Difference between revisions of "B2.PulleyJoint"
| Line 19: | Line 19: | ||
local pulleyJoint = world:createJoint(jointDef)</source> | local pulleyJoint = world:createJoint(jointDef)</source> | ||
{|- | {|- | ||
| − | | style="width: 50%;"| | + | | style="width: 50%; vertical-align:top;"| |
=== Methods === | === Methods === | ||
| − | [[b2.PulleyJoint:getGroundAnchorA]] | + | [[b2.PulleyJoint:getGroundAnchorA]] ''<translate>returns the x and y coordinates of the first ground anchor</translate>''<br/> |
| − | [[b2.PulleyJoint:getGroundAnchorB]] | + | [[b2.PulleyJoint:getGroundAnchorB]] ''<translate>returns the x and y coordinates of the second ground anchor</translate>''<br/> |
| − | [[b2.PulleyJoint:getLengthA]] | + | [[b2.PulleyJoint:getLengthA]] ''<translate>returns the current length of the segment attached to bodyA</translate>''<br/> |
| − | [[b2.PulleyJoint:getLengthB]] | + | [[b2.PulleyJoint:getLengthB]] ''<translate>returns the current length of the segment attached to bodyB</translate>''<br/> |
| − | [[b2.PulleyJoint:getRatio]] | + | [[b2.PulleyJoint:getRatio]] ''<translate>returns the joint ratio</translate>''<br/> |
| − | | style="width: 50%;"| | + | | style="width: 50%; vertical-align:top;"| |
=== Events === | === Events === | ||
=== Constants === | === Constants === | ||
|} | |} | ||
Revision as of 14:30, 23 August 2018
Supported platforms: android, ios, mac, pc
Available since: Gideros 2011.6
Description
The pulley joint is connected to two bodies and two fixed ground points. The pulley supports a ratio such that: length1 ratio * length2 <= constant Yes, the force transmitted is scaled by the ratio. The pulley also enforces a maximum length limit on both sides. This is useful to prevent one side of the pulley hitting the top.
Examples
Pulley joint
--create empty box2d body for joint
local ground = world:createBody({})
local jointDef = b2.createPulleyJointDef(body1, body2,
200, 100, --coordinates where "imaginary string" is attached in the air for body 1
350, 100, --coordinates where "imaginary string" is attached in the air for body 2
200, 300, --coordinates where "imaginary string" is attached to the body 1
350, 300, --coordinates where "imaginary string" is attached in the body 2
1) -- ratio (if < 1 -> makes body 2 heavier, > 1 makes body 1 heavier, =1 makes them equal
local pulleyJoint = world:createJoint(jointDef)
Methodsb2.PulleyJoint:getGroundAnchorA returns the x and y coordinates of the first ground anchor |
EventsConstants |
