65 lines
2 KiB
Python
65 lines
2 KiB
Python
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"""Parse a ``patterns.config`` programme into per-code space requirements.
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Only the ``spaces:`` section is read here. Generic codes (c/o/s) carry no
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explicit targets and are left unconstrained by the solver (they absorb slack).
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"""
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from __future__ import annotations
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from dataclasses import dataclass, field
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import yaml
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# Urb::Dom::Fitness defaults for optional params (ProgrammeDriven.default_params).
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_DEFAULT_WIDTH = (4.0, 1.0)
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_DEFAULT_PROPORTION = (1.5, 0.5)
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@dataclass
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class SpaceReq:
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code: str
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name: str = ""
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size: float = 0.0 # target floor area, m^2
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size_sigma: float = 1.0
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width: float = _DEFAULT_WIDTH[0]
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width_sigma: float = _DEFAULT_WIDTH[1]
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proportion: float = _DEFAULT_PROPORTION[0] # max length/width ratio
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proportion_sigma: float = _DEFAULT_PROPORTION[1]
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adjacency: list[str] = field(default_factory=list)
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level: int | None = None
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requires_below: str | None = None
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count: int = 1
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def _pair(d: dict, key: str, default: tuple[float, float]) -> tuple[float, float]:
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v = d.get(key)
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if v is None:
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return default
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return float(v[0]), float(v[1])
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def load_programme(path: str) -> dict[str, SpaceReq]:
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with open(path) as fh:
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conf = yaml.safe_load(fh)
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spaces = conf.get("spaces") or {}
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out: dict[str, SpaceReq] = {}
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for code, c in spaces.items():
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size = _pair(c, "size", (0.0, 1.0))
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width = _pair(c, "width", _DEFAULT_WIDTH)
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prop = _pair(c, "proportion", _DEFAULT_PROPORTION)
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out[code] = SpaceReq(
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code=code,
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name=c.get("name", ""),
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size=size[0],
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size_sigma=size[1],
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width=width[0],
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width_sigma=width[1],
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proportion=prop[0],
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proportion_sigma=prop[1],
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adjacency=list(c.get("adjacency") or []),
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level=c.get("level"),
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requires_below=c.get("requires_below"),
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count=int(c.get("count") or 1),
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)
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return out
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