NLSA
47 lines
1.4 KiB
Python
47 lines
1.4 KiB
Python
# =============================================================================
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# helpers.py
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# Shared utilities used across the exporter modules.
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# =============================================================================
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def _get(obj, key, default=None):
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"""
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Safe access for specklepy Base objects, dicts, or any hybrid.
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Tries attribute access first, then bracket access.
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"""
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if obj is None:
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return default
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if isinstance(obj, dict):
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return obj.get(key, default)
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try:
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val = getattr(obj, key, None)
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if val is not None:
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return val
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except Exception:
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pass
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try:
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val = obj[key]
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if val is not None:
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return val
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except Exception:
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pass
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return default
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# Scale factors → MILLIMETRES (IFC file is declared as mm)
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MM_SCALES = {
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"mm": 1.0, "millimeter": 1.0, "millimeters": 1.0,
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"cm": 10.0, "centimeter": 10.0, "centimeters": 10.0,
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"m": 1000.0, "meter": 1000.0, "meters": 1000.0,
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"ft": 304.8, "foot": 304.8, "feet": 304.8,
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"in": 25.4, "inch": 25.4, "inches": 25.4,
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}
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def resolve_scale(obj, fallback: float) -> float:
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"""Resolve unit scale: obj.units → fallback."""
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units = _get(obj, "units")
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if units and isinstance(units, str):
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return MM_SCALES.get(units.lower().strip(), fallback)
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return fallback
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