B2.DistanceJoint

From GiderosMobile

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Supported platforms: Platform android.pngPlatform ios.pngPlatform mac.pngPlatform pc.pngPlatform html5.pngPlatform winrt.pngPlatform win32.png
Available since: Gideros 2011.6
Inherits from: b2.Joint

Description


A distance joint constrains two points on two bodies to remain at a fixed distance from each other. You can view this as a massless, rigid rod.

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)

Methods

b2.DistanceJoint:getDampingRatio returns the damping ratio
b2.DistanceJoint:getFrequency returns the mass-spring-damper frequency in Hertz
b2.DistanceJoint:getLength returns the length of this distance joint in meters
b2.DistanceJoint:setDampingRatio sets the damping ratio (0 = no damping, 1 = critical damping)
b2.DistanceJoint:setFrequency sets the mass-spring-damper frequency in Hertz
b2.DistanceJoint:setLength sets the natural joint length in meters

Events

Constants