Difference between revisions of "B2.createRevoluteJointDef"

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__NOTOC__
 
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'''<translate>Available since</translate>:''' Gideros 2011.6<br/>
 
'''<translate>Available since</translate>:''' Gideros 2011.6<br/>
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'''<translate>Class</translate>:''' [[Special:MyLanguage/b2|b2]]<br/>
 
=== <translate>Description</translate> ===
 
=== <translate>Description</translate> ===
 
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Revision as of 09:29, 24 August 2018

Available since: Gideros 2011.6
Class: b2

Description


Creates and returns a revolute joint definition table with the bodies, local anchors, and reference angle using a world anchor point.
(Please refer to b2.World:createJoint function for more information about all the information needed to create a revolute joint).

(table) = b2.createRevoluteJointDef(bodyA,bodyB,anchorx,anchory)

Parameters

bodyA: (b2.Body) the first attached body
bodyB: (b2.Body) the second attached body
anchorx: (number) the x coordinate of the world anchor point
anchory: (number) the y coordinate of the world anchor point

Return values

Returns (table) A new revolute joint definition table

Examples

Example

local jointdef = b2.createRevoluteJointDef(bodyA, bodyB, anchorx, anchory)
local joint = b2.World:createJoint(jointdef)

Revolute joint

--create empty box2d body for joint
local ground = world:createBody({})
ground:setPosition(300, 480)

local jointDef = b2.createRevoluteJointDef(body, ground, 300, 300)
local revoluteJoint = world:createJoint(jointDef)
--will not let ball spin for ever
revoluteJoint:setMaxMotorTorque(1)
revoluteJoint:enableMotor(true)