Hi, some questions of joint motors

devachan

23-12-2006 17:52:15

Hi. I am playing with the tutorials of NxOgre (0.4RC2) and Physx. at the moment in the Lesson205 of physx. I have some questions of concepts and other practices.

1° I use the same values for velTarget, maxForce, freeSpin, MaxAngularVelocity ... , that in Lesson205. My motor works well at low speeds (10), but loses its anchor at high speeds (1000). Some idea on this?

2° I do not know clearly the difference between MaxAngularVelocity and velTarget. Veltarget can be greater than MaxAngularVelocity. I think that the imporante is the value of VelTarget. That roll plays MaxAngularVelocity?

3° I have read of tutorial of cars, but I believe that he is not in the NxOgre tutorials 0.4RC2

my code



void start(){



	mWorld = new world(mRoot);

	mScene = mWorld->createScene("Myescena",mSceneMgr);

	mScene->hasGravity();

	mScene->hasFloor();



	mBodySup = mScene->createBody("BodySuperior","Cube.1m-2m-1m.mesh",new CubeShape(Vector3(1,2,1)),10.0f,Vector3(0,5,0));

	mBodySup->setKinematic(true);



	mBodyInf = mScene->createBody("BodyInferior","Cube.1m-2m-1m.mesh",new cubeShape(Vector3(1,2,1)),10.0f,Vector3(0,3,0));



	mBodyInf->setIgnoreGravity(true);

	mBodyInf->mActor->setMaxAngularVelocity(700);

	mBodyInf->setAngularDamping(0);



	mMotor = mScene->createMotorisedJoint(mBodySup,mBodyInf,Vector3(0.5,4,0),Vector3(0,0,-1));

	mMotor->setFreeSpin(true);



}



void newFrame(float _time){



	if (mInputDevice->isKeyDown(KC_P))

		mMotor->setVelocityTarget(1000);



	if (mInputDevice->isKeyDown(KC_V))

	mMotor->setVelocityTarget(10);

}

exists some important difference when creating a motor of the 2 following ways?



mMotor = mScene->createMotorisedJoint();

or

mScene->createJoint(new motorisedJoint());

thanks. happy year end