python-mvdxml

A mvdXML checker and w3c SPARQL converter, as an IfcOpenShell submodule or stand-alone.

WARNING: While this repository has many useful building blocks to build software around mvdXML and IFC, there are many mvdXML dialects and not all variants are likely to be fully supported.

Quickstart

Extraction

import ifcopenshell
from ifcopenshell.mvd import mvd

mvd_concept = mvd.open_mvd("examples/wall_extraction.mvdxml")
file = ifcopenshell.open("Duplex_A_20110505.ifc")

all_data = mvd.get_data(mvd_concept, file, spreadsheet_export=True)

non_respecting_entities = mvd.get_non_respecting_entities(file, all_data[1])
respecting_entities = mvd.get_respecting_entities(file, all_data[1])

# Create a new file
new_file = ifcopenshell.file(schema=file.schema)
proj = file.by_type("IfcProject")[0]
new_file.add(proj)

for e in respecting_entities:
    new_file.add(e)

new_file.write("new_file.ifc")

# Visualize results
mvd.visualize(file, non_respecting_entities)

Validation

import ifcopenshell

from ifcopenshell.mvd import mvd
from colorama import Fore
from colorama import Style

concept_roots = list(ifcopenshell.mvd.concept_root.parse(MVDXML_FILENAME))
file = ifcopenshell.open(IFC_FILENAME)

tt = 0 # total number of tests
ts = 0 # total number of successful tests

for concept_root in concept_roots:
    print("ConceptRoot: ", concept_root.entity)
    for concept in concept_root.concepts():
        tt = tt + 1
        print("Concept: ", concept.name)
        try:

            if len(concept.template().rules) > 1:
                attribute_rules = []
                for rule in concept.template().rules:
                    attribute_rules.append(rule)
                rules_root = ifcopenshell.mvd.rule("EntityRule", concept_root.entity, attribute_rules)
            else:
                rules_root = concept.template().rules[0]
            ts = ts + 1
            finst = 0 #failed instances

            for inst in file.by_type(concept_root.entity):
                try:
                    data = mvd.extract_data(rules_root, inst)
                    valid, output = mvd.validate_data(concept, data)
                    if not valid:
                        finst = finst + 1
                    print("[VALID]" if valid else Fore.RED +"[failure]"+Style.RESET_ALL, inst)
                    print(output)
                except Exception as e:
                    print(Fore.RED+"EXCEPTION: ", e, Style.RESET_ALL,inst)
                    print ()
            print (int(finst), "out of", int(len(file.by_type(concept_root.entity))), "instances failed the check")
            print ("---------------------------------")
        except Exception as e:
            print("EXCEPTION: "+Fore.RED,e,Style.RESET_ALL)
            print("---------------------------------")
    print("---------------------------------")
print("---------------------------------")

tf = tt-ts # total number of failed tests

print ("\nRESULTS OVERVIEW")
print ("Total number of tests: ",tt)
print ("Total number of executed tests: ", ts)
print ("Total number of failed tests: ", tf)