Bruno Postle
0366392da4
Clean-room Python successor to Urb for programme-driven layout search.
This initial commit establishes the .dom bridge format and a faithful
port of Urb's top-down quad geometry, validated byte-identical against
Urb across all 35 programme-house example files (including the wall
inset and multi-storey wall-stacking inheritance).
- dom.py: .dom YAML <-> Node tree, parent/below/position linkage,
wall_outer inset on load, raw-corner stash for round-tripping
- geometry.py: Coordinate/Coordinate_a/_b/Area/Length + Coordinate_Offset
- experiments/dump_areas.{py,pl}: geometry regression harness
36 lines
1.6 KiB
Markdown
36 lines
1.6 KiB
Markdown
# homemaker-py
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Programme-driven building-layout search over slicing trees. A clean-room Python
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successor to the Perl [Urb](../urb) project, intended to eventually be 100% Python.
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## Why a rewrite
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Urb represents a building as a binary slicing tree where room sizes are derived
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**top-down** from division ratios. That makes room area an emergent property of
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every cut above it, which:
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- gives the genome low locality (a cut near the root rescales every descendant),
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- makes target room sizes nearly impossible to hit, so the gaussian size penalty
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dominates fitness, and
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- defeats crossover (transplanted subtrees lose their proportions).
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homemaker inverts this: leaves carry **target dimensions** from the programme and
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division ratios are **solved bottom-up** for a fixed topology. The evolutionary
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search then only explores topology + types + adjacency.
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## Phase plan
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1. **Solver experiment** (current): port Urb's geometry, re-solve ratios from
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programme targets, score the result against the original via the Perl oracle.
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2. Native Python fitness (retire the Perl oracle).
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3. Canonical slicing encoding (normalized Polish expression) + memetic search.
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## Layout
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- `src/homemaker/dom.py` — read/write Urb `.dom` YAML into a `Node` tree.
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- `src/homemaker/geometry.py` — faithful port of Urb's top-down geometry.
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- `src/homemaker/programme.py` — parse `patterns.config` space requirements.
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- `src/homemaker/solver.py` — bottom-up ratio solve (scipy).
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- `src/homemaker/oracle.py` — Phase-1 scaffold: score a `.dom` via Urb's `urb-fitness.pl`.
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The Perl oracle is the only throwaway component; everything else is permanent.
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