++ed by:
GARU

1 PAUSE user
1 non-PAUSE user.

Jeffrey T. Palmer
and 1 contributors

NAME

Box2D::b2PulleyJoint - Connects two bodies and two ground points.

SYNOPSIS

  my $joint = $world->CreateJoint( $joint_def );
  my $ratio = $joint->GetRatio();

DESCRIPTION

The pulley joint is connected to two bodies and two fixed ground points. The pulley supports a ratio such that: length1 + ratio * length2 <= constant

Yes, the force transmitted is scaled by the ratio. The pulley also enforces a maximum length limit on both sides. This is useful to prevent one side of the pulley hitting the top.

METHODS

GetAnchorA()

Get the anchor point on bodyA in world coordinates. Implements Box2D::b2Joint.

Returns a Box2D::b2Vec2

GetAnchorB()

Get the anchor point on bodyB in world coordinates. Implements Box2D::b2Joint.

Returns a Box2D::b2Vec2

GetGroundAnchorA()

Get the first ground anchor.

Returns a Box2D::b2Vec2

GetGroundAnchorB()

Get the second ground anchor.

Returns a Box2D::b2Vec2

GetLength1()

Get the current length of the segment attached to body1.

Returns a float32

GetLength2()

Get the current length of the segment attached to body2.

Returns a float32

GetRatio()

Get the pulley ratio.

Returns a float32

GetReactionForce( $inv_dt )

Get the reaction force on body2 at the joint anchor in Newtons. Implements Box2D::b2Joint.

Parameters:

  • float32 $inv_dt

Returns a Box2D::b2Vec2

GetReactionTorque( $inv_dt )

Get the reaction torque on body2 in N*m. Implements Box2D::b2Joint.

Parameters:

  • float32 $inv_dt

Returns a float32

SEE ALSO

BUGS

See "BUGS" in Box2D

AUTHORS

See "AUTHORS" in Box2D

COPYRIGHT & LICENSE

See "COPYRIGHT & LICENSE" in Box2D