( ) is a important industrial art extensively use in many applications, including automotive, shipbuilding, and aerospace industries, industral and architectural design, prosthetics, and many more. ( ) is also widely used to produce computer anumation for special effect in movies, advertising and technical manuals. The modern ubiquity and power of computers means thateven perfume bottle and shampoo dispenser are designed using technuques unheard of by engineers of the 1960s. Because of its enormous economic computational geometry. computer graphics(both hardware and software), and discrete differential geometry.