#!/usr/bin/perl -w use strict; use Carp; use Data::Dumper; use Math::GSL::Vector qw/:all/; use Math::GSL::Matrix qw/:all/; use Math::GSL::Const; use Math::GSL::BLAS qw/:all/; use Math::GSL::CBLAS qw/:all/; use Math::GSL::Machine qw/:all/; use POSIX qw(M_PI); BEGIN { unshift @INC, qw(.); } use Parse; our $facesf; our %vxname2pos; # $vxname2pos{VXNAME} = Math::GSL::Vector sub TAU { M_PI * 2.0; } sub MM2PT { 72.0 / 25.4; } our $mid; # ----- region names from plag, incl. reverse mapping ----- our %prs2region; sub prep_region_rmap () { foreach my $rn (keys %region) { my $prs = plag_prs($rn); die if $prs2region{$prs}; $prs2region{$prs} = $rn; } # bodgery for the sea and land $prs2region{'NZ | L'} = 'NZ'; $prs2region{'L | NZ'} = 'NZ'; } our $sre = qr{(?:(\")|(?=\w))(.*)\1$}; # 2 captures, $2 is the name sub prs2r ($) { $prs2region{$_[0]} // confess "@_ ?" } sub prs2rr ($) { $region{prs2r($_[0])} } #----- file reader for plag output ----- sub read_faces () { # Sets # $region{NAME}{Adj}[]{Ends}[]{VxName} # $region{NAME}{Adj}[]{Ends}[]{Pos} # $region{NAME}{Polygon}{Pos} # $region{NAME}{Special} # # also incidentally # $region{NAME}{Adj}[]{Ends}[]{Adjoins} # $region{NAME}{Polygon}{Adjoins} # which should be ignored open P, "<", $facesf or die $!; while (
) { last if m/^\&faces$/; } my $rr; my @edges; my $process_rr = sub { my $last_ai; if ($rr->{Name} eq 'NZ') { # We combined L and NZ; now we must split them again # in fact, we just throw away L entirely. # Here, when processing NZ, we keep only vertices that # are part of NZ. @edges = grep { my $evxname = $_->{VxName}; my @eregions = split / \| ?/, $evxname; grep { $_ eq 'NZ' } @eregions } @edges; } $rr->{Polygon} = [ @edges ]; if ($rr->{Name} ne 'NZ') { for my $ei (0..$#edges) { my $ej = $ei % @edges; if (!defined $last_ai) { my $ai; for my $ai (0..$#{ $rr->{Adj} }) { next unless $rr->{Adj}[$ai]{Name} eq $edges[$ei]{Adjoins}; $last_ai = $ai+1; } confess $edges[$ei]{Adjoins}.' ?' unless defined $last_ai; } my $ai = ($last_ai-1+@edges) % @edges; $last_ai = $ai; my $adj = $rr->{Adj}[$ai]; confess Dumper($rr, \@edges, $ei, $ej, $adj, $last_ai, $ai)." ?" unless $adj->{Name} eq $edges[$ei]{Adjoins}; for my $endi (0..1) { $adj->{Ends}[$endi] = $edges[ ($ei + $endi) % @edges ]; } } } @edges = (); $rr = undef; }; my $vxname; for (;;) { $!=0; $_=
// confess $!;
last if m/^\&$/;
if (m/^$sre$/) {
my $new_face= $2;
$process_rr->() if $rr;
$rr= prs2rr($new_face);
} elsif (m/^\s+$sre$/) {
confess unless $rr;
$vxname = $2;
push @edges, { VxName => $vxname };
} elsif (m/^\s+\^adjoins\s+$sre$/) {
$edges[-1]{Adjoins} = prs2r($2);
} elsif (m/^\s+\^\@([-e.0-9]+)\,([-e.0-9]+)$/) {
my $pos = Math::GSL::Vector->new([$1,$2]);
confess unless defined $vxname;
$edges[-1]{Pos} = $pos;
$vxname2pos{$vxname} = $pos;
}
}
$process_rr->();
$region{$_}{Special} = 1 foreach qw(NZ L);
}
#----- geometry mangling -----
sub calculate_centres () {
# Sets
# $region{NAME}{Centre}
foreach my $rr (values %region) {
next if $rr->{Special};
my $poly = $rr->{Polygon};
my $sum = Math::GSL::Vector->new(2);
$sum += $_->{Pos} foreach @$poly;
$rr->{Centre} = $sum * (1.0 / @$poly);
}
}
sub for_each_pos ($) {
my ($f) = @_;
my $call = sub {
my ($pr,$rr,$why) = @_;
return unless defined $$pr;
$f->($pr,$rr,$why);
};
foreach my $rr (values %region) {
$call->( \ $rr->{Centre}, $rr, $rr->{Name}." C" );
foreach my $vertex (@{ $rr->{Polygon} }) {
$call->( \ $vertex->{Pos}, $rr, $rr->{Name}." | ".$vertex->{Adjoins} );
}
}
}
sub prvec ($) {
my ($v) = @_;
confess unless $v;
sprintf "%g,%g", $v->get(0), $v->get(1);
}
sub transform_coordinates () {
# Adjusts coordinates in graph to be [0,0] .. top right (scaled)
# until it's all in PostScript points
my @or = map { $region{$_}{Centre} } @{ $c{OrientRegions} };
my $dir = $or[1] - $or[0];
my $theta = atan2 $dir->get(1), $dir->get(0);
my $rotateby = (90. - $c{OrientBearing}) * ((TAU)/360.) - $theta;
my $s = sin($rotateby);
my $c = cos($rotateby);
my $transform = Math::GSL::Matrix->new(2,2);
$transform->set_row(0, [ $c, -$s ]);
$transform->set_row(1, [ $s, $c ]);
print STDERR "rotate was=",prvec($dir)," theta=$theta",
" rotateby=$rotateby s=$s c=$c\n";
my @lims;
foreach my $topend (qw(0 1)) {
my $v = $topend ? -$GSL_DBL_MAX : $GSL_DBL_MAX;
$lims[$topend] = Math::GSL::Vector->new([$v,$v]);
}
for_each_pos(sub {
my ($pr, $rr, $why) = @_;
my $y = Math::GSL::Vector->new(2);
gsl_blas_dgemv($CblasNoTrans,
1.0, $transform->raw,
$$pr->raw,
0, $y->raw)
and confess;
#print STDERR "gsl_blas_dgemv ",prvec($$pr)," => ",prvec($y),"\n";
gsl_blas_dcopy($y->raw, $$pr->raw)
and confess;
foreach my $topend (qw(0 1)) {
foreach my $xy (qw(0 1)) {
my $now = $y->get($xy);
my $lim = $lims[$topend]->get($xy);
#print STDERR "?set $topend $xy $now $lim\n";
next if $topend ? ($now <= $lim) : ($now >= $lim);
$lims[$topend]->set([$xy], [$now]);
#print STDERR "set $topend $xy $now\n";
}
}
});
print STDERR "lims ",prvec($lims[0])," .. ",prvec($lims[1]),"\n";
my $translate = -$lims[0];
print STDERR "translate ",prvec($translate),"\n";
my $scale = $c{GraphScale} * MM2PT;
for_each_pos(sub {
my ($pr) = @_;
gsl_vector_add($$pr->raw, $translate->raw) and confess;
gsl_vector_scale($$pr->raw, $scale) and confess;
});
$mid = ($lims[1] - $lims[0]) * 0.5;
}
sub adjust_nz() {
my $poly = $region{NZ}{Polygon};
my %occurs;
foreach my $v (@$poly) {
$occurs{$v->{VxName}}++
}
foreach my $v (@$poly) {
$v->{NZ_Occurs} = $occurs{$v->{VxName}};
}
print STDERR " nz ".(scalar @$poly)."\n";
my $occurs_m = sub {
my ($ei) = @_;
$poly->[($ei+@$poly) % @$poly]{NZ_Occurs} > 1
};
for my $ei (0..$#$poly) {
next if $occurs_m->($ei);
next unless $occurs_m->($ei-1);
next unless $occurs_m->($ei+1);
print STDERR " nz would adjust $poly->[$ei]{VxName}\n";
# adjust coord outwards
}
for my $ei (0..$#$poly) {
next unless $occurs_m->($ei);
print STDERR " nz occurs_m $ei $poly->[$ei]{VxName}\n";
next unless $occurs_m->($ei-1);
my $dleft = Math::GSL::Vector->new([-1000,0]);
foreach my $which (0,-1) {
my $ej = ($ei + $which + @$poly) % @$poly;
my $ek = ($ei + +1 + 3*$which + @$poly) % @$poly;
my $posj = \ $poly->[$ej]{Pos};
my $posk = \ $poly->[$ek]{Pos};
my $dout = $$posk - $$posj;
print STDERR " nz adj j=$ej ",prvec($$posj)," $poly->[$ej]{VxName}\n";
print STDERR " nz adj k=$ek ",prvec($$posk)," $poly->[$ek]{VxName}\n";
$$posj = $$posj + $dleft + $dout*10;
$$posk = $$posk + $dout*10;
}
}
}
sub psvec ($) {
my ($pos) = @_;
sprintf "%20.6f %20.6f", $pos->get(0),$pos->get(1)
}
sub face_path ($) {
my ($rr) = @_;
o("% $rr->{Name}\n");
o(" newpath\n");
my $xto = 'moveto';
foreach my $vertex (@{ $rr->{Polygon} }) {
my $pos = $vertex->{Pos};
o(sprintf " %s %s\n", psvec($pos), $xto);
$xto = 'lineto';
}
o(" closepath\n");
}
sub pscolour ($) {
my ($spec) = @_;
confess unless defined $spec;
join ' ',
(map { sprintf "%.6f ", hex($_) / 15.0 }
split //, $spec),
'setrgbcolor';
}
sub preamble() {
o("%!\n");
o(" 0.52 dup scale\n"); # xxx bodge, want boundingbox or something
}
sub fill_faces() {
o("clippath ", pscolour($c{Colours}{land}), " fill\n");
foreach my $rr (values %region) {
next if $rr->{Name} eq 'L';
face_path($rr);
o(" ", pscolour($c{Colours}{$rr->{Colour}}), " eofill\n");
}
}
sub edge_faces() {
o("5 setlinewidth 1 setlinejoin 0 setgray\n");
foreach my $rr (values %region) {
next if $rr->{Name} eq 'L';
face_path($rr);
o(" stroke\n");
}
}
sub label_faces() {
my $sz = 18;
o(" 1 setgray /Helvetica-Bold findfont $sz scalefont setfont\n");
foreach my $rr (values %region) {
next if $rr->{Special};
my $words = $rr->{DisplayName};
my $pos = $rr->{Centre} + Math::GSL::Vector->new([ 0, 0.5 * $sz * @$words ]);
foreach my $word (@$words) {
$pos += Math::GSL::Vector->new([0,-$sz]);
o(" ", psvec($pos), " moveto");
o(<