From: Vincent Pit <vince@profvince.com>
Date: Thu, 22 Jul 2010 19:08:04 +0000 (+0200)
Subject: Add label and position support to Set::Point
X-Git-Tag: v0.01~13
X-Git-Url: http://git.vpit.fr/?p=perl%2Fmodules%2FLaTeX-TikZ.git;a=commitdiff_plain;h=c0c71aaf7da22da2c52cec635cb899a25599dad7

Add label and position support to Set::Point
---

diff --git a/lib/LaTeX/TikZ/Set/Point.pm b/lib/LaTeX/TikZ/Set/Point.pm
index 5bf292b..b45adaf 100644
--- a/lib/LaTeX/TikZ/Set/Point.pm
+++ b/lib/LaTeX/TikZ/Set/Point.pm
@@ -33,6 +33,28 @@ has 'point' => (
  handles  => [ qw/x y/ ],
 );
 
+has 'label' => (
+ is      => 'rw',
+ isa     => 'Maybe[Str]',
+ default => undef,
+);
+
+enum 'LaTeX::TikZ::Set::Point::Positions' => (
+ 'below left',
+ 'below',
+ 'below right',
+ 'right',
+ 'above right',
+ 'above',
+ 'above left',
+ 'left',
+);
+
+has 'pos' => (
+ is  => 'rw',
+ isa => 'Maybe[LaTeX::TikZ::Set::Point::Positions]',
+);
+
 coerce 'LaTeX::TikZ::Set::Point'
     => from 'Any'
     => via { __PACKAGE__->new(point => $_) };
@@ -46,24 +68,45 @@ sub path {
 
  my $p = $set->point;
 
- '(' . $tikz->len($p->x) . ',' . $tikz->len($p->y) . ')';
+ my $path = '(' . $tikz->len($p->x) . ',' . $tikz->len($p->y) . ')';
+
+ my $label = $set->label;
+ if (defined $label) {
+  my $pos = $set->pos;
+  $pos = 'above' unless defined $pos;
+
+  my $size = sprintf '%0.1fpt', 2 * $tikz->scale / 5;
+  $path .= " [fill] circle ($size) " . $tikz->label($label, $pos);
+ }
+
+ $path;
 }
 
 LaTeX::TikZ::Interface->register(
  point => sub {
   shift;
 
-  my $point = @_ == 0 ? 0
-                      : @_ == 1 ? $_[0]
-                                : \@_;
-  __PACKAGE__->new(point => $point);
+  my $point;
+  if (@_ == 0) {
+   $point = 0;
+  } elsif (@_ % 2) {
+   $point = shift;
+  } else { # @_ even, @_ >= 2
+   $point = [ shift, shift ];
+  }
+
+  __PACKAGE__->new(point => $point, @_);
  },
 );
 
 LaTeX::TikZ::Functor->default_rule(
  (__PACKAGE__) => sub {
   my ($functor, $set, @args) = @_;
-  $set->new(point => $set->point);
+  $set->new(
+   point => $set->point,
+   label => $set->label,
+   pos   => $set->pos,
+  );
  }
 );