通过vtk重建三维物体，并显示切片并且改变视点-By vtk reconstructed objects and display slices and change viewpoint

利用vtk实现三维重建，并利用planeWidgetCut实现三维物体的切割-Use vtk achieve three-dimensional reconstruction, and the use of three-dimensional objects to achieve cutting planeWidgetCut

利用vtk实现三维物体的等值面绘制，并支持三维交互操作-Use vtk achieve isosurface rendering three-dimensional objects, and supports three-dimensional interaction