feat: v0.3 报价算料引擎与仓库库存模块

后端: - 报价算料: 从drawing_data几何提取型材清单(外框/中梃/扇框投影长度) 与玻璃面积(鞋带公式), 套价格本计价, 支持样板/订单/自定义图纸三入口 - 仓库库存: 材料CRUD/出入库/流水/负库存拦截/预警线 - SQLite默认路径锚定项目根目录(修复cwd依赖) 前端: - 仓库库存页(筛选/出入库对话框/预警高亮) - 算料报价弹窗(样板库与订单详情入口, 支持打印) - 路由与导航更新(8页面) 回归: 9个API端点全部200, 报价/优化/SPA路由验证通过
2026-09-20 08:58:14 -07:00
parent f7a555dd6c
commit 065d387399
16 changed files with 630 additions and 8 deletions
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+"""报价算料服务：从 drawing_data 几何信息提取型材下料清单与玻璃面积，套价格本计价。
+
+提取规则（自研 v1，工程近似）：
+- 外框：每 Frame 形状 2 根宽 + 2 根高（忽略 45° 拼角损耗）
+- 中梃：每条分割线按其在框内投影长度计（竖梃=框高，横梃=框宽）
+- 扇框：每个 Sash 4 根（2×扇宽 + 2×扇高）
+- 玻璃：全部玻璃区域面积之和（鞋带公式）
+"""
+from dataclasses import dataclass, field
+
+from huamenchuang.core.drawing import DrawingData, parse_drawing
+
+
+@dataclass
+class BarItem:
+    """型材清单行。"""
+    kind: str        # frame/mullion/sash
+    length: int      # mm
+    qty: int = 1
+    note: str = ""
+
+
+@dataclass
+class TakeoffResult:
+    bars: list[BarItem] = field(default_factory=list)
+    glass_area_m2: float = 0.0
+    width_mm: int = 0
+    height_mm: int = 0
+
+
+def _shoelace_area(pts: list[tuple[float, float]]) -> float:
+    """多边形面积（鞋带公式）。"""
+    n = len(pts)
+    s = 0.0
+    for i in range(n):
+        x1, y1 = pts[i]
+        x2, y2 = pts[(i + 1) % n]
+        s += x1 * y2 - x2 * y1
+    return abs(s) / 2
+
+
+def _region_bbox(region_pts):
+    xs = [p[0] for p in region_pts]
+    ys = [p[1] for p in region_pts]
+    return min(xs), min(ys), max(xs), max(ys)
+
+
+def takeoff(dd: DrawingData) -> TakeoffResult:
+    """从解析后的 drawing_data 提取算料清单。"""
+    result = TakeoffResult()
+    xs, ys = [], []
+
+    for shape in dd.get("sm", []):
+        regions = [[(seg["ps"]["x"], seg["ps"]["y"]) for seg in r]
+                   for r in ((shape.get("polygon") or {}).get("polygon") or [])]
+        if not regions:
+            continue
+        # 形状外框 bbox
+        all_pts = [p for r in regions for p in r]
+        x0, y0, x1, y1 = _region_bbox(all_pts)
+        w, h = round(x1 - x0), round(y1 - y0)
+        xs.extend([x0, x1])
+        ys.extend([y0, y1])
+        result.bars.append(BarItem("frame", w, 2, "外框-宽"))
+        result.bars.append(BarItem("frame", h, 2, "外框-高"))
+
+        # 中梃：投影长度（竖梃=框高，横梃=框宽）
+        for sp in ((shape.get("mm") or {}).get("sp") or []):
+            norm = sp["line"]["norm"]
+            if abs(norm["x"]) >= abs(norm["y"]):
+                result.bars.append(BarItem("mullion", h, 1, "竖梃"))
+            else:
+                result.bars.append(BarItem("mullion", w, 1, "横梃"))
+
+        # 玻璃面积
+        result.glass_area_m2 += sum(_shoelace_area(r) for r in regions) / 1_000_000
+
+        # 扇框
+        for sub in (shape.get("sm") or []):
+            bd = sub.get("bd") if isinstance(sub, dict) else None
+            if not bd or bd.get("hidden"):
+                continue
+            bw = round(abs(bd["to"]["x"] - bd["from"]["x"]))
+            bh = round(abs(bd["to"]["y"] - bd["from"]["y"]))
+            if bw < 10 or bh < 10:
+                continue
+            result.bars.append(BarItem("sash", bw, 2, "扇框-宽"))
+            result.bars.append(BarItem("sash", bh, 2, "扇框-高"))
+
+    if xs:
+        result.width_mm = round(max(xs) - min(xs))
+        result.height_mm = round(max(ys) - min(ys))
+    return result
+
+
+def merge_bars(bars: list[BarItem]) -> list[dict]:
+    """同长度同类合并。"""
+    merged: dict[tuple, dict] = {}
+    for b in bars:
+        key = (b.kind, b.length, b.note)
+        if key in merged:
+            merged[key]["qty"] += b.qty
+        else:
+            merged[key] = {"kind": b.kind, "length": b.length, "note": b.note, "qty": b.qty}
+    return sorted(merged.values(), key=lambda x: -x["length"])
+
+
+def quote(drawing: str | dict, prices: dict | None = None) -> dict:
+    """完整报价：算料 + 套价。
+
+    prices 结构: {frame: 元/米, mullion: 元/米, sash: 元/米, glass: 元/㎡, hardware: 元/扇}
+    """
+    p = {"frame": 45, "mullion": 40, "sash": 50, "glass": 120, "hardware": 180}
+    if prices:
+        p.update(prices)
+
+    dd = parse_drawing(drawing)
+    t = takeoff(dd)
+    rows, total = [], 0.0
+    unit_kind = {"frame": "frame", "mullion": "mullion", "sash": "sash"}
+    for b in merge_bars(t.bars):
+        amount = b["length"] * b["qty"] / 1000 * p[unit_kind[b["kind"]]]
+        total += amount
+        rows.append({**b, "unit_price": p[unit_kind[b["kind"]]], "unit": "元/米", "amount": round(amount, 2)})
+
+    glass_amount = t.glass_area_m2 * p["glass"]
+    total += glass_amount
+    rows.append({"kind": "glass", "length": 0, "note": "玻璃", "qty": round(t.glass_area_m2, 3),
+                 "unit_price": p["glass"], "unit": "元/㎡", "amount": round(glass_amount, 2)})
+
+    sash_count = sum(
+        1 for s in dd.get("sm", []) for sub in (s.get("sm") or [])
+        if isinstance(sub, dict) and sub.get("bd") and not sub.get("bd").get("hidden")
+    )
+    hw_amount = sash_count * p["hardware"]
+    if sash_count:
+        rows.append({"kind": "hardware", "length": 0, "note": "五金", "qty": sash_count,
+                     "unit_price": p["hardware"], "unit": "元/扇", "amount": round(hw_amount, 2)})
+        total += hw_amount
+
+    return {
+        "rows": rows,
+        "glass_area_m2": round(t.glass_area_m2, 3),
+        "width_mm": t.width_mm,
+        "height_mm": t.height_mm,
+        "total": round(total, 2),
+    }