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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.
#-------------------------------------------------------------------------------
package PmSvg::Lattice;
use Polymake::Struct (
[ '@ISA' => 'Wire' ],
[ '$locked' => '0' ],
'@label_widths'
);
sub new {
my $self=&_new;
my $Graph=$self->source;
my $node_thickness=$self->source->NodeThickness;
my $border_thickness=$self->source->NodeBorderThickness;
@{$self->label_widths}=map {
my $th=is_code($node_thickness) ? $node_thickness->($_) : $node_thickness;
$th //= 1;
my $bw=is_code($border_thickness) ? $border_thickness->($_) : $border_thickness;
$bw //= 1;
assign_max($self->marginTop, ($fontsize+$text_spacing)*$th/2+$line_width*$bw);
(($avg_char_width * $fontsize * $glyph_width * line_break_label_length($Graph->NodeLabels->($_)) + $text_spacing)*$th + 2*$line_width*$bw)*(1+$face_spacing);
} 0..$Graph->n_nodes-1;
my $embedding=$Graph->Coord;
if (is_object($embedding)) {
# expecting Visual::GraphEmbedding here
$embedding->label_width=\@{$self->label_widths};
$embedding->options->{dual}= $Graph->Mode eq "dual";
}
$self->init;
@{$self->coords}=@$embedding;
my $style=$Graph->NodeStyle;
foreach my $n (0..scalar(@{$self->label_widths})-1) {
if (!is_code($style) || $style->($n) !~ $Visual::hidden_re) {
my ($x, $y)=@{$self->coords->[$n]};
assign_min($self->minX, $x-@{$self->label_widths}[$n]/2);
assign_max($self->maxX, $x+@{$self->label_widths}[$n]/2);
assign_min_max($self->minY, $self->maxY, $y);
}
}
$self->marginBottom=$self->marginTop;
$self->marginLeft=$self->marginRight= 0.5*$text_spacing + $line_width;
$self;
}
sub draw_points {
my ($self, $svggroups, $scaleX)=@_;
my $Graph=$self->source;
my $node_color=$Graph->NodeColor // new RGB("255 255 255");
my $border_color=$Graph->NodeBorderColor // new RGB("0 0 0");
my $static_node_color;
my $static_border_color;
if (defined($node_color) && !is_code($node_color)) {
$static_node_color=$node_color;
}
if (defined($border_color) && !is_code($border_color)) {
$static_border_color=$border_color;
}
my $border_thickness=$self->source->NodeBorderThickness;
my $p = 0;
foreach my $coord (@{$self->coords}){
my $r = $self->radius->[$p] or next;
my $fill_color = $static_node_color // $node_color->($p) // new RGB("255 255 255");
my $border_color = $static_border_color // $border_color->($p) // new RGB("0 0 0");
my $label_width = @{$self->label_widths}[$p];
my $bw=is_code($border_thickness) ? $border_thickness->($p) : $border_thickness;
$bw //= 1;
$bw = $scaleX<1 ? $scaleX*$bw : $bw;
$label_width = $scaleX<1 ? $scaleX*$label_width : $label_width;
$label_width /= (1+$face_spacing);
my $fsize = $scaleX<1 ? $scaleX*$fontsize : $fontsize;
my $ts = $scaleX<1 ? $scaleX*$text_spacing : $text_spacing;
@{$svggroups}[$p]->rectangle(
x=>$coord->[0] - 0.5*$label_width,
y=>$coord->[1] - 0.5*$fsize - $ts,
width=>$label_width,
height=>0.75*$fsize + 2*$ts,
rx=>$roundness_x, ry=>$roundness_y,
style => {
'fill' => "rgb(" . parse_color($fill_color) . ")",
'stroke' => "rgb(" . parse_color($border_color) . ")",
'stroke-width' => $bw,
}
);
if (defined($Graph->NodeLabels)) {
my $vlabel = $Graph->NodeLabels->($p);
@{$svggroups}[$p]->text(
x => $coord->[0],
y => $coord->[1] + 0.25*$fsize,
'text-anchor' => "middle",
'font-family' => $fontname,
'font-size' => $fsize,
)->cdata($vlabel);
}
}
continue {
++$p;
}
}
sub parse_color() {
my $color=shift;
$color = $color->toInt;
$color =~ tr/" "/","/;
return "$color";
}
sub line_break_label_length() {
my $face_label = shift;
my @node_numbers = split(/\s/,$face_label);
my $length = @node_numbers ? @node_numbers-1 : 2;
foreach (@node_numbers) {
my $l = length($_);
$length += $l+($l-1)*$glyph_seperator;
}
return $length;
}
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