摘要
The dynamic updating of the model included: the change of space border,addi- tion and reduction of spatial component (disappearing,dividing and merging),the change of the topological relationship and synchronous dynamic updating of database.Firstly, arming at the deficiency of OO-Solid model in the aspect of dynamic updating,modeling primitives of OO-Solid model were modified.And then the algorithms of dynamic updating of 3D geological model with the node data,line data or surface data change were dis- cussed.The core algorithms was done by establishing space index,following the way of facing the object from bottom to top,namely the dynamic updating from the node to arc, and then to polygon,then to the face of the component and finally to the geological object. The research has important theoretical and practical values in the field of three dimen- sional geological modeling and is significant in the field of mineral resources.
The dynamic updating of the model included： the change of space border, addition and reduction of spatial component （disappearing, dividing and merging）, the change of the topological relationship and synchronous dynamic updating of database. Firstly, arming at the deficiency of OO-Solid model in the aspect of dynamic updating, modeling primitives of OO-Solid model were modified. And then the algorithms of dynamic updating of 3D geological model with the node data, line data or surface data change were discussed. The core algorithms was done by establishing space index, following the way of facing the object from bottom to top, namely the dynamic updating from the node to arc, and then to polygon, then to the face of the component and finally to the geological object. The research has important theoretical and practical values in the field of three dimensional geological modeling and is significant in the field of mineral resources.
基金
the National Natural Science Foundation of China(40572165)
