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- # $File: //depot/RG/rg/lib/RG/lib/GD/Graph/cylinder.pm $ $Author: autrijus $
- # $Revision: #3 $ $Change: 370 $ $DateTime: 2002/07/17 20:38:38 $
-
- package GD::Graph::cylinder;
-
- use strict;
-
- use GD::Graph::axestype3d;
- use GD::Graph::utils qw(:all);
- use GD::Graph::colour qw(:colours);
-
- use base qw/GD::Graph::bars3d/;
- $GD::Graph::cylinder::VERSION = '0.63';
-
- my %Defaults = (
- # Spacing between the bars
- bar_spacing => 0,
-
- # The 3-d extrusion depth of the bars
- bar_depth => 10,
- );
-
- sub initialise
- {
- my $self = shift;
-
- my $rc = $self->SUPER::initialise();
- $self->set(correct_width => 1);
-
- while( my($key, $val) = each %Defaults ) {
- $self->{$key} = $val
- } # end while
-
- return $rc;
- } # end initialise
-
- sub draw_bar_h {
- my $self = shift;
- my $g = shift;
- my( $l, $t, $r, $b, $dsci, $brci, $neg ) = @_;
- my $fnord = $g->colorAllocate(0,0,0);
-
- my $depth = $self->{bar_depth};
-
- my ($lighter, $darker) = ($dsci, $dsci);
- if ($self->{'3d_shading'}) {
- $lighter = $self->{'3d_highlights'}[$dsci];
- $darker = $self->{'3d_shadows'}[$dsci];
- }
- $g->line($l+$depth, $t+1, $r+$depth, $t+1, $dsci);
- $g->line($l+$depth, $b, $r+$depth, $b, $dsci);
- $g->arc($r+$depth, ($t+$b)/2, $depth*2, ($b-$t), 270, 90, $dsci);
- $g->arc($l+$depth, ($t+$b)/2, $depth*2, ($b-$t), 90, 270, $dsci);
- # find border
- my $foo = $l+$depth;
- --$foo
- until $foo == $l || $g->getPixel($foo, $t+($b-$t)/5) == $dsci;
- my $bar = $foo+1;
- ++$bar
- until $bar == $foo || $g->getPixel($bar, $t+($b-$t)/5) == $dsci;
- $g->line($foo, $t+($b-$t)/5, $bar, $t+($b-$t)/5, $dsci);
- $g->line($foo, $b-($b-$t)/5, $bar, $b-($b-$t)/5, $dsci);
- $g->fillToBorder($l+$depth, ($t+$b)/2, $dsci, $dsci);
- $g->arc($l+$depth, ($b+$t)/2, $depth*2, ($b-$t), 90, 270, $dsci);
- if ($foo < $bar + 3) {
- $g->fillToBorder(($l+$r)/2+$depth, $t+($b-$t)/5-1, $dsci, $lighter)
- unless $g->getPixel(($l+$r)/2+$depth, $t+($b-$t)/5-1) == $dsci;
- $g->fillToBorder(($l+$r)/2+$depth, $b-($b-$t)/5+1, $dsci, $darker)
- unless $g->getPixel(($l+$r)/2+$depth, $b-($b-$t)/5+1) == $dsci;
- $g->fillToBorder(($l+$r)/2, ($t+$b)/2, $dsci, $dsci);
- }
- $g->arc($l+$depth, ($b+$t)/2, $depth*2, ($b-$t), 90, 270, $brci);
- $g->arc($r+$depth, ($b+$t)/2, $depth*2, ($b-$t), 0, 360, $brci);
- $g->line($l+$depth, $t+1, $r+$depth, $t+1, $brci);
- $g->line($l+$depth, $b, $r+$depth, $b, $brci);
- $g->fillToBorder($r+$depth, ($b+$t)/2, $brci, $dsci);
- }
-
- sub draw_bar {
- my $self = shift;
- return $self->draw_bar_h(@_) if $self->{rotate_chart};
- my $g = shift;
- my( $l, $t, $r, $b, $dsci, $brci, $neg ) = @_;
- my $fnord = $g->colorAllocate(0,0,0);
-
- my $depth = $self->{bar_depth};
-
- my ($lighter, $darker) = ($dsci, $dsci);
- if ($self->{'3d_shading'}) {
- $lighter = $self->{'3d_highlights'}[$dsci];
- $darker = $self->{'3d_shadows'}[$dsci];
- }
-
- $g->line($l+1, $t-$depth, $l+1, $b-$depth, $dsci);
- $g->line($r, $t-$depth, $r, $b-$depth, $dsci);
-
- $g->arc(($l+$r)/2, $t-$depth, ($r-$l), $depth*2, 180, 360, $dsci);
- $g->arc(($l+$r)/2, $b-$depth, ($r-$l), $depth*2, 0, 180, $dsci);
- # find border
- my $foo = $b-$depth+1;
- ++$foo
- until $foo == $b || $g->getPixel($l+($r-$l)/5,$foo) == $dsci;
- my $bar = $foo-1;
- --$bar
- until $bar == $foo || $g->getPixel($l+($r-$l)/5,$bar) == $dsci;
- $g->line($l+($r-$l)/5, $bar, $l+($r-$l)/5, $foo, $dsci);
- $g->line($r-($r-$l)/5, $bar, $r-($r-$l)/5, $foo, $dsci);
- $g->fillToBorder(($l+$r)/2, $t-$depth, $dsci, $dsci);
- $g->arc(($l+$r)/2, $b-$depth, ($r-$l), $depth*2, 0, 180, $dsci);
- if ($foo > $bar + 3) {
- $g->fillToBorder($l+($r-$l)/5-1, ($foo+$bar)/2, $dsci, $lighter)
- unless $g->getPixel($l+($r-$l)/5-1, ($foo+$bar)/2) == $dsci;
- $g->fillToBorder($r-($r-$l)/5+1, ($foo+$bar)/2, $dsci, $darker)
- unless $g->getPixel($r-($r-$l)/5+1, ($foo+$bar)/2) == $dsci;
- $g->fillToBorder(($l+$r)/2, ($t+$b)/2, $dsci, $dsci);
- }
- $g->arc(($l+$r)/2, $b-$depth, ($r-$l), $depth*2, 0, 180, $brci);
- $g->arc(($l+$r)/2, $t-$depth, ($r-$l), $depth*2, 0, 360, $brci);
- $g->line($l+1, $t-$depth, $l+1, $b-$depth, $brci);
- $g->line($r, $t-$depth, $r, $b-$depth, $brci);
- $g->fillToBorder(($l+$r)/2, $t-$depth, $brci, $dsci);
- }
-
- 1;
-
-
-