Figure 3: Offsets are applied to the Object world before the perspective transform is applied

m_ScnObjCoords[0] = m_ObjPtX + m_ScOffpPosnX;
m_ScnObjCoords[1] = m_ObjPtY + m_ScOffpPosnY;
m_ScnObjCoords[2] = m_ObjPtZ + m_ScOffpPosnZ;
m_ScnObjCoords[3] = 1.0;