how to destroy CustomGearJoint

[bluegg]

Hi .everyone, I use newton physical engineer.
But now I can't find the method to destroy a CustomGearJoint.
I used new to build a joint:

OgreNewt::PrebuiltCustomJoints::CustomGearJoint* mgj=new OgreNewt::PrebuiltCustomJoints::CustomGearJoint(rel,(*itr)->getBody(),(*iitr)->getBody(),ParentPin,ChildPin);


But who can tell me how to destroy this CustomGearJoint? (Don't destroy the body)

[Julio Jerez]

if you have the pointer to the Joint,

delete mgj

[JernejL]

you are using ogre wrapper, im not familiar with it but i assume the joint class has some destroy function.

[bluegg]

Thanks Julio Jerez and Delfi.

I had done like that to delete the pointer: delete mgj
but it doesn't work.The two body still join with CustomGearJoint.

And I found the class method,Post here:

//! CustomGearJoint
/*!
This class works like 2 gears that mesh, retaining a specific ration between the rotational velocity of the bodies.
The gears don't have to rotate around the same axis, that is why 2 pins are supplied.
*/
class _OgreNewtExport CustomGearJoint : public OgreNewt::CustomJoint
{
public:
/*!
\param gearRatio float value representing the ratio of movement between parent and child.
\param parent pointer to OgreNewt::Body to be the parent body.
\param child pointer to the OgreNewt::Body to be the child body.
\param parentPin pin around which the parent's rotation should be tracked.
\param childPin pin around which the child's rotation should be tracked.
*/
CustomGearJoint( Ogre::Real gearRatio, const Body* parent, const Body* child, const Ogre::Vector3& parentPin, const Ogre::Vector3& childPin );
~CustomGearJoint() {}

//! overloaded function to submit the constraint.
void submitConstraint();

private:
Ogre::Real mGearRatio;

Ogre::Vector3 mLocalPos0, mLocalPos1;
Ogre::Quaternion mLocalOrient0, mLocalOrient1;
};

This is a Export class.
How can I delete the gear joint?

[Julio Jerez]

Code: Select all

   class _OgreNewtExport CustomGearJoint : public OgreNewt::CustomJoint
   {
   public:
      CustomGearJoint( Ogre::Real gearRatio, const Body* parent, const Body* child, const Ogre::Vector3& parentPin, const Ogre::Vector3& childPin );
      ~CustomGearJoint() {}
   };

The class has a destructor,. an dit is derivec from OgreNewt::CustomJoint

Can you showu ne the implemenation of OgreNewt::CustomJoint?
There sould be a function ehr to destroy the Joint.
I thonk it world be teh destrurtor of OgreNewt::CustomJoint
But it could be some oteh function.

[bluegg]

I found it derive from Joint:

class _OgreNewtExport CustomJoint : public Joint

And I found the ~joint() method running well.(I debug it with puting a break point there,and ~joint() is runing.)

So.I think the code : delete mgj is right.

But in my scene.The two gear still run like with Gearjoint.So strange.
I thinks something wrong else I missed.

[bluegg]

Ok.At last.I found my eyes made me a mistake.
In fact.It's done.As Julio Jerez said,just delete the pointer: delete mgj.

but because of inertia. my gear is running though I delete the Gearjoint pointer.

When I force it.It stoped.

Thanks Julio Jerez and Delfi.
I am sorry for my mistake.Hope teach others.