From: Vincent Pit <vince@profvince.com>
Date: Wed, 21 Jul 2010 12:47:03 +0000 (+0200)
Subject: Introduce LaTeX::TikZ::Set::Polyline
X-Git-Tag: v0.01~30
X-Git-Url: http://git.vpit.fr/?p=perl%2Fmodules%2FLaTeX-TikZ.git;a=commitdiff_plain;h=080eb1e263eb7c3700a9ebfd96522eaa534a0b6c

Introduce LaTeX::TikZ::Set::Polyline
---

diff --git a/MANIFEST b/MANIFEST
index 8cda4e2..a9a373a 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -28,6 +28,7 @@ lib/LaTeX/TikZ/Set/Mutable.pm
 lib/LaTeX/TikZ/Set/Op.pm
 lib/LaTeX/TikZ/Set/Path.pm
 lib/LaTeX/TikZ/Set/Point.pm
+lib/LaTeX/TikZ/Set/Polyline.pm
 lib/LaTeX/TikZ/Set/Raw.pm
 lib/LaTeX/TikZ/Set/Rectangle.pm
 lib/LaTeX/TikZ/Set/Sequence.pm
diff --git a/lib/LaTeX/TikZ/Interface.pm b/lib/LaTeX/TikZ/Interface.pm
index 91342ab..6496b06 100644
--- a/lib/LaTeX/TikZ/Interface.pm
+++ b/lib/LaTeX/TikZ/Interface.pm
@@ -63,6 +63,7 @@ sub load {
 
  require LaTeX::TikZ::Set::Point;     # point
  require LaTeX::TikZ::Set::Line;      # line
+ require LaTeX::TikZ::Set::Polyline;  # polyline, closed_polyline
  require LaTeX::TikZ::Set::Rectangle; # rectangle
  require LaTeX::TikZ::Set::Circle;    # circle
 
diff --git a/lib/LaTeX/TikZ/Set/Point.pm b/lib/LaTeX/TikZ/Set/Point.pm
index 0a4911f..409db5f 100644
--- a/lib/LaTeX/TikZ/Set/Point.pm
+++ b/lib/LaTeX/TikZ/Set/Point.pm
@@ -33,6 +33,10 @@ coerce 'LaTeX::TikZ::Set::Point'
     => from 'Any'
     => via { __PACKAGE__->new(point => $_) };
 
+coerce 'LaTeX::TikZ::Point::Autocoerce'
+    => from 'LaTeX::TikZ::Set::Point'
+    => via { $_->point };
+
 sub path {
  my ($set, $tikz) = @_;
 
diff --git a/lib/LaTeX/TikZ/Set/Polyline.pm b/lib/LaTeX/TikZ/Set/Polyline.pm
new file mode 100644
index 0000000..ef339e4
--- /dev/null
+++ b/lib/LaTeX/TikZ/Set/Polyline.pm
@@ -0,0 +1,96 @@
+package LaTeX::TikZ::Set::Polyline;
+
+use strict;
+use warnings;
+
+=head1 NAME
+
+LaTeX::TikZ::Set::Polyline - A set object representing a line.
+
+=head1 VERSION
+
+Version 0.01
+
+=cut
+
+our $VERSION = '0.01';
+
+use LaTeX::TikZ::Set::Point;
+
+use Any::Moose;
+use Any::Moose 'Util::TypeConstraints';
+
+with 'LaTeX::TikZ::Set::Op';
+
+subtype 'LaTeX::TikZ::Set::Polyline::Vertices'
+     => as 'ArrayRef[LaTeX::TikZ::Set::Point]'
+     => where { @$_ >= 2 }
+     => message { 'at least two LaTeX::TikZ::Set::Point objects are needed in order to build a polyline' };
+
+coerce 'LaTeX::TikZ::Set::Polyline::Vertices'
+    => from 'ArrayRef[Any]'
+    => via { [ map LaTeX::TikZ::Set::Point->new(point => $_), @$_ ] };
+
+has '_points' => (
+ is       => 'ro',
+ isa      => 'LaTeX::TikZ::Set::Polyline::Vertices',
+ init_arg => 'points',
+ required => 1,
+ coerce   => 1,
+);
+
+sub points { @{$_[0]->_points} }
+
+has 'closed' => (
+ is      => 'ro',
+ isa     => 'Bool',
+ default => 0,
+);
+
+sub path {
+ my $set = shift;
+
+ join ' -- ', map($_->path(@_), $set->points),
+              ($set->closed ? 'cycle' : ());
+}
+
+use LaTeX::TikZ::Interface polyline => sub {
+ shift;
+
+ __PACKAGE__->new(points => \@_);
+};
+
+use LaTeX::TikZ::Interface closed_polyline => sub {
+ shift;
+
+ __PACKAGE__->new(points => \@_, closed => 1);
+};
+
+__PACKAGE__->meta->make_immutable;
+
+=head1 AUTHOR
+
+Vincent Pit, C<< <perl at profvince.com> >>, L<http://www.profvince.com>.
+
+You can contact me by mail or on C<irc.perl.org> (vincent).
+
+=head1 BUGS
+
+Please report any bugs or feature requests to C<bug-latex-tikz at rt.cpan.org>, or through the web interface at L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=LaTeX-TikZ>.
+I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.
+
+=head1 SUPPORT
+
+You can find documentation for this module with the perldoc command.
+
+    perldoc LaTeX::TikZ
+
+=head1 COPYRIGHT & LICENSE
+
+Copyright 2010 Vincent Pit, all rights reserved.
+
+This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
+
+=cut
+
+1; # End of LaTeX::TikZ::Set::Polyline
diff --git a/t/00-load.t b/t/00-load.t
index 4eac5ce..33cfe89 100644
--- a/t/00-load.t
+++ b/t/00-load.t
@@ -3,7 +3,7 @@
 use strict;
 use warnings;
 
-use Test::More tests => 29;
+use Test::More tests => 30;
 
 BEGIN {
  use_ok( 'LaTeX::TikZ' );
@@ -31,6 +31,7 @@ BEGIN {
  use_ok( 'LaTeX::TikZ::Set::Op' );
  use_ok( 'LaTeX::TikZ::Set::Path' );
  use_ok( 'LaTeX::TikZ::Set::Point' );
+ use_ok( 'LaTeX::TikZ::Set::Polyline' );
  use_ok( 'LaTeX::TikZ::Set::Raw' );
  use_ok( 'LaTeX::TikZ::Set::Rectangle' );
  use_ok( 'LaTeX::TikZ::Set::Sequence' );
diff --git a/t/01-api.t b/t/01-api.t
index 7a29a36..dc15124 100644
--- a/t/01-api.t
+++ b/t/01-api.t
@@ -3,7 +3,7 @@
 use strict;
 use warnings;
 
-use Test::More tests => 5 + 13 + 12;
+use Test::More tests => 5 + 15 + 12;
 
 use LaTeX::TikZ;
 
@@ -31,7 +31,7 @@ is(prototype('Tikz'), '', 'main::Tikz is actually a constant');
 my @methods = qw/
  raw
  path seq
- point line rectangle circle
+ point line polyline closed_polyline rectangle circle
  raw_mod
  clip layer
  width color fill
diff --git a/t/12-geo.t b/t/12-geo.t
index ab56eaa..3a7eef7 100644
--- a/t/12-geo.t
+++ b/t/12-geo.t
@@ -3,7 +3,7 @@
 use strict;
 use warnings;
 
-use Test::More tests => 11 + 2 * 10;
+use Test::More tests => (11 + 2 * 5) + 2 * (10 + 2 * 3);
 
 use Math::Complex;
 
@@ -32,6 +32,11 @@ sub check {
  is_deeply $body, $exp, $desc;
 }
 
+sub failed_valid {
+ my ($tc) = @_;
+ qr/Validation failed for '\Q$tc\E'/;
+}
+
 my $o = Tikz->point(0);
 my $z = Tikz->point(1+2*i);
 
@@ -55,6 +60,53 @@ check $l, 'a line from two Tikz points', <<'RES';
 \draw (-1cm,2cm) -- (3cm,-4cm) ;
 RES
 
+# Polyline
+
+my $w = Tikz->point(3, -4);
+
+for my $closed (0, 1) {
+ my $polyline = $closed ? 'closed_polyline' : 'polyline';
+ my $cycle    = $closed ? '-- cycle '       : '';
+ my $desc     = $closed ? 'closed polyline' : 'polyline';
+
+ my $pl = eval {
+  Tikz->$polyline($o, $z);
+ };
+ is $@, '', "creating a $desc from two Tikz points doesn't croak";
+
+ check $pl, "a $desc from two Tikz points", <<"RES";
+\\draw (0cm,0cm) -- (1cm,2cm) $cycle;
+RES
+
+ $pl = eval {
+  Tikz->$polyline($o, $z, $w);
+ };
+ is $@, '', "creating a $desc from three Tikz points doesn't croak";
+
+ check $pl, "a $desc from three Tikz points", <<"RES";
+\\draw (0cm,0cm) -- (1cm,2cm) -- (3cm,-4cm) $cycle;
+RES
+
+ $pl = eval {
+  Tikz->$polyline(-1, (2-3*i), [-4, 5]);
+ };
+ is $@, '', "creating a $desc from three Tikz points doesn't croak";
+
+ check $pl, "a $desc from three Tikz points", <<"RES";
+\\draw (-1cm,0cm) -- (2cm,-3cm) -- (-4cm,5cm) $cycle;
+RES
+
+ $pl = eval {
+  Tikz->$polyline($o);
+ };
+ like $@, qr/at least two LaTeX::TikZ::Set::Point objects are needed in order to build a polyline/, "creating a $desc from only one Tikz point croaks";
+
+ $pl = eval {
+  Tikz->$polyline(qw/foo bar/);
+ };
+ like $@, failed_valid('LaTeX::TikZ::Point::Autocoerce'), "creating a $desc from two string croaks";
+}
+
 # Rectangle
 
 my $r = eval {