NLSA
314 lines
11 KiB
Python
314 lines
11 KiB
Python
# =============================================================================
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# properties.py
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# Generically clones all properties from a Speckle object into IFC entities.
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#
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# Source structure (from _properties / properties):
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# Attributes → IFC element attributes (GlobalId, Name, Tag, etc.)
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# Property Sets → dict of {pset_name: {prop_name: value}}
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# Quantities → dict of {qto_name: {qty_name: {name, units, value}}}
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# Building Storey → string, used for storey assignment
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# Element Type Attributes → used by type_manager to create IfcTypeObject
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# Element Type Property Sets → psets written on the IfcTypeObject
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# =============================================================================
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import ifcopenshell
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import ifcopenshell.api
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from specklepy.objects.base import Base
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from utils.helpers import _get
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# ---------------------------------------------------------------------------
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# Safe access helpers
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# ---------------------------------------------------------------------------
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def _to_dict(obj) -> dict:
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"""Convert a Speckle Base object or dict to a plain dict."""
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if obj is None:
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return {}
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if isinstance(obj, dict):
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return obj
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if hasattr(obj, "get_dynamic_member_names"):
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result = {}
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try:
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for n in obj.get_dynamic_member_names():
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try:
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result[n] = obj[n]
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except Exception:
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pass
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except Exception:
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pass
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return result
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if hasattr(obj, "items"):
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try:
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return dict(obj.items())
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except Exception:
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pass
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return {}
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# ---------------------------------------------------------------------------
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# Property extraction from Speckle object
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# ---------------------------------------------------------------------------
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def get_properties(obj) -> dict:
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"""Get the _properties / properties dict from a Speckle object."""
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for key in ["_properties", "properties", "@properties"]:
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val = _get(obj, key)
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if val is not None:
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return _to_dict(val)
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return {}
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def get_building_storey(obj) -> str:
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"""Extract Building Storey name from properties."""
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props = get_properties(obj)
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storey = props.get("Building Storey")
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if storey and isinstance(storey, str):
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return storey.strip()
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return "Unknown Storey"
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def get_attributes(obj) -> dict:
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"""Get Attributes dict from properties."""
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props = get_properties(obj)
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return _to_dict(props.get("Attributes")) or {}
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def get_element_name(obj) -> str:
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"""Get element name from Attributes, falling back to object name."""
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attrs = get_attributes(obj)
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name = attrs.get("Name")
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if name:
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return str(name)
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# Fallback to object-level name fields
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for key in ["name", "_name"]:
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val = _get(obj, key)
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if val and isinstance(val, str):
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return val
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return "unnamed"
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# ---------------------------------------------------------------------------
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# IFC value creation
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# ---------------------------------------------------------------------------
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def _make_ifc_value(ifc, value):
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"""Create an IFC nominal value entity from a Python value, detecting type."""
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if isinstance(value, bool):
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return ifc.create_entity("IfcBoolean", wrappedValue=value)
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if isinstance(value, int):
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return ifc.create_entity("IfcInteger", wrappedValue=value)
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if isinstance(value, float):
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return ifc.create_entity("IfcReal", wrappedValue=value)
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if isinstance(value, list):
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return ifc.create_entity("IfcLabel", wrappedValue=", ".join(str(v) for v in value))
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return ifc.create_entity("IfcLabel", wrappedValue=str(value))
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# ---------------------------------------------------------------------------
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# Unit → IFC quantity type mapping
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# ---------------------------------------------------------------------------
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_UNIT_QTY_MAP = {
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"millimetre": ("IfcQuantityLength", "LengthValue"),
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"millimeter": ("IfcQuantityLength", "LengthValue"),
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"centimetre": ("IfcQuantityLength", "LengthValue"),
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"centimeter": ("IfcQuantityLength", "LengthValue"),
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"metre": ("IfcQuantityLength", "LengthValue"),
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"meter": ("IfcQuantityLength", "LengthValue"),
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"foot": ("IfcQuantityLength", "LengthValue"),
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"feet": ("IfcQuantityLength", "LengthValue"),
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"inch": ("IfcQuantityLength", "LengthValue"),
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"square metre": ("IfcQuantityArea", "AreaValue"),
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"square meter": ("IfcQuantityArea", "AreaValue"),
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"square foot": ("IfcQuantityArea", "AreaValue"),
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"cubic metre": ("IfcQuantityVolume", "VolumeValue"),
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"cubic meter": ("IfcQuantityVolume", "VolumeValue"),
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"cubic foot": ("IfcQuantityVolume", "VolumeValue"),
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"kilogram": ("IfcQuantityWeight", "WeightValue"),
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"pound": ("IfcQuantityWeight", "WeightValue"),
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"degree": ("IfcQuantityCount", "CountValue"),
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}
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# Name keyword → IFC quantity type (used when no units are provided)
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_NAME_QTY_MAP = {
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"length": ("IfcQuantityLength", "LengthValue"),
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"width": ("IfcQuantityLength", "LengthValue"),
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"height": ("IfcQuantityLength", "LengthValue"),
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"depth": ("IfcQuantityLength", "LengthValue"),
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"perimeter": ("IfcQuantityLength", "LengthValue"),
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"area": ("IfcQuantityArea", "AreaValue"),
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"volume": ("IfcQuantityVolume", "VolumeValue"),
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"volumn": ("IfcQuantityVolume", "VolumeValue"), # common typo
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"weight": ("IfcQuantityWeight", "WeightValue"),
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"mass": ("IfcQuantityWeight", "WeightValue"),
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}
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# ---------------------------------------------------------------------------
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# Set IFC element attributes from _properties.Attributes
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# ---------------------------------------------------------------------------
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def set_element_attributes(ifc, element, obj):
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"""Set IFC element attributes from _properties.Attributes."""
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attrs = get_attributes(obj)
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if not attrs:
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return
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for ifc_attr in ["GlobalId", "Name", "Tag", "ObjectType", "Description"]:
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val = attrs.get(ifc_attr)
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if val is not None:
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try:
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setattr(element, ifc_attr, str(val))
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except Exception:
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pass
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# PredefinedType requires special handling (enum value)
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ptype = attrs.get("PredefinedType")
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if ptype:
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try:
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element.PredefinedType = str(ptype)
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except Exception:
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pass
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# ---------------------------------------------------------------------------
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# Write property sets from _properties.Property Sets
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# ---------------------------------------------------------------------------
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def write_property_sets(ifc, element, obj):
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"""Write all property sets from _properties.Property Sets."""
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props = get_properties(obj)
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properties_section = _to_dict(props.get("Property Sets"))
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if not properties_section:
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return
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for pset_name, pset_data in properties_section.items():
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pset_dict = _to_dict(pset_data) if not isinstance(pset_data, dict) else pset_data
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if not pset_dict:
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continue
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ifc_props = []
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for prop_name, prop_value in pset_dict.items():
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if prop_name == "id":
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continue
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if prop_value is None:
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continue
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try:
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nominal = _make_ifc_value(ifc, prop_value)
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p = ifc.create_entity(
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"IfcPropertySingleValue",
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Name=str(prop_name),
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NominalValue=nominal,
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)
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ifc_props.append(p)
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except Exception:
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continue
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if ifc_props:
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try:
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pset = ifcopenshell.api.run(
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"pset.add_pset", ifc, product=element, name=pset_name
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)
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pset.HasProperties = ifc_props
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except Exception as e:
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print(f" Warning: {pset_name}: {e}")
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# ---------------------------------------------------------------------------
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# Write quantity sets from _properties.Quantities
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# ---------------------------------------------------------------------------
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def _try_float(value):
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"""Try to convert a value to float. Returns None on failure."""
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if isinstance(value, (int, float)):
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return float(value)
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if isinstance(value, str):
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try:
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return float(value)
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except ValueError:
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return None
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return None
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def write_quantity_sets(ifc, element, obj):
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"""Write all quantity sets from _properties.Quantities."""
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props = get_properties(obj)
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quantities_raw = props.get("Quantities")
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if quantities_raw is None:
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return
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quantities_section = _to_dict(quantities_raw)
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if not quantities_section:
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return
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for qto_name, qto_data in quantities_section.items():
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qto_dict = _to_dict(qto_data) if not isinstance(qto_data, dict) else qto_data
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if not qto_dict:
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continue
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quantities = []
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for qty_key, qty_entry in qto_dict.items():
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if qty_key == "id":
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continue
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# Quantity entries can be:
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# - {name, units, value} dicts (ArchiCAD / IFC-native)
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# - plain numbers or numeric strings (Grasshopper)
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if isinstance(qty_entry, dict):
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name = qty_entry.get("name", qty_key)
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units = (qty_entry.get("units") or "").strip().lower()
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value = _try_float(qty_entry.get("value"))
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else:
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value = _try_float(qty_entry)
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if value is None:
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continue
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name = qty_key
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units = ""
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if value is None:
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continue
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try:
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mapping = _UNIT_QTY_MAP.get(units)
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if not mapping:
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# Infer quantity type from name keywords
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name_lower = name.lower()
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for keyword, m in _NAME_QTY_MAP.items():
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if keyword in name_lower:
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mapping = m
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break
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if mapping:
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qty_type, value_attr = mapping
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qty = ifc.create_entity(
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qty_type, Name=name, **{value_attr: value}
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)
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else:
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# CountValue requires int
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qty = ifc.create_entity(
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"IfcQuantityCount", Name=name, CountValue=int(value)
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)
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quantities.append(qty)
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except Exception as e:
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print(f" Warning: quantity {name}: {e}")
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continue
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if quantities:
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try:
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qto = ifcopenshell.api.run(
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"pset.add_qto", ifc, product=element, name=qto_name
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)
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qto.Quantities = quantities
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except Exception as e:
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print(f" Warning: {qto_name}: {e}")
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# ---------------------------------------------------------------------------
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# Public API — called from main.py
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# ---------------------------------------------------------------------------
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def write_all_properties(ifc, element, obj):
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"""Write all properties, quantities, and attributes from _properties."""
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set_element_attributes(ifc, element, obj)
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write_property_sets(ifc, element, obj)
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write_quantity_sets(ifc, element, obj)
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