Grasshopper GHPython error when called from RhinoComputeJS

Rhino Developer compute.rhino3d
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1

My own implementation of the grasshopper GHPython plugin gives me an error when I call it from RhinoCompute, but it works fine when I open it directly from grasshopper.
I just want to implement a function to merge an open mesh into a closed mesh, here is the code.

#coding=utf-8
"""
close opening mesh
    Inputs:
        mesh: opening mesh
    Output:
        mesh_out: closed mesh
"""
from ghpythonlib.componentbase import executingcomponent as component
import Grasshopper, GhPython
import System
import Rhino
import rhinoscriptsyntax as rs

class MyComponent(component):

    def RunScript(self, mesh):
        print(mesh)
        meshobj = rs.coercemesh(mesh)
        if not meshobj:
            mesh_out = None
        else:
            mcopy = meshobj.DuplicateMesh()
            distance = 0.1
            rachet = True
            rc = mcopy.MatchEdges(distance, rachet)
            if rc:
                rs.Redraw()
                mesh_out = mcopy
            else:
                mesh_out = None
        return mesh_out

It works fine in grasshopper!

image
image1920×1175 139 KB

Calling it with RhinoCompute gives an error and does not return the mesh.
warning: Parameter failed to collect data: component "closeMeshC" (d925838e-124f-46b6-9ce4-8bfaef877258)

image
image1691×511 61.1 KB

What’s the problem? What should I do?

Thanks.

2

The most important thing about this plugin is the call to the matchEdges() method.
I’m guessing it might have something to do with headless, but I don’t know how to fix it.