Difference between revisions of "B2.createPrismaticJointDef"
From GiderosMobile
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(table) = b2.createPrismaticJointDef(bodyA,bodyB,anchorx,anchory,axisx,axisy) | (table) = b2.createPrismaticJointDef(bodyA,bodyB,anchorx,anchory,axisx,axisy) | ||
</source> | </source> | ||
| − | '''bodyA''': (b2.Body) the first attached body | + | === Parameters === |
| − | '''bodyB''': (b2.Body) the second attached body | + | '''bodyA''': (b2.Body) the first attached body <br/> |
| − | '''anchorx''': (number) the x coordinate of the world anchor point | + | '''bodyB''': (b2.Body) the second attached body <br/> |
| − | '''anchory''': (number) the y coordinate of the world anchor point | + | '''anchorx''': (number) the x coordinate of the world anchor point <br/> |
| − | '''axisx''': (number) the x coordinate of the world axis | + | '''anchory''': (number) the y coordinate of the world anchor point <br/> |
| − | '''axisy''': (number) the y coordinate of the world axis | + | '''axisx''': (number) the x coordinate of the world axis <br/> |
| + | '''axisy''': (number) the y coordinate of the world axis <br/> | ||
| + | === Return values === | ||
'''Returns''' (table) A new prismatic joint definition table<br/> | '''Returns''' (table) A new prismatic joint definition table<br/> | ||
| + | === Examples === | ||
| + | '''Prismatic joint'''<br/> | ||
| + | <source lang="lua">--create empty box2d body for joint | ||
| + | local ground = world:createBody({}) | ||
| + | ground:setPosition(465, 480) | ||
| + | |||
| + | --axisx, axisy values usually between 0 and 1 | ||
| + | --0 0 moves freely | ||
| + | --0 1 moves on y axis | ||
| + | --1 0 moves on x axis | ||
| + | --1 1 moves on diagonal | ||
| + | local jointDef = b2.createPrismaticJointDef(body, ground, 350, 100, 0.3, 1) | ||
| + | local prismaticJoint = world:createJoint(jointDef)</source> | ||
Revision as of 10:44, 23 August 2018
Available since: Gideros 2011.6
Description
Creates and returns a prismatic joint definition table with the bodies, anchors, axis, and reference angle using the world anchor and world axis.
(Please refer to b2.World:createJoint function for more information about all the information needed to create a prismatic joint).
(table) = b2.createPrismaticJointDef(bodyA,bodyB,anchorx,anchory,axisx,axisy)
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
axisx: (number) the x coordinate of the world axis
axisy: (number) the y coordinate of the world axis
Return values
Returns (table) A new prismatic joint definition table
Examples
Prismatic joint
--create empty box2d body for joint
local ground = world:createBody({})
ground:setPosition(465, 480)
--axisx, axisy values usually between 0 and 1
--0 0 moves freely
--0 1 moves on y axis
--1 0 moves on x axis
--1 1 moves on diagonal
local jointDef = b2.createPrismaticJointDef(body, ground, 350, 100, 0.3, 1)
local prismaticJoint = world:createJoint(jointDef)
