NAME

Box2D::b2RayCastCallback - Callback class for ray casts

SYNOPSIS

    package My::RayCastCallback;

    use parent qw(Box2D::b2RayCastCallback);

    sub ReportFixture {
        my ( $self, $fixture, $point, $normal, $fraction ) = @_;

        // Do something
    }

    1;

DESCRIPTION

Callback class for ray casts. See "RayCast" in Box2D::b2World.

METHODS

new

Creates and returns a new Box2D::b2RayCastCallback. This is an inheritance friendly sub so you're free to leave it as default. Remember to call super in your own code, don't forget to call this!

ReportFixture( $fixture, $point, $normal, $fraction )

Called for each fixture found in the query. You control how the ray cast proceeds by returning a float.

Override this method in your subclass.

Parameters:

Box2D::b2Fixture $fixture the fixture hit by the ray

Box2D::b2Vec2 $point the point of initial intersection

Box2D::b2Vec2 $normal the normal vector at the point of intersection

float32 $fraction the fraction of the distance to the point of intersection

Returns:

-1 to ignore the fixture and continue

0 to terminate the ray cast

$fraction to clip the ray for closest hit

1 don't clip the ray and continue

BUGS

Report bugs at https://github.com/PerlGameDev/Box2D-perl/issues

AUTHORS

See "AUTHORS" in Box2D

COPYRIGHT & LICENSE

See "COPYRIGHT & LICENSE" in Box2D

SEE ALSO

Box2D

Box2D::b2World