Difference between revisions of "B2.createGearJointDef"
From GiderosMobile
| Line 1: | Line 1: | ||
__NOTOC__ | __NOTOC__ | ||
| − | '''Available since:''' Gideros 2011.6<br/> | + | '''<translate>Available since</translate>:''' Gideros 2011.6<br/> |
| − | === Description === | + | === <translate>Description</translate> === |
<translate><br /> | <translate><br /> | ||
Creates and returns a gear joint definition table.<br /> | Creates and returns a gear joint definition table.<br /> | ||
| Line 9: | Line 9: | ||
(table) = b2.createGearJointDef(bodyA,bodyB,joint1,joint2,ratio) | (table) = b2.createGearJointDef(bodyA,bodyB,joint1,joint2,ratio) | ||
</source> | </source> | ||
| − | === Parameters === | + | === <translate>Parameters</translate> === |
'''bodyA''': (b2.Body) <translate>the first attached body</translate> <br/> | '''bodyA''': (b2.Body) <translate>the first attached body</translate> <br/> | ||
'''bodyB''': (b2.Body) <translate>the second attached body</translate> <br/> | '''bodyB''': (b2.Body) <translate>the second attached body</translate> <br/> | ||
| Line 15: | Line 15: | ||
'''joint2''': (b2.Joint) <translate>the second revolute/prismatic joint attached to the gear joint</translate> <br/> | '''joint2''': (b2.Joint) <translate>the second revolute/prismatic joint attached to the gear joint</translate> <br/> | ||
'''ratio''': (number, default = 1) <translate>the gear ratio</translate> <br/> | '''ratio''': (number, default = 1) <translate>the gear ratio</translate> <br/> | ||
| − | === Return values === | + | === <translate>Return values</translate> === |
| − | '''Returns''' (table) <translate>A new gear joint definition table</translate><br/> | + | '''<translate>Returns</translate>''' (table) <translate>A new gear joint definition table</translate><br/> |
| − | === Examples === | + | === <translate>Examples</translate> === |
'''Gear joint combining revolute and prismatic joints'''<br/> | '''Gear joint combining revolute and prismatic joints'''<br/> | ||
<source lang="lua">--create empty box2d body for joint | <source lang="lua">--create empty box2d body for joint | ||
Revision as of 07:29, 24 August 2018
Available since: Gideros 2011.6
Description
Creates and returns a gear joint definition table.
(Please refer to b2.World:createJoint function for more information about all the information needed to create a gear joint).
(table) = b2.createGearJointDef(bodyA,bodyB,joint1,joint2,ratio)
Parameters
bodyA: (b2.Body) the first attached body
bodyB: (b2.Body) the second attached body
joint1: (b2.Joint) the first revolute/prismatic joint attached to the gear joint
joint2: (b2.Joint) the second revolute/prismatic joint attached to the gear joint
ratio: (number, default = 1) the gear ratio
Return values
Returns (table) A new gear joint definition table
Examples
Gear joint combining revolute and prismatic joints
--create empty box2d body for joint
local ground = world:createBody({})
--create revolute joint
--note that ground should be passed as first parameter here
local jointDef = b2.createRevoluteJointDef(ground, body1, 300, 300)
local revoluteJoint = world:createJoint(jointDef)
--set motor
revoluteJoint:setMaxMotorTorque(1)
revoluteJoint:enableMotor(true)
--axisx, axisy values usually between 0 and 1
--note that ground should be passed as first parameter here
local jointDef = b2.createPrismaticJointDef(ground, body2, 350, 100, 0.3, 1)
local prismaticJoint = world:createJoint(jointDef)
--set motor
prismaticJoint:setMaxMotorForce(1)
prismaticJoint:enableMotor(true)
--create gear joint using two already created joints
local jointDef = b2.createGearJointDef(body1, body2, revoluteJoint, prismaticJoint, 1)
local gearJoint = world:createJoint(jointDef)
