Difference between revisions of "B2.PulleyJoint"
From GiderosMobile
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__NOTOC__ | __NOTOC__ | ||
| + | <!-- GIDEROSOBJ:b2.PulleyJoint --> | ||
'''<translate>Supported platforms</translate>:''' [[File:Platform android.png]][[File:Platform ios.png]][[File:Platform mac.png]][[File:Platform pc.png]]<br/> | '''<translate>Supported platforms</translate>:''' [[File:Platform android.png]][[File:Platform ios.png]][[File:Platform mac.png]][[File:Platform pc.png]]<br/> | ||
'''<translate>Available since</translate>:''' Gideros 2011.6<br/> | '''<translate>Available since</translate>:''' Gideros 2011.6<br/> | ||
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| style="width: 50%; vertical-align:top;"| | | style="width: 50%; vertical-align:top;"| | ||
=== <translate>Methods</translate> === | === <translate>Methods</translate> === | ||
| − | [[Special:MyLanguage/b2.PulleyJoint:getGroundAnchorA|b2.PulleyJoint:getGroundAnchorA]] ''<translate>returns the x and y coordinates of the first ground anchor</translate>''<br/> | + | [[Special:MyLanguage/b2.PulleyJoint:getGroundAnchorA|b2.PulleyJoint:getGroundAnchorA]] ''<translate>returns the x and y coordinates of the first ground anchor</translate>''<br/><!-- GIDEROSMTD:b2.PulleyJoint:getGroundAnchorA --> |
| − | [[Special:MyLanguage/b2.PulleyJoint:getGroundAnchorB|b2.PulleyJoint:getGroundAnchorB]] ''<translate>returns the x and y coordinates of the second ground anchor</translate>''<br/> | + | [[Special:MyLanguage/b2.PulleyJoint:getGroundAnchorB|b2.PulleyJoint:getGroundAnchorB]] ''<translate>returns the x and y coordinates of the second ground anchor</translate>''<br/><!-- GIDEROSMTD:b2.PulleyJoint:getGroundAnchorB --> |
| − | [[Special:MyLanguage/b2.PulleyJoint:getLengthA|b2.PulleyJoint:getLengthA]] ''<translate>returns the current length of the segment attached to bodyA</translate>''<br/> | + | [[Special:MyLanguage/b2.PulleyJoint:getLengthA|b2.PulleyJoint:getLengthA]] ''<translate>returns the current length of the segment attached to bodyA</translate>''<br/><!-- GIDEROSMTD:b2.PulleyJoint:getLengthA --> |
| − | [[Special:MyLanguage/b2.PulleyJoint:getLengthB|b2.PulleyJoint:getLengthB]] ''<translate>returns the current length of the segment attached to bodyB</translate>''<br/> | + | [[Special:MyLanguage/b2.PulleyJoint:getLengthB|b2.PulleyJoint:getLengthB]] ''<translate>returns the current length of the segment attached to bodyB</translate>''<br/><!-- GIDEROSMTD:b2.PulleyJoint:getLengthB --> |
| − | [[Special:MyLanguage/b2.PulleyJoint:getRatio|b2.PulleyJoint:getRatio]] ''<translate>returns the joint ratio</translate>''<br/> | + | [[Special:MyLanguage/b2.PulleyJoint:getRatio|b2.PulleyJoint:getRatio]] ''<translate>returns the joint ratio</translate>''<br/><!-- GIDEROSMTD:b2.PulleyJoint:getRatio --> |
| style="width: 50%; vertical-align:top;"| | | style="width: 50%; vertical-align:top;"| | ||
=== <translate>Events</translate> === | === <translate>Events</translate> === | ||
=== <translate>Constants</translate> === | === <translate>Constants</translate> === | ||
|} | |} | ||
Revision as of 15:55, 31 August 2018
Supported platforms: 
Available since: Gideros 2011.6
Inherits from: b2.Joint
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 |
