use strict;
use warnings;
use Box2D;
use Test::More;

my ( $a11, $a12, $a21, $a22 ) = ( 1.0, 2.0, 3.0, 4.0 );
my ( $b11, $b12, $b21, $b22 ) = ( 5.0, 6.0, 7.0, 8.0 );

my $col1a = Box2D::b2Vec2->new( $a11, $a21 );
my $col2a = Box2D::b2Vec2->new( $a12, $a22 );
my $col1b = Box2D::b2Vec2->new( $b11, $b21 );
my $col2b = Box2D::b2Vec2->new( $b12, $b22 );

my $matrix = Box2D::b2Mat22->new( $a11, $a12, $a21, $a22 );

ok( $matrix, "new" );
isa_ok( $matrix, "Box2D::b2Mat22" );

is( $matrix->col1->x, $a11, "Get col1->x" );
is( $matrix->col2->x, $a12, "Get col2->x" );
is( $matrix->col1->y, $a21, "Get col1->y" );
is( $matrix->col2->y, $a22, "Get col2->y" );

$matrix->Set( $col1b, $col2b );

is( $matrix->col1->x, $b11, "Set a11" );
is( $matrix->col2->x, $b12, "Set a12" );
is( $matrix->col1->y, $b21, "Set a21" );
is( $matrix->col2->y, $b22, "Set a22" );

$matrix->SetIdentity();

is( $matrix->col1->x, 1, "SetIdentity a11" );
is( $matrix->col2->x, 0, "SetIdentity a12" );
is( $matrix->col1->y, 0, "SetIdentity a21" );
is( $matrix->col2->y, 1, "SetIdentity a22" );

$matrix->Set( $col1b, $col2b );

$matrix->SetZero();

is( $matrix->col1->x, 0, "SetZero a11" );
is( $matrix->col2->x, 0, "SetZero a12" );
is( $matrix->col1->y, 0, "SetZero a21" );
is( $matrix->col2->y, 0, "SetZero a22" );

$matrix->col1($col1b);
$matrix->col2($col2b);

is( $matrix->col1->x, $b11, "col1 x" );
is( $matrix->col2->x, $b12, "col2 x" );
is( $matrix->col1->y, $b21, "col1 y" );
is( $matrix->col2->y, $b22, "col2 y" );

done_testing;