_get_compressed_triangulation(self)
Returns minimal-length triangles array (compressed_triangles) and coordinates arrays (compressed_x, compressed_y) that can still describe the unmasked triangles of the encapsulated triangulation.
the returned compressed triangulation triangles
the returned compressed triangulation 1st coordinate
the returned compressed triangulation 2nd coordinate
renumbering table to translate the triangle numbers from the encapsulated triangulation into the new (compressed) renumbering. -1 for masked triangles (deleted from compressed_triangles).
renumbering table to translate the point numbers from the encapsulated triangulation into the new (compressed) renumbering. -1 for unused points (i.e. those deleted from compressed_x and compressed_y).
Compress (if masked) the encapsulated triangulation.
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