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# Copyright (c) 1997-2024
# Ewgenij Gawrilow, Michael Joswig, and the polymake team
# Technische Universität Berlin, Germany
# https://polymake.org
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2, or (at your option) any
# later version: http://www.gnu.org/licenses/gpl.txt.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#-------------------------------------------------------------------------------
use Visual::Drawing;
package Geomview::File;
use Polymake::Struct (
'@geom',
);
my $setup=<<'.';
(bbox-draw "world" no)
.
sub toString {
my ($self)=@_;
$setup . join("", map { $_->toString } @{$self->geom});
}
package Geomview::geom;
use Polymake::Struct (
[ '@ISA' => 'Visual::Drawing' ],
);
sub header {
my ($self)=@_;
my $id=$self->title;
if (length($id)) {
$id =~ s/\s/_/g;
} else {
$id="unnamed";
}
"(geometry $id { LIST\n";
}
sub trailer {
"} # end LIST\n)\n";
}
package Geomview::element;
sub new {
my $class=shift;
my $self=bless { @_ }, $class;
$self;
}
sub name : lvalue { (shift)->{name} }
sub toString {
my ($self)=@_;
"{" .
( defined($self->{appearance}) && " appearance { $self->{appearance} }\n" ) .
$self->contents .
"}\n";
}
sub points {
my ($self)=@_;
join("\n", map { Visual::print3dcoords($_) } @{$self->{points}})."\n";
}
sub colored_points {
my ($self)=@_;
my ($p, $c)=@$self{qw( points pointColors )};
my $i=-1;
is_code($c)
? join("", map { Visual::print3dcoords($_) . " " . $c->(++$i)->toFloat . " 0\n" } @$p)
: do { $c=$c->toFloat; join("", map { Visual::print3dcoords($_) . " $c 0\n" } @$p) }
}
sub facets {
my ($self)=@_;
join("", map { scalar(@$_) . " @$_\n" } @{$self->facets})
}
sub colored_facets {
my ($self)=@_;
my ($f, $c, $a)=@$self{qw( facets facetColors facetAlpha )};
my $i=-1;
$c=$c->toFloat unless is_code($c);
join("", map { ++$i; scalar(@$_) . " @$_ " .
(ref($c) ? $c->($i)->toFloat : $c) .
(defined($a) && " " . $a->($i)) . "\n"
} @$f)
}
sub lines {
my ($self)=@_;
my $text="";
for (my $l=$self->{lines}; $l; ++$l) {
$text.="2 @$l\n";
}
$text
}
sub colored_lines {
my ($self)=@_;
my $c=$self->{lineColors};
$c=$c->toFloat unless is_code($c);
my $text="";
for (my $l=$self->{lines}; $l; ++$l) {
$text.="2 @$l " . (ref($c) ? $c->($l)->toFloat : $c) . "\n";
}
}
package Geomview::OFF;
@ISA=qw( Geomview::element );
sub dim {
my ($self)=@_;
"OFF\n" . scalar(@{$self->{points}}) . " " . scalar(@{$self->{facets}}) . " 0\n"
}
sub contents {
my ($self)=@_;
( defined $self->{pointColors}
? "C" . $self->dim . $self->colored_points
: $self->dim . $self->points ) .
( defined $self->{facetColors} ? $self->colored_facets : $self->facets )
}
package Geomview::SKEL;
@ISA=qw( Geomview::element );
sub dim {
my ($self)=@_;
"SKEL\n" . scalar(@{$self->{points}}) . " " . $self->{n_lines} . "\n"
}
sub contents {
my ($self)=@_;
$self->dim . $self->points .
( defined $self->{lineColors} ? $self->colored_lines : $self->lines )
}
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# End:
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