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Re^4: Animated Heatmap

by marioroy (Vicar)
on Aug 24, 2019 at 22:14 UTC ( #11104963=note: print w/replies, xml ) Need Help??


in reply to Re^3: Animated Heatmap
in thread Animated Heatmap

MCE::Map constructs the MCE object internally. Well, here is the same thing using MCE.

#!/usr/bin/env perl # https://www.perlmonks.org/?node_id=11104804 # Animated Heatmap # v1. https://www.perlmonks.org/index.pl?node_id=11104262 # v2. https://www.perlmonks.org/index.pl?node_id=11104285 # v3. This; feel free to hack it up and post your version! use strict; use warnings; use Imager; use Imager::Filter::Flines; use Imager::Heatmap; use MCE; # Configuration my $size = { x => 600, y => 60 }; my $japh = 'Just another Perl hacker'; my $filename = 'heatmap_anon_bliako.gif'; # Figure out font my $fontface = $^O eq 'MSWin' ? 'Arial' : $^O eq 'darwin' ? '/System/Library/Fonts/Keyboard.ttf' : '/usr/share/fonts/open-sans/OpenSans-Semibold.ttf'; my $font = $^O eq 'MSWin' ? Imager::Font->new( face => $fontface, size => $size->{x}/12, aa => 1) : Imager::Font->new( file => $fontface, size => $size->{x}/12, aa => 1); STDOUT->autoflush(1); print "Generating GIF frame "; # Create the image my $text = Imager->new(xsize=>$size->{x}, ysize=>$size->{y}); # Generate the text $text->box(color => Imager::Color->new(255, 255, 255), filled => 1); $text->string( font => $font, text => $japh, color => Imager::Color->new('#000000'), x => 1, y => ($size->{x}/12)-1, ); my @insert = (); # Scan image of text for heatmap data for my $x (0..$size->{x}-1) { for my $y (0..$size->{y}-1) { my $pix = ($text->getpixel(x=>$x, y=>$y, type=>'8bit')->rgba())[0] +; push @insert, [ $x, $y, $pix ] } } # Generate, draw and filter the heatmap my @data; MCE->new( max_workers => 10, input_data => [ 1 .. 10 ], chunk_size => 1, init_relay => '', gather => sub { my ($chunk_id) = @_; $data[ $chunk_id - 1 ] = $_[1]; }, user_func => sub { my $x = $_; my $hmap = Imager::Heatmap->new( xsize => $size->{x}, ysize => $size->{y}, xsigma => $x, ysigma => $x, ); $hmap->insert_datas(@insert); $hmap = $hmap->draw; $hmap->filter(type => 'flines'); my $data; $hmap->write(data => \$data, type => 'png'); # calling relay so orderly print output MCE::relay { print "$x "; MCE->gather(MCE->chunk_id, $data); }; } )->run; print "done!\n"; # Write animated gif Imager->write_multi({ file => $filename, transp => 'none', gif_loop => 0, }, map { Imager->read_multi(data => \$_) } @data); # Isn't perl wonderful? print "Saved $filename\n";

Regards, Mario

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