diff options
Diffstat (limited to 'web/nms.gathering.org/old/mygraph.pl')
| -rwxr-xr-x | web/nms.gathering.org/old/mygraph.pl | 179 |
1 files changed, 0 insertions, 179 deletions
diff --git a/web/nms.gathering.org/old/mygraph.pl b/web/nms.gathering.org/old/mygraph.pl deleted file mode 100755 index 64104aa..0000000 --- a/web/nms.gathering.org/old/mygraph.pl +++ /dev/null @@ -1,179 +0,0 @@ -#! /usr/bin/perl -T -use strict; -use warnings; -use GD; -use POSIX; -use Time::Zone; - -sub blendpx { - my ($gd, $x, $y, $r, $g, $b, $frac) = @_; - my ($ro, $go, $bo) = $gd->rgb($gd->getPixel($x, $y)); - - # workaround for icky 256-color graphs - # $frac = int($frac * 32) / 32; - - my $rn = $ro * (1.0 - $frac) + $r * $frac; - my $gn = $go * (1.0 - $frac) + $g * $frac; - my $bn = $bo * (1.0 - $frac) + $b * $frac; - - $gd->setPixel($x, $y, $gd->colorResolve($rn, $gn, $bn)); -} - -# Standard implementation of Wu's antialiased line algorithm. -sub wuline { - my ($gd, $x1, $y1, $x2, $y2, $r, $g, $b, $a) = @_; - $x1 = POSIX::floor($x1); - $x2 = POSIX::floor($x2); - $y1 = POSIX::floor($y1); - $y2 = POSIX::floor($y2); - - if (abs($x2 - $x1) > abs($y2 - $y1)) { - # x-directional - if ($y2 < $y1) { - ($x2, $y2, $x1, $y1) = ($x1, $y1, $x2, $y2); - } - - my $y = POSIX::floor($y1); - my $frac = $y1 - $y; - my $dx = ($x2 > $x1) ? 1 : -1; - my $dy = ($y2 - $y1) / abs($x2 - $x1); - - for (my $x = $x1; $x != $x2 + $dx; $x += $dx) { - blendpx($gd, $x, $y, $r, $g, $b, $a * (1.0 - $frac)); - blendpx($gd, $x, $y + 1, $r, $g, $b, $a * $frac); - $frac += $dy; - if ($frac > 1) { - $frac -= 1; - ++$y; - } - } - } else { - # y-directional - if ($x2 < $x1) { - ($x2, $y2, $x1, $y1) = ($x1, $y1, $x2, $y2); - } - my $x = POSIX::floor($x1); - my $frac = $x1 - $x; - my $dy = ($y2 > $y1) ? 1 : -1; - my $dx = ($x2 - $x1) / abs($y2 - $y1); - - for (my $y = $y1; $y != $y2 + $dy; $y += $dy) { - blendpx($gd, $x, $y, $r, $g, $b, $a * (1.0 - $frac)); - blendpx($gd, $x + 1, $y, $r, $g, $b, $a * $frac); - $frac += $dx; - if ($frac > 1) { - $frac -= 1; - ++$x; - } - } - } -} - -sub makegraph { - my $xoffset = 70; - my ($width, $height, $min_x, $max_x, $min_y, $max_y, $tickgran) = @_; - - # Create our base graph - my $graph = new GD::Image($width, $height, 1); - my $white = $graph->colorAllocate(255, 255, 255); - my $gray = $graph->colorAllocate(230, 230, 255); - my $black = $graph->colorAllocate(0, 0, 0); - -# $graph->fill(0, 0, $white); - $graph->filledRectangle(0, 0, $width, $height, $white); # seems to work better - - $::xs = ($width - ($xoffset+2)) / ($max_x - $min_x); - $::ys = ($height - 33) / ($min_y - $max_y); - - # Hour marks - for my $i ($xoffset+1..$width-2) { - if (((($i-($xoffset+1)) / $::xs + $min_x) / 3600) % 2 == 1) { - $graph->line($i, 0, $i, $height - 1, $gray); - } - } - - # Hour text - for my $i (0..23) { - my @bounds = GD::Image::stringFT(undef, $black, "/usr/share/fonts/truetype/msttcorefonts/Arial.ttf", 10, 0, 0, 0, $i); - my $w = $bounds[2] - $bounds[0]; - - # Determine where the center of this will be - my $starthour = POSIX::fmod(($min_x + Time::Zone::tz_local_offset()) / 3600, 24); - my $diff = POSIX::fmod($i - $starthour + 24, 24); - - my $center = ($diff * 3600 + 1800) * $::xs; - - next if ($center - $w / 2 < 1 || $center + $w / 2 > $width - ($xoffset+2)); - $graph->stringFT($black, "/usr/share/fonts/truetype/msttcorefonts/Arial.ttf", 10, 0, $xoffset + $center - $w / 2, $height - 6, $i); - } - - # - # Y lines; we want max 11 of them (zero-line, plus five on each side, or - # whatever) but we don't want the ticks to be on minimum 50 (or - # whatever $tickgran is set to). However, if there would be - # really really few lines, go down an order of magnitude and try - # again. - # - my $ytick; - do { - $ytick = ($max_y - $min_y) / 11; - $ytick = POSIX::ceil($ytick / $tickgran) * $tickgran; - $tickgran *= 0.1; - } while (($max_y - $min_y) / $ytick < 4); - - for my $i (-11..11) { - my $y = ($i * $ytick - $max_y) * $::ys + 10; - next if ($y < 2 || $y > $height - 18); - - if ($i == 0) { - wuline($graph, $xoffset, $y, $width - 1, $y, 0, 0, 0, 1.0); - wuline($graph, $xoffset, $y + 1, $width - 1, $y + 1, 0, 0, 0, 1.0); - } else { - wuline($graph, $xoffset, $y, $width - 1, $y, 0, 0, 0, 0.2); - } - - # text - my $traf = 8 * ($i * $ytick); - my $text; - if ($traf >= 500_000_000) { - $text = (sprintf "%.1f Gbit", ($traf/1_000_000_000)); - } elsif ($traf >= 500_000) { - $text = (sprintf "%.1f Mbit", ($traf/1_000_000)); - } else { - $text = (sprintf "%.1f kbit", ($traf/1_000)); - } - - my @bounds = GD::Image::stringFT(undef, $black, "/usr/share/fonts/truetype/msttcorefonts/Arial.ttf", 10, 0, 0, 0, $text); - my $w = $bounds[2] - $bounds[0]; - my $h = $bounds[1] - $bounds[5]; - - next if ($y - $h/2 < 2 || $y + $h/2 > $height - 12); - $graph->stringFT($black, "/usr/share/fonts/truetype/msttcorefonts/Arial.ttf", 10, 0, ($xoffset - 4) - $w, $y + $h/2, $text); - } - - # Nice border(TM) - $graph->rectangle($xoffset, 0, $width - 1, $height - 1, $black); - - return $graph; -} - -sub plotseries { - my ($graph, $xvals, $yvals, $r, $g, $b, $min_x, $max_y) = @_; - my $xoffset = 70; - - my @xvals = @{$xvals}; - my @yvals = @{$yvals}; - - my $x = $xvals[0]; - my $y = $yvals[0]; - for my $i (1..$#xvals) { - next if ($::xs * ($xvals[$i] - $x) < 2 && $::ys * ($yvals[$i] - $y) > -2); - - wuline($graph, ($x-$min_x) * $::xs + $xoffset + 1, ($y-$max_y) * $::ys + 10, - ($xvals[$i]-$min_x) * $::xs + $xoffset + 1, ($yvals[$i]-$max_y) * $::ys + 10, $r, $g, $b, 1.0); - $x = $xvals[$i]; - $y = $yvals[$i]; - } -} - -1; |