Object move strangely

[izissise]

Hello,
When my bodies hit another they bounce and move strangely see at yourself :

http://www.upndl.com/f/b4b0cb6525f9923fee056ceddffc8310 (just press two time "Télécharger le fichier" ....)

So I don't know what causing this problem because body have default material ....

[ledahut]

Look like you did not set correctly inertial mass matrix with NewtonBodySetMassMatrix.
Here some formula http://www.sciences-indus-cpge.apinc.or ... es-solides for primitive.

Or simply use the function NewtonConvexCollisionCalculateInertialMatrix

[izissise]

Ok thank you I will see that !

[izissise]

So, that don't work
I implanted it like that :

Code: Select all


    float inerti[3];
    float centre[3];

    NewtonCollision * nCollision = NULL;

    nCollision = NewtonCreateBox (m_nWorld, v_taille.x, v_taille.y, v_taille.z, NULL,NULL);

    NewtonBodySetCollision(m_pBody, nCollision);

    NewtonBodyGetCentreOfMass(m_pBody,centre);

    NewtonConvexCollisionCalculateInertialMatrix(nCollision,inerti,centre);

    NewtonReleaseCollision (m_nWorld, nCollision);


NewtonBodySetMassMatrix (m_pBody, fMasse, inertie[0],inertie[1],inertie[2]);



[PJani]

So, that don't work
I implanted it like that :

Code: Select all


    float inerti[3];
    float centre[3];

    NewtonCollision * nCollision = NULL;

    nCollision = NewtonCreateBox (m_nWorld, v_taille.x, v_taille.y, v_taille.z, NULL,NULL);

    NewtonBodySetCollision(m_pBody, nCollision);

    NewtonBodyGetCentreOfMass(m_pBody,centre);

    NewtonConvexCollisionCalculateInertialMatrix(nCollision,inerti,centre);

    NewtonReleaseCollision (m_nWorld, nCollision);


NewtonBodySetMassMatrix (m_pBody, fMasse, inertie[0],inertie[1],inertie[2]);





This should correct your problems.

Code: Select all

NewtonBodySetMassMatrix (m_pBody, fMasse, inertie[0]*fMasse,inertie[1]*fMasse,inertie[2]*fMasse); //This should work


[izissise]

Yeah , Thank you it work !!

But I have another problem when I change an body mass to 0 other body can pass trough ....