" setrgbcolor eofill grestore\n");
242 #----- main program -----
244 ($facesf, @ARGV) = @ARGV or die;
249 transform_coordinates();
255 #print STDERR Dumper(\%region);
258 # cperl-indent-level: 2