numpy-stl

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Hi, I want to know if there is an easy way to delete specific triangles from a mesh from an STL file. I can delete the vertices of the triangles that I want to reject, but then I cannot visualize the new result ... any ideas? Thanks a lot

Since numpy arrays have a fixed size, the only way you can delete them is by creating a new array (or a view).

One option would be to create a view, simply put, you can slice a numpy array by passing a list of selected indices:

>>> import numpy
>>> a = numpy.arange(10, 19).reshape((3, 3))
>>> a
array([[10, 11, 12],
       [13, 14, 15],
       [16, 17, 18]])
>>> a[[1, 2]]
array([[13, 14, 15],
       [16, 17, 18]])

If you create a new Mesh object with the sliced data argument you can easily delete triangles like that.

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