B2.DistanceJoint:setDampingRatio

Available since: Gideros 2011.6
Class: b2.DistanceJoint

Description

Sets the damping ratio of this distance joint. 0 = no damping, 1 = critical damping.

b2.DistanceJoint:setDampingRatio(ratio)

For a rigid distance joint you would set the frequency equals to 0 and the damping equals to 1.

Parameters

ratio: (number) the damping ratio (usually between 0 and 1)

Example

This is some code from an actual game ;-)

self.body.ground = self.world:createBody({})
if g_currentlevel == 2 then
	self.body.ground:setPosition(xposx, xposy)
	local jointDef = b2.createDistanceJointDef(self.body.ground, self.body, xposx + 0, xposy - 64, xposx, xposy)
	self.body.joint = self.world:createJoint(jointDef)
	self.body.joint:setDampingRatio(0.5)
	self.body.joint:setFrequency(1.2)
end




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