找到 2 个网格之间的交线

Question

I am looking to find an intersection line(segments) between 2 meshes in python I tried this:

import pyvista as pv
import vtk

def get_mesh_intersection(mesh1, mesh2):
    '''
    Find the intersection volume between mesh vtk objects
    and return the volume of intersection
    '''
    alg = vtk.vtkBooleanOperationPolyDataFilter()
    alg.SetInputData(0, mesh2)
    alg.SetInputData(1, mesh1)
    alg.SetOperationToIntersection()
    alg.Update()
    intersection = pv.wrap(alg.GetOutput())
    return intersection

intersection = get_mesh_intersection(grid1, grid2)

Can I extract from the intersection the line? how? I see that I can get intersection.volume intersection.area intersection.points Is intersection.points is what I am looking for?

Answer 1

I think you should use vtkIntersectionPolyDataFilter instead of the boolean operation filter.