Abstract:

An algorithm was proposed based on the mesh information of covering surface to fill the inner-hole on the covering surface automatically. The boundary loops including the outer-boundary loop and the inner-boundary loop were defined with the boundary edge information of the covering surface mesh. The outer-boundary and the inner-hole were distinguished by comparing the minimum bound rectangular size of the boundary loop on the covering surface. The boundary of inner-hole was divided into 4 approximately equal curves by discretizing the boundary loop. The bicubic Coons surface patch was generated around the inner-hole with the boundary information of the curves and the span-boundary tangent vector. An example shows that the proposed automatic hole filling algorithm can exactly identify the inner-hole and automatically generate the filling surface patch.

Key words: materials synthesis and processing technology, surface, filling hole, Coons surface