Regular patch:distance bound (cont. Theorem 1 The distance between a regular CCSS patch s and the corresponding limit face F is bounded by (uv)-F(uv)M (u,v)eQ 4 The distance between a regular patch s and its corresponding mesh face F is bounded as [Cheng et al 2006] msSu-Fu明s兮MRegular patch: distance bound (cont.)  Theorem 1 The distance between a regular CCSS patch and the corresponding limit face is bounded by ◼ The distance between a regular patch and its corresponding mesh face is bounded as [Cheng et al 2006] S F ( , ) 1 max ( , ) ( , ) u v 4 u v u v M  S F−  S F ( , ) 1 max ( , ) ( , ) u v 3 u v u v M  S F− 