Method Update

GTE/Samples/Physics/KeplerPolarForm/PhysicsModule.cpp:89–108

}

void PhysicsModule::Update()
{
    if (mSolver)
    {
        // Apply a single step of the ODE solver.
        mSolver->Update(mTime, mState[0], mTime, mState[0]);

        // Compute dot(theta) for application access.
        float sn = std::sin(mState[0]);
        float cs = std::cos(mState[0]);
        float v = mAux[0] * sn + mAux[1] * cs - mAux[2];
        mState[1] = mAux[3] * v * v;

        // Compute radius for application access.
        mState[2] = mEccentricity * mRho / (1.0f + mEccentricity * cs);

        // Compute dot(radius) for application access.
        mState[3] = mState[2] * mState[2] * mState[1] * sn / mRho;
    }
}