Reconstruct

//-------------------------------------------------------------------------------------
    void Camera::Reconstruct()
    {
        Vector3D up, position, lookAt;
        float yaw, pitch, roll;
        Matrix rotationMatrix;

        // Setup the vector that points upwards.
        up.x = 0.0f;
        up.y = 1.0f;
        up.z = 0.0f;

        // Setup the position of the camera in the world.
        position = mPosition;

        // Setup where the camera is looking by default.
        lookAt.x = 0.0f;
        lookAt.y = 0.0f;
        lookAt.z = 0.0f;

        // Set the yaw (Y axis), pitch (X axis), and roll (Z axis) rotations in radians.
        pitch = mRotation.x * 0.0174532925f;
        yaw = mRotation.y * 0.0174532925f;
        roll = mRotation.z * 0.0174532925f;

        // Create the rotation matrix from the yaw, pitch, and roll values.
        D3DXMatrixRotationYawPitchRoll(&rotationMatrix, yaw, pitch, roll);

        // Transform the lookAt and up vector by the rotation matrix so the view is correctly rotated at the origin.
        D3DXVec3TransformCoord(&lookAt, &lookAt, &rotationMatrix);
        D3DXVec3TransformCoord(&up, &up, &rotationMatrix);

        // Translate the rotated camera position to the location of the viewer.
        lookAt = position + lookAt;

        // Finally create the view matrix from the three updated vectors.
        D3DXMatrixLookAtLH(&mViewMatrix, &position, &lookAt, &up);

        return;
    }