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151 lines
3.8 KiB
151 lines
3.8 KiB
package HexGrid::Tile;
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use v5.30;
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use Moo;
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use MooX::Aliases;
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use Carp;
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use HexGrid::Pin;
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use Data::Dumper;
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use feature "signatures";
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no warnings "experimental::signatures";
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has nw => (is => 'ro', required => 1);
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has sw => (is => 'ro', required => 1);
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has style => (is => 'rw', default => sub { {} });
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has colour => (is => 'rw', alias => 'color');
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has opacity => (is => 'rw');
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has images => (is => 'rw', alias => [qw(image background backgrounds)]);
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has show_coords => (is => 'rw');
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has css_class => (is => 'rw');
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has id_suffix => (is => 'rw', default => '_tile');
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my %docks = ( #values are fractions of the height/width
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sw => { order => 1, x => 0, y => 0.5, w => 0.5, h => 0.5 },
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se => { order => 2, x => 0.5, y => 0.5, w => 0.5, h => 0.5 },
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n => { order => 3, x => 0.25, y => 0, w => 0.5, h => 0.5 },
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);
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has pins => (is => 'rw', default => sub { +{ map {$_ => undef} keys %docks } });
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# Class
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sub at($nw,$sw,@rest)
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{
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return HexGrid::Tile->new(nw => $nw, sw => $sw, @rest);
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}
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sub hex_path($w, $h)
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{
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# More readable for me at least as a sequence of points than as two sequences
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my @points = ([0, $h/2], [$w*1/4, 0], [$w*3/4, 0], [$w, $h/2], [$w*3/4, $h], [$w*1/4, $h]);
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# Join pairs with a comma, and sequence with spaces
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return join " ", (map {join ",", @$_} @points);
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}
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# Instance
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sub pin($this, $pin, $dock = undef)
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{
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if(ref $pin eq 'HexGrid::Pin')
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{
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$this->_do_pin($pin, $dock);
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}
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elsif(ref $pin eq 'ARRAY')
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{
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map $this->_do_pin($_), @$pin;
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}
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elsif(ref $pin eq 'HASH')
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{
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foreach my $dock (keys %$pin)
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{
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croak "dock $dock doesn't exist" unless grep { $_ eq $dock } keys %docks;
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$this->{pins}{$dock} = $pin->{$dock};
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}
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return;
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}
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else
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{
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croak "bad pin type";
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}
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}
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sub _do_pin($this, $pin, $dock = undef)
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{
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if($dock)
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{
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croak "bad dock" unless $dock =~ /^sw|se|n$/i;
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$this->{pins}{$dock} = $pin;
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}
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else
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{
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my $success = 0;
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DOCK: foreach my $dock (sort { $docks{$a}->{order} <=> $docks{$b}->{order} } (keys %docks))
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{
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# say STDERR Dumper($dock);
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unless(defined $this->{pins}{$dock})
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{
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$this->{pins}{$dock} = $pin;
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$success = 1;
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last DOCK;
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}
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}
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croak "no free dock" unless $success;
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}
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}
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sub render($this, $container, $width, $height, $laters = undef)
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{
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my $g = $container->g(
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id => HexGrid::to_id("$this->{nw}_$this->{sw}$this->{id_suffix}"),
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);
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# $g->{onclick} = "say('($this->{nw},$this->{sw})')";
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my $hex = $g->polygon(points => hex_path($width, $height),
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id => "$this->{nw}_$this->{sw}_inner_hex", style => $this->style);
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my $clipPath = $g->clipPath(id => "$this->{nw}_$this->{sw}_clip");
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$clipPath->use(href => "#$hex->{id}");
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if($this->{colour})
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{
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$hex->{fill} = $this->{colour};
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}
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if(defined($this->{images}))
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{
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$this->{images} = [$this->{images}] if ref($this->{images}) ne 'ARRAY';
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foreach my $image ($this->{images}->@*)
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{
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my $use_element = $g->use(id => "$this->{nw}_$this->{sw}_${image}_use",
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href => "#${image}_symbol", width => $width, height => $height,
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"clip-path" => "url(#$clipPath->{id})");
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}
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}
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if(defined($this->{opacity})) { $hex->{'fill-opacity'} = $this->{opacity}; }
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if($this->{show_coords})
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{
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my $text = $g->text(x => "@{[0.1 * $width]}", y => "@{[0.6 * $height]}", class => 'coords');
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$text->{'font-size'} = '3em';
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$text->cdata("$this->{nw},$this->{sw}");
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}
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if(defined $this->{css_class}) { $g->{class} = $this->{css_class} }
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if(defined $this->{pins})
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{
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foreach my $key (keys $this->{pins}->%*)
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{
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next unless defined $this->{pins}{$key};
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my $x = $width * $docks{$key}->{x};
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my $w = $width * $docks{$key}->{w};
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my $y = $height * $docks{$key}->{y};
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my $h = $height * $docks{$key}->{h};
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my $pin_element = $this->{pins}{$key}->render($g, $x, $y, $w, $h, $laters);
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$pin_element->{"clip-path"} = "url(#$clipPath->{id})";
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}
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}
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return $g;
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}
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1;
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