Difference between revisions of "B2.WheelJoint"
From GiderosMobile
| Line 24: | Line 24: | ||
| style="width: 50%;"| | | style="width: 50%;"| | ||
=== Methods === | === Methods === | ||
| − | [[b2.WheelJoint:enableMotor]] | + | [[b2.WheelJoint:enableMotor]] {{<translate>enables or disables the joint motor</translate>}}<br/> |
| − | [[b2.WheelJoint:getJointSpeed]] | + | [[b2.WheelJoint:getJointSpeed]] {{<translate>returns the current joint translation speed in meters per second.</translate>}}<br/> |
| − | [[b2.WheelJoint:getJointTranslation]] | + | [[b2.WheelJoint:getJointTranslation]] {{<translate>returns the current joint translation in meters.</translate>}}<br/> |
| − | [[b2.WheelJoint:getMaxMotorTorque]] | + | [[b2.WheelJoint:getMaxMotorTorque]] {{<translate>returns the maximum motor torque in N*m</translate>}}<br/> |
| − | [[b2.WheelJoint:getMotorSpeed]] | + | [[b2.WheelJoint:getMotorSpeed]] {{<translate>returns the motor speed in radians per second</translate>}}<br/> |
| − | [[b2.WheelJoint:getSpringDampingRatio]] | + | [[b2.WheelJoint:getSpringDampingRatio]] {{<translate>returns the spring damping ratio</translate>}}<br/> |
| − | [[b2.WheelJoint:getSpringFrequencyHz]] | + | [[b2.WheelJoint:getSpringFrequencyHz]] {{<translate>returns the spring frequency in Hertz</translate>}}<br/> |
| − | [[b2.WheelJoint:isMotorEnabled]] | + | [[b2.WheelJoint:isMotorEnabled]] {{<translate>is the joint motor enabled?</translate>}}<br/> |
| − | [[b2.WheelJoint:setMaxMotorTorque]] | + | [[b2.WheelJoint:setMaxMotorTorque]] {{<translate>sets the maximum motor torque in N*m</translate>}}<br/> |
| − | [[b2.WheelJoint:setMotorSpeed]] | + | [[b2.WheelJoint:setMotorSpeed]] {{<translate>sets the motor speed in radians per second</translate>}}<br/> |
| − | [[b2.WheelJoint:setSpringDampingRatio]] | + | [[b2.WheelJoint:setSpringDampingRatio]] {{<translate>sets the spring damping ratio</translate>}}<br/> |
| − | [[b2.WheelJoint:setSpringFrequencyHz]] | + | [[b2.WheelJoint:setSpringFrequencyHz]] {{<translate>sets the spring frequency in Hertz (0 = disable the spring)</translate>}}<br/> |
| style="width: 50%;"| | | style="width: 50%;"| | ||
=== Events === | === Events === | ||
=== Constants === | === Constants === | ||
|} | |} | ||
Revision as of 15:20, 23 August 2018
Supported platforms: android, ios, mac, pc
Available since: Gideros 2011.6
Description
A wheel joint provides two degrees of freedom: translation along an axis fixed in bodyA and rotation in the plane. You can use a
joint limit to restrict the range of motion and a joint motor to drive the rotation or to model rotational friction. This joint
is designed for vehicle suspensions.
Examples
Wheel joint
--create empty box2d body for joint
local ground = world:createBody({})
ground:setPosition(350, 480)
--axisx, axisy values usually between 0 and 1
--0 0 moves freely
--0 1 force pulling back on y axis
--1 0 force pulling back on x axis
--1 1 force pulling back all diretions
local jointDef = b2.createWheelJointDef(body, ground, 350, 200, 1, 1)
local wheelJoint = world:createJoint(jointDef)
