示例#1
0
      const matn<T,3>&	    get_inverse_mat3()	const
                            { if( !m_inv_cache.is_valid() )
						        m_inv_cache = m_quat.conjugated().rot_matrix(); 
						      return m_inv_cache; 
    					    }
示例#2
0
      const matn<T,3>&	    get_mat3()	const	
                            { if( !m_cache.is_valid() )
						        m_cache = m_quat.rot_matrix(); 
						      return m_cache; 
        					}