First Commit

2026-05-31 10:17:09 +07:00
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+## 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
+
+```python
+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])
+
+
+```
+
+```python
+# 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")
+```
+
+```python
+# Visualize results
+mvd.visualize(file, non_respecting_entities)
+```
+
+##### Validation
+
+~~~py
+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)
+~~~