Box2D::b2LineJointDef - Line joint definition.
my $joint_def = Box2D::b2LineJointDef->new(); $joint_def->Initialize( $body_a, $body_b, $anchor, $axis ); $joint_def->enableLimit( 1 ); $joint_def->lowerTranslation( $lower_translation ); $joint_def->upperTranslation( $upper_translation ); $joint_def->enableMotor( 1 ); $joint_def->motorSpeed( $speed ); $joint_def->maxMotorForce( $max_force ); my $joint = $world->CreateJoint( $joint_def );
Line joint definition. This requires defining a line of motion using an axis and an anchor point. The definition uses local anchor points and a local axis so that the initial configuration can violate the constraint slightly. The joint translation is zero when the local anchor points coincide in world space. Using local anchors and a local axis helps when saving and loading a game.
Default constructor.
Returns a Box2D::b2LineJointDef
Initialize the bodies, anchors, axis, and reference angle using the world anchor and world axis.
Parameters:
Box2D::b2Body
$bodyA
Box2D::b2Body
$bodyB
Box2D::b2Vec2
$anchor
Box2D::b2Vec2
$axis
Enable/disable the joint limit.
Parameters:
bool
$enableLimit
(optional)Returns a bool
Enable/disable the joint motor.
Parameters:
bool
$enableMotor
(optional)Returns a bool
The local anchor point relative to body1's origin.
Parameters:
Box2D::b2Vec2
$localAnchorA
(optional)Returns a Box2D::b2Vec2
The local anchor point relative to body2's origin.
Parameters:
Box2D::b2Vec2
$localAnchorB
(optional)Returns a Box2D::b2Vec2
The local translation axis in body1.
Parameters:
Box2D::b2Vec2
$localAxisA
(optional)Returns a Box2D::b2Vec2
The lower translation limit, usually in meters.
Parameters:
float32
$lowerTranslation
(optional)Returns a float32
The maximum motor torque, usually in N-m.
Parameters:
float32
$maxMotorForce
(optional)Returns a float32
The desired motor speed in radians per second.
Parameters:
float32
$motorSpeed
(optional)Returns a float32
The upper translation limit, usually in meters.
Parameters:
float32
$upperTranslation
(optional)Returns a float32
See "BUGS" in Box2D