Nativer 2D-Viewport: Raumstempel-Text (Einstrich-Vektorschrift)

Neues strokeFont.ts (kompakte Einstrich-Schrift: A-Z, 0-9, Symbole inkl. ²/·).
toRenderScene wickelt Text-Primitive (Doc-Zeilen + Live-Zusatzzeilen) zu Glyph-
Polylinien in Modell-Metern ab (vertikal um den Anker zentriert, Ausrichtung je
Absatz) und speist sie wie die Schraffuren in die render2d-Szene. Erste Fassung
in Versalien; render2d bleibt textrenderer-frei. Damit zeigt der native Grundriss
den Raumstempel (Name/Fläche/SIA) analog zum Browser.

src/plan/strokeFont.ts

@@ -0,0 +1,91 @@
+// Kompakte Einstrich-Vektorschrift für den nativen 2D-Viewport (render2d hat
+// keinen Textrenderer). Jedes Glyph ist eine Liste von Strichen (Polylinien) in
+// einem Raster: x in [0..5], y in [0..7], BASISLINIE y=0, Versalhöhe y=7, y nach
+// OBEN (passt zu render2d, dessen to_screen y spiegelt). Kleinbuchstaben werden
+// (erste Fassung) als Versalien gezeichnet. Ausgabe der Layout-Funktion sind
+// Modell-Meter-Polylinien, die 1:1 in die render2d-Szene fließen.
+
+export type StrokePoint = [number, number];
+export type Glyph = { w: number; strokes: StrokePoint[][] };
+
+// Rasterhöhe (Versalhöhe) in Font-Einheiten.
+const CAP = 7;
+// Standard-Vorschub (Glyphbreite inkl. Seitenabstand) in Font-Einheiten.
+const ADV = 6;
+
+// Hilfen zum knappen Definieren.
+const g = (w: number, ...strokes: StrokePoint[][]): Glyph => ({ w, strokes });
+
+// Einstrich-Glyphen (bewusst geradlinig/einfach, gut lesbar).
+const FONT: Record<string, Glyph> = {
+  " ": g(ADV),
+  A: g(ADV, [[0, 0], [2.5, 7], [5, 0]], [[1, 3], [4, 3]]),
+  B: g(ADV, [[0, 0], [0, 7], [3.5, 7], [4.5, 5.5], [3.5, 4], [0, 4]], [[3.5, 4], [4.7, 2], [3.5, 0], [0, 0]]),
+  C: g(ADV, [[5, 6], [3, 7], [1, 6], [0, 3.5], [1, 1], [3, 0], [5, 1]]),
+  D: g(ADV, [[0, 0], [0, 7], [3, 7], [5, 4.5], [5, 2.5], [3, 0], [0, 0]]),
+  E: g(ADV, [[5, 7], [0, 7], [0, 0], [5, 0]], [[0, 3.5], [3.5, 3.5]]),
+  F: g(ADV, [[5, 7], [0, 7], [0, 0]], [[0, 3.5], [3.5, 3.5]]),
+  G: g(ADV, [[5, 6], [3, 7], [1, 6], [0, 3.5], [1, 1], [3, 0], [5, 1], [5, 3], [3, 3]]),
+  H: g(ADV, [[0, 0], [0, 7]], [[5, 0], [5, 7]], [[0, 3.5], [5, 3.5]]),
+  I: g(3, [[1.5, 0], [1.5, 7]]),
+  J: g(ADV, [[4, 7], [4, 1.5], [3, 0], [1, 0], [0, 1.5]]),
+  K: g(ADV, [[0, 0], [0, 7]], [[5, 7], [0, 3.5], [5, 0]]),
+  L: g(ADV, [[0, 7], [0, 0], [5, 0]]),
+  M: g(7, [[0, 0], [0, 7], [3.5, 3], [7, 7], [7, 0]]),
+  N: g(ADV, [[0, 0], [0, 7], [5, 0], [5, 7]]),
+  O: g(ADV, [[1, 6], [0, 3.5], [1, 1], [3, 0], [4.5, 1.5], [5, 3.5], [4, 6], [3, 7], [1, 6]]),
+  P: g(ADV, [[0, 0], [0, 7], [3.5, 7], [5, 5.5], [3.5, 4], [0, 4]]),
+  Q: g(ADV, [[1, 6], [0, 3.5], [1, 1], [3, 0], [5, 2], [5, 4], [3, 7], [1, 6]], [[3, 2], [5, 0]]),
+  R: g(ADV, [[0, 0], [0, 7], [3.5, 7], [5, 5.5], [3.5, 4], [0, 4]], [[3, 4], [5, 0]]),
+  S: g(ADV, [[5, 6], [3, 7], [1, 6.5], [1, 4.5], [4, 3], [4.5, 1.5], [3, 0], [0.5, 0.8]]),
+  T: g(ADV, [[0, 7], [5, 7]], [[2.5, 7], [2.5, 0]]),
+  U: g(ADV, [[0, 7], [0, 1.5], [1.5, 0], [3.5, 0], [5, 1.5], [5, 7]]),
+  V: g(ADV, [[0, 7], [2.5, 0], [5, 7]]),
+  W: g(8, [[0, 7], [1.5, 0], [4, 4], [6.5, 0], [8, 7]]),
+  X: g(ADV, [[0, 0], [5, 7]], [[0, 7], [5, 0]]),
+  Y: g(ADV, [[0, 7], [2.5, 3.5], [5, 7]], [[2.5, 3.5], [2.5, 0]]),
+  Z: g(ADV, [[0, 7], [5, 7], [0, 0], [5, 0]]),
+  "0": g(ADV, [[1, 6], [0, 3.5], [1, 1], [3, 0], [4.5, 1.5], [5, 3.5], [4, 6], [3, 7], [1, 6]], [[1, 1], [4, 6]]),
+  "1": g(4, [[1, 5.5], [2.5, 7], [2.5, 0]], [[1, 0], [4, 0]]),
+  "2": g(ADV, [[0, 5.5], [1, 7], [3.5, 7], [5, 5.5], [4, 3.5], [0, 0], [5, 0]]),
+  "3": g(ADV, [[0, 6.5], [2, 7], [4.5, 5.5], [3, 4], [4.5, 2], [3, 0], [1, 0.3]]),
+  "4": g(ADV, [[3.5, 0], [3.5, 7], [0, 2.5], [5, 2.5]]),
+  "5": g(ADV, [[5, 7], [1, 7], [0.8, 4], [3, 4.5], [4.5, 3], [3.5, 0.3], [1, 0], [0, 1]]),
+  "6": g(ADV, [[4.5, 6], [3, 7], [1, 6], [0, 3], [0.5, 1], [2.5, 0], [4.5, 1], [4.8, 2.8], [3, 4], [1, 3.5], [0.2, 2.5]]),
+  "7": g(ADV, [[0, 7], [5, 7], [2, 0]]),
+  "8": g(ADV, [[2.5, 4], [1, 5.5], [2.5, 7], [4, 5.5], [2.5, 4], [1, 2], [2.5, 0], [4, 2], [2.5, 4]]),
+  "9": g(ADV, [[4.8, 4.5], [4, 6.5], [2, 7], [0.5, 5.5], [1, 3.5], [3.5, 3], [5, 4]]),
+  ".": g(3, [[1, 0], [1.5, 0.4]]),
+  ",": g(3, [[1.5, 0.6], [0.8, -0.8]]),
+  ":": g(3, [[1.4, 0], [1.6, 0.4]], [[1.4, 3.5], [1.6, 3.9]]),
+  "·": g(3, [[1, 3.4], [1.6, 3.8]]),
+  "-": g(ADV, [[1, 3.5], [4, 3.5]]),
+  "/": g(ADV, [[0, 0], [5, 7]]),
+  "(": g(3, [[2.5, 7], [1, 5], [1, 2], [2.5, 0]]),
+  ")": g(3, [[0.5, 7], [2, 5], [2, 2], [0.5, 0]]),
+  "%": g(7, [[0, 0], [7, 7]], [[1, 6], [2, 7], [1, 5.5], [0, 6.5], [1, 6]], [[5, 1.5], [6, 2.5], [5, 0.5], [4, 1.5], [5, 1.5]]),
+  "²": g(4, [[0, 5.5], [1, 7], [2.8, 6], [1.5, 4.8], [0, 4], [3, 4]]),
+  "°": g(4, [[1.5, 5.5], [0.7, 6.2], [1.5, 7], [2.3, 6.2], [1.5, 5.5]]),
+};
+
+/**
+ * Zeichnet eine Zeile Text (Großschreibung) in Font-Einheiten ab (0,0) startend,
+ * baseline y=0, x nach rechts. Liefert Polylinien in Font-Einheiten + Gesamtbreite.
+ */
+export function layoutLine(text: string): { strokes: StrokePoint[][]; width: number } {
+  const strokes: StrokePoint[][] = [];
+  let cx = 0;
+  for (const raw of text) {
+    const ch = FONT[raw] ? raw : raw.toUpperCase();
+    const gl = FONT[ch] ?? FONT[" "];
+    for (const s of gl.strokes) {
+      strokes.push(s.map(([x, y]) => [x + cx, y] as StrokePoint));
+    }
+    cx += (gl.w + 1);
+  }
+  // letzte Zusatzbreite (Seitenabstand) wieder abziehen.
+  const width = Math.max(0, cx - 1);
+  return { strokes, width };
+}
+
+export { CAP, ADV };

src/plan/toRenderScene.ts

@@ -9,9 +9,15 @@
 
 import type { Plan, Primitive } from "./generatePlan";
 import { applyDashRuns, buildHatchRuns } from "./glPlan/glPlanHatch";
+import { CAP, layoutLine } from "./strokeFont";
 
 type LinePrim = Extract<Primitive, { kind: "line" }>;
 
+/** Modell-Meter pro Schriftpunkt (Referenz-Massstab 1:100, wie im SVG-Pfad). */
+const METERS_PER_PT = (1 / 72) * 0.0254 * 100;
+/** Strichbreite der Text-Glyphen in Papier-mm (Haarlinie). */
+const TEXT_WIDTH_MM = 0.15;
+
 export type RPoint = [number, number];
 export type RRgba = [number, number, number, number];
 
@@ -230,8 +236,49 @@ export function planToRenderScene(plan: Plan): RScene {
       // Bogen als EINE zusammenhängende Polylinie (gehrte Sehnen-Ecken).
       const poly = tessellateArc(p.center, p.from, p.to, p.r);
       if (poly.length >= 2) polylines.push({ pts: poly, color: col, widthMm: p.weightMm });
+    } else if (p.kind === "text") {
+      flushRun();
+      // Raumstempel: Doc-Zeilen + Live-Zusatzzeilen als Einstrich-Glyph-Polylinien
+      // (Modell-Meter, vertikal um den Anker zentriert). Erste Fassung: Versalien.
+      const col = toRgba(p.color, 1) ?? [0.1, 0.1, 0.1, 1];
+      const docLines = p.doc.paragraphs.map((par) => ({
+        text: par.runs.map((r) => r.text).join(""),
+        align: par.align ?? "left",
+        sizePt: p.basePt,
+      }));
+      const extraLines = p.extraLines.map((t) => ({
+        text: t,
+        align: "center" as const,
+        sizePt: p.basePt * 0.8,
+      }));
+      const allLines = [...docLines, ...extraLines].filter((l) => l.text.length > 0);
+      if (allLines.length > 0) {
+        const gaps = allLines.map((l) => l.sizePt * METERS_PER_PT * 1.3);
+        const totalH = gaps.reduce((a, b) => a + b, 0);
+        let cursorY = p.at.y + totalH / 2;
+        allLines.forEach((line, i) => {
+          const scale = (line.sizePt * METERS_PER_PT * 0.7) / CAP;
+          cursorY -= gaps[i];
+          const baseY = cursorY;
+          const { strokes, width } = layoutLine(line.text);
+          const wModel = width * scale;
+          const startX =
+            line.align === "center"
+              ? p.at.x - wModel / 2
+              : line.align === "right"
+              ? p.at.x - wModel
+              : p.at.x;
+          for (const s of strokes) {
+            if (s.length < 2) continue;
+            polylines.push({
+              pts: s.map(([x, y]) => [startX + x * scale, baseY + y * scale] as RPoint),
+              color: col,
+              widthMm: TEXT_WIDTH_MM,
+            });
+          }
+        });
+      }
     } else {
-      // "text" wird bewusst übersprungen (render2d rendert keinen Text).
       flushRun();
     }
   }