Difference between revisions of "B2.createDistanceJointDef"
From GiderosMobile
| Line 9: | Line 9: | ||
(table) = b2.createDistanceJointDef(bodyA,bodyB,anchorAx,anchorAy,anchorBx,anchorBy) | (table) = b2.createDistanceJointDef(bodyA,bodyB,anchorAx,anchorAy,anchorBx,anchorBy) | ||
</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/> |
| − | '''anchorAx''': (number) the x coordinate of the world anchor point of bodyA | + | '''bodyB''': (b2.Body) the second attached body <br/> |
| − | '''anchorAy''': (number) the y coordinate of the world anchor point of bodyA | + | '''anchorAx''': (number) the x coordinate of the world anchor point of bodyA <br/> |
| − | '''anchorBx''': (number) the x coordinate of the world anchor point of bodyB | + | '''anchorAy''': (number) the y coordinate of the world anchor point of bodyA <br/> |
| − | '''anchorBy''': (number) the y coordinate of the world anchor point of bodyB | + | '''anchorBx''': (number) the x coordinate of the world anchor point of bodyB <br/> |
| + | '''anchorBy''': (number) the y coordinate of the world anchor point of bodyB <br/> | ||
| + | === Return values === | ||
'''Returns''' (table) A new distance joint definition table<br/> | '''Returns''' (table) A new distance joint definition table<br/> | ||
| + | === Examples === | ||
| + | '''Distance joint'''<br/> | ||
| + | <source lang="lua">local jointDef = b2.createDistanceJointDef(body1, body2, 100, 100, 200, 100) | ||
| + | local distanceJoint = world:createJoint(jointDef) | ||
| + | --by default length between two bodies is the length they have between them when joint was created | ||
| + | --but it is possilbe to change it using | ||
| + | distanceJoint:setLength(200) | ||
| + | distanceJoint:setDampingRatio(0.5) | ||
| + | distanceJoint:setFrequency(4)</source> | ||
Revision as of 11:40, 23 August 2018
Available since: Gideros 2011.6
Description
Creates and returns a distance joint definition table with the bodies, anchors, and length using the world anchors.
(Please refer to b2.World:createJoint function for more information about all the information needed to create a distance joint).
(table) = b2.createDistanceJointDef(bodyA,bodyB,anchorAx,anchorAy,anchorBx,anchorBy)
Parameters
bodyA: (b2.Body) the first attached body
bodyB: (b2.Body) the second attached body
anchorAx: (number) the x coordinate of the world anchor point of bodyA
anchorAy: (number) the y coordinate of the world anchor point of bodyA
anchorBx: (number) the x coordinate of the world anchor point of bodyB
anchorBy: (number) the y coordinate of the world anchor point of bodyB
Return values
Returns (table) A new distance joint definition table
Examples
Distance joint
local jointDef = b2.createDistanceJointDef(body1, body2, 100, 100, 200, 100)
local distanceJoint = world:createJoint(jointDef)
--by default length between two bodies is the length they have between them when joint was created
--but it is possilbe to change it using
distanceJoint:setLength(200)
distanceJoint:setDampingRatio(0.5)
distanceJoint:setFrequency(4)
