use strict;
use warnings;
use FFI::Platypus 1.00;
use FFI::C::ArrayDef;
use FFI::C::StructDef;

my $ffi = FFI::Platypus->new( api => 1 );
# See FFI::Platypus::Bundle for how bundle works.
$ffi->bundle;

my $point_def = FFI::C::StructDef->new(
  $ffi,
  name  => 'point_t',
  class => 'Point',
  members => [
    x => 'double',
    y => 'double',
  ],
);

my $rect_def = FFI::C::ArrayDef->new(
  $ffi,
  name    => 'rectangle_t',
  class   => 'Rectangle',
  members => [
    $point_def, 2,
  ]
);

$ffi->attach( print_rectangle => ['rectangle_t'] );

my $rect = Rectangle->new([
  { x => 1.5,  y => 2.0  },
  { x => 3.14, y => 11.0 },
]);

print_rectangle($rect);  # [[1.5 2] [3.14 11]]

# move rectangle on the y axis
$rect->[$_]->y( $rect->[$_]->y + 1.0 ) for 0..1;

print_rectangle($rect);  # [[1.5 3] [3.14 12]]