One implementation method of geological surfaces' 3D interaction editing

In order to improve the accuracy and rationality of geological modeling, improving the function of plan and section 3D interaction editing in 3D geological modeling software, an edge exchange algorithm is proposed in this paper, and coded and verified on TIN surface in the software Geologist 3D Assistant (G3DA). The results show:the edge exchange algorithm can edit the 2D TIN, 3D TIN, and the corresponding contour plan and section at the same time, and update topological relationship of the 2D/3D TIN automatically.