基于VTK的地下水数值模拟三维可视化开发应用

Three Dimensional Visualization Modeling of Groundwater Simulation Based on VTK

本文应用Kitware公司Visualization Toolkit(VTK),开发地下水数值模型可视化建模及数据处理的三维可视化方法。利用美国地质调查局三维地下水数值计算模型MODFLOW的数据,构建VTK类库定义的vtk Structrured Grid、vtk Unstructured Grid及vtk Poly Data数据集类型对象及VTK流水线。以河南省安阳市小南海泉域地下水可视化模拟系统开发为例,实现图像绘制、等水头线生成、筛选及剪切交互处理。

This paper presented a method of three-dimensional visualization of groundwater numeral simulation model, including the instruction of visualization model and data processing. By using the data computed by MODFLOW which was published by U.S. Geological Survey and the spatial data of the model, three types of objects including the datasets of vtkStructuredGrid, vtkUnstructuredGrid and vtkPolyData, and VTK pipeline were built. Taking the visualization system for the Xiaonanhai Spring Catchment as an example, the graphics were interacted in the way of contours producing, threshold filtering and clipping.