How to filter text-based entities included in nested block reference structures

[mozman]

This is the solution for #1078, which may also be useful for other users:

import ezdxf
from ezdxf import disassemble, bbox, query


def extents_without_text_entities(msp):
    # this explodes all INSERT entities (block references) recursively
    flat_entities = disassemble.recursive_decompose(msp)
    extents = bbox.extents(
        query.new(flat_entities, query="* !TEXT !MTEXT !ATTRIB"), fast=True
    )
    return extents


doc = ezdxf.readfile("your.dxf")
msp = doc.modelspace()
print(extents_without_text_entities(msp))

see also #914