First cut at the documentation

[perl/modules/LaTeX-TikZ.git] / lib / LaTeX / TikZ / Set.pm

diff --git a/lib/LaTeX/TikZ/Set.pm b/lib/LaTeX/TikZ/Set.pm
index da636a42633ed37bd37d04d1c9126060b7a8ac39..505dfec1a823712e0ce06477ed39a186d4416a5c 100644 (file)
--- a/lib/LaTeX/TikZ/Set.pm
+++ b/lib/LaTeX/TikZ/Set.pm
@@ -23,9 +23,13 @@ use LaTeX::TikZ::Tools;
 
 use Any::Moose 'Role';
 
-requires qw(
- draw
-);
+=head1 ATTRIBUTES
+
+=head2 C<mods>
+
+Returns the list of the L<LaTeX::TikZ::Mod> objects associated with the current set.
+
+=cut
 
 has '_mods' => (
  is       => 'ro',
@@ -37,6 +41,30 @@ has '_mods' => (
 
 sub mods { @{$_[0]->_mods} }
 
+=head1 METHODS
+
+This method is required by the interface :
+
+=over 4
+
+=item *
+
+C<draw>
+
+=back
+
+=cut
+
+requires qw(
+ draw
+);
+
+=head2 C<mod @mods>
+
+Apply the given list of L<LaTeX::TikZ::Mod> objects to the current set.
+
+=cut
+
 my $ltm_tc  = LaTeX::TikZ::Tools::type_constraint('LaTeX::TikZ::Mod');
 my $ltml_tc = LaTeX::TikZ::Tools::type_constraint('LaTeX::TikZ::Mod::Layer');
 my $ltmc_tc = LaTeX::TikZ::Tools::type_constraint('LaTeX::TikZ::Mod::Clip');
@@ -44,9 +72,10 @@ my $ltmc_tc = LaTeX::TikZ::Tools::type_constraint('LaTeX::TikZ::Mod::Clip');
 sub mod {
  my $set = shift;
 
- $ltm_tc->assert_valid($_) for @_;
+ my @mods = map $ltm_tc->coerce($_), @_;
+ $ltm_tc->assert_valid($_) for @mods;
 
- push @{$set->_mods}, @_;
+ push @{$set->_mods}, @mods;
 
  $set;
 }
@@ -55,8 +84,22 @@ sub mod {
  our %mods;
  our $last_mod = 0;
 
- sub mods_unique {
-  my ($set) = @_;
+ around 'draw' => sub {
+  my ($orig, $set, $tikz) = @_;
+
+  local $last_mod = $last_mod;
+
+  # Save a deep copy
+  my %saved_idx = map { $_ => $#{$mods{$_}} } keys %mods;
+  my $guard     = Scope::Guard->new(sub {
+   for (keys %mods) {
+    if (exists $saved_idx{$_}) {
+     $#{$mods{$_}} = $saved_idx{$_};
+    } else {
+     delete $mods{$_};
+    }
+   }
+  });
 
   my (@mods, $last_layer);
 MOD:
@@ -83,28 +126,6 @@ MOD:
                    values %mods;
   }
 
-  return @mods;
- }
-
- around 'draw' => sub {
-  my ($orig, $set, $tikz) = @_;
-
-  local $last_mod = $last_mod;
-
-  # Save a deep copy
-  my %saved_idx = map { $_ => $#{$mods{$_}} } keys %mods;
-  my $guard     = Scope::Guard->new(sub {
-   for (keys %mods) {
-    if (exists $saved_idx{$_}) {
-     $#{$mods{$_}} = $saved_idx{$_};
-    } else {
-     delete $mods{$_};
-    }
-   }
-  });
-
-  my @mods = $set->mods_unique;
-
   my $body = $set->$orig($tikz);
 
   if (@mods) {
@@ -117,6 +138,13 @@ MOD:
  };
 }
 
+=head2 C<layer $layer>
+
+Puts the current set in the corresponding layer.
+This is a shortcut for C<< $set->mod(Tikz->layer($layer)) >>.
+
+=cut
+
 sub layer {
  return $_[0] unless @_ > 1;
 
@@ -128,12 +156,19 @@ sub layer {
  )
 }
 
+=head2 C<clip $path>
+
+Clips the current set by the path given by C<$path>.
+This is a shortcut for C<< $set->mod(Tikz->clip($path)) >>.
+
+=cut
+
 sub clip {
  return $_[0] unless @_ > 1;
 
  $_[0]->mod(
   map {
-   $ltmc_tc->check($_) ? $_ : LaTeX::TikZ::Mod::Clip->new($_)
+   $ltmc_tc->check($_) ? $_ : LaTeX::TikZ::Mod::Clip->new(clip => $_)
   } @_[1 .. $#_]
  )
 }