Distance (error) 89 Each surface patch S corresponds to a limit triangle F in its limit mesh F is formed by connecting the three corners of S Distance (error)between a patchs and the limit mesh is defined as maS0）-F,w S(v,w):Stam's parameterization of S F(v,w):linear parameterization ofF ■2：the unit triangle 2={(y,w)p∈[0,1，o∈[0,1- Distance (error) Each surface patch corresponds to a limit triangle in its limit mesh „ is formed by connecting the three corners of Distance (error) between a patch and the limit mesh is defined as „ : Stam’s parameterization of „ : linear parameterization of „ : the unit triangle S(, ) v w Ω Ω = ∈ ω∈ − {( , ) [0,1], [0,1 ] vw v v } F(, ) v w S F (, ) max ( , ) ( , ) v w vw vw ∈Ω S F− S F F S S S _ F