How can I import a structure from STL files?

Date	Category
2023-12-06 21:10:36	Structures

To use the STL import functionality, you must install Tidy3D as pip install "tidy3d[trimesh]", which will install optional dependencies for processing surface meshes. Then you can use the tidy3d.TriangleMesh.from_stl() function. In the following example, we will import a simple box geometry from a STL file.

# Make the geometry object representing the STL solid from the STL file stored on disk
box = tidy3d.TriangleMesh.from_stl(
    filename="./misc/box.stl",
    scale=1,  # The units are already microns as desired, but this parameter can be used to change units [default: 1].
    origin=(
        0,
        0,
        0,
    ),  # This can be used to set a custom origin for the stl solid [default: (0, 0, 0)]
    solid_index=None,  # Sometimes, there may be more than one solid in the file; use this to select a specific one by index.
)

See this example for a complete reference on importing STL files.