Difference between revisions of "B2.createRevoluteJointDef"
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__NOTOC__ | __NOTOC__ | ||
| − | ''' | + | <languages /> |
| − | ''' | + | '''Available since:''' Gideros 2011.6<br/> |
| − | === | + | '''Class:''' [[Special:MyLanguage/b2|b2]]<br/> |
| − | + | ||
| − | Creates and returns a revolute joint definition table with the bodies, local anchors, and reference angle using a world anchor point. | + | === Description === |
| − | (Please refer to [[b2.World:createJoint]] function for more information about all the information needed to create a revolute joint). | + | 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). | ||
<source lang="lua"> | <source lang="lua"> | ||
(table) = b2.createRevoluteJointDef(bodyA,bodyB,anchorx,anchory) | (table) = b2.createRevoluteJointDef(bodyA,bodyB,anchorx,anchory) | ||
</source> | </source> | ||
| − | === | + | |
| − | '''bodyA''': (b2.Body) | + | === Parameters === |
| − | '''bodyB''': (b2.Body) | + | '''bodyA''': (b2.Body) the first attached body <br/> |
| − | '''anchorx''': (number) | + | '''bodyB''': (b2.Body) the second attached body <br/> |
| − | '''anchory''': (number) | + | '''anchorx''': (number) the x coordinate of the world anchor point <br/> |
| − | === | + | '''anchory''': (number) the y coordinate of the world anchor point <br/> |
| − | ''' | + | |
| − | === | + | === Return values === |
| − | + | '''Returns''' (table) a new revolute joint definition table<br/> | |
| − | + | ||
| − | + | === Examples === | |
| − | '''Revolute joint''' | + | '''Revolute joint''' |
| − | <source lang="lua">--create empty box2d body for joint | + | <source lang="lua"> |
| + | --create empty box2d body for joint | ||
local ground = world:createBody({}) | local ground = world:createBody({}) | ||
ground:setPosition(300, 480) | ground:setPosition(300, 480) | ||
| Line 28: | Line 30: | ||
local jointDef = b2.createRevoluteJointDef(body, ground, 300, 300) | local jointDef = b2.createRevoluteJointDef(body, ground, 300, 300) | ||
local revoluteJoint = world:createJoint(jointDef) | local revoluteJoint = world:createJoint(jointDef) | ||
| − | --will not let ball spin | + | --will not let ball spin forever |
revoluteJoint:setMaxMotorTorque(1) | revoluteJoint:setMaxMotorTorque(1) | ||
| − | revoluteJoint:enableMotor(true)</source> | + | revoluteJoint:enableMotor(true) |
| + | </source> | ||
| + | |||
| + | {{B2}} | ||
Revision as of 03:51, 26 September 2020
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
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 forever
revoluteJoint:setMaxMotorTorque(1)
revoluteJoint:enableMotor(true)
