L/W-HUD in den Zeichenbefehlen (line/polyline/wall/rect/circle/arc)

Alle punktbasierten Zeichenbefehle setzen den Cursor-HUD jetzt einheitlich
über den gemeinsamen segmentHud()-Helper statt eigener Text-Formatierung:

- line/polyline/wall: L/W-Kästchen für das lebende Segment ab dem letzten
  Punkt.
- rect: 2-Punkt/Zentrum-Methode zeigt die Diagonale als L/W; die 3-Punkt-
  Methode zeigt die Basiskante als L/W bzw. Basisbreite+Höhe im Rise-Schritt.
- circle/arc (Radius-Schritt): Radius als „R: …m"-Label statt L/W (kein
  Winkel sinnvoll); arc zeigt im Spannwinkel-Schritt Radius als L und
  Spannwinkel als W.

Alle Werte jetzt mit 3 Nachkommastellen (vorher 2 bzw. 0), konsistent mit
der VW-Konvention der Statusleiste.

Tests: line.test.ts/wall.test.ts prüfen hud.length/angleDeg im onMove-Draft
(inkl. negativer Winkel im Bereich (−180,180] und Segment-Wechsel bei
mehrteiligen Wandzügen).

src/commands/cmds/arc.ts

@@ -73,14 +73,14 @@ function circlePts(center: Vec2, r: number): Vec2[] {
   return pts;
 }
 
-/** Vorschau (offener Bogen) + HUD (Spanne in Grad). */
+/** Vorschau (offener Bogen) + HUD (Radius als L, Spanne als W — L/W-Kästchen). */
 function arcDraft(center: Vec2, r: number, a0: number, a1: number, at: Vec2 | null): ToolDraft {
   if (r < EPS) return { preview: [], vertices: [center] };
   const preview: DraftShape[] = [{ kind: "poly", pts: arcPts(center, r, a0, a1), closed: false }];
   const draft: ToolDraft = { preview, vertices: [center] };
   if (at) {
     const deg = (sweepOf(a0, a1) * 180) / Math.PI;
-    draft.hud = { at, text: `${deg.toFixed(0)}°` };
+    draft.hud = { at, length: r, angleDeg: deg };
   }
   return draft;
 }
@@ -148,7 +148,7 @@ export const arcCommand: Command = {
           draft: {
             preview: [{ kind: "poly", pts: circlePts(s.center, r), closed: true }],
             vertices: [s.center],
-            hud: { at: point, text: `r ${r.toFixed(2)} m` },
+            hud: { at: point, text: `R: ${r.toFixed(3)}m` },
           },
         },
       ];

src/commands/cmds/circle.ts

@@ -68,7 +68,7 @@ function circleDraft(center: Vec2, r: number, at: Vec2 | null): ToolDraft {
   if (r < EPS) return { preview: [], vertices: [center] };
   const preview: DraftShape[] = [{ kind: "poly", pts: circlePts(center, r), closed: true }];
   const draft: ToolDraft = { preview, vertices: [center] };
-  if (at) draft.hud = { at, text: `r ${r.toFixed(2)} m` };
+  if (at) draft.hud = { at, text: `R: ${r.toFixed(3)}m` };
   return draft;
 }
 

src/commands/cmds/line.test.ts

@@ -0,0 +1,87 @@
+/**
+ * Unit-Tests für das Cursor-HUD (Länge/Winkel) des `line`-Befehls: nach dem
+ * Startpunkt muss `onMove` im Draft `hud.length`/`hud.angleDeg` mit den
+ * korrekten Werten liefern (VW-Stil L/W-Kästchen, PlanView rendert es).
+ */
+
+import { describe, it, expect } from "vitest";
+import { lineCommand } from "./line";
+import type { CommandContext, Project, Vec2 } from "../types";
+
+/** Minimalprojekt — nur die Felder, die der Befehl/Context anfassen. */
+function project(): Project {
+  return {
+    id: "t",
+    name: "T",
+    lineStyles: [],
+    hatches: [],
+    components: [],
+    wallTypes: [],
+    drawingLevels: [
+      {
+        id: "eg",
+        name: "EG",
+        kind: "floor",
+        visible: true,
+        locked: false,
+        floorHeight: 2.6,
+        cutHeight: 1.0,
+        baseElevation: 0,
+      },
+    ],
+    layers: [{ code: "20", name: "Zeichnung", color: "#0a0a0a", lw: 0.5, visible: true, locked: false }],
+    walls: [],
+    doors: [],
+    openings: [],
+    ceilings: [],
+    stairs: [],
+    rooms: [],
+    drawings2d: [],
+    context: [],
+  };
+}
+
+function makeCtx(lastPoint: Vec2 | null): CommandContext {
+  const p = project();
+  return {
+    project: p,
+    level: p.drawingLevels[0],
+    defaultCategoryCode: "20",
+    activeLineStyleId: "solid",
+    activeWallTypeId: "aw",
+    lastPoint,
+    selection: { wallIds: [], drawingId: null },
+  };
+}
+
+describe("lineCommand — Cursor-HUD (Länge/Winkel)", () => {
+  it("liefert hud.length/angleDeg im onMove nach dem Startpunkt", () => {
+    const start: Vec2 = { x: 0, y: 0 };
+    const [afterStart] = lineCommand.onInput(
+      lineCommand.init(),
+      { kind: "point", point: start },
+      makeCtx(null),
+    );
+    const [, res] = lineCommand.onMove(afterStart, { x: 3, y: 4 }, null, makeCtx(start));
+    expect(res.draft?.hud?.length).toBeCloseTo(5, 9);
+    expect(res.draft?.hud?.angleDeg).toBeCloseTo((Math.atan2(4, 3) * 180) / Math.PI, 9);
+  });
+
+  it("liefert einen negativen Winkel (Bereich (−180,180]) für Segmente nach unten-links", () => {
+    const start: Vec2 = { x: 0, y: 0 };
+    const [afterStart] = lineCommand.onInput(
+      lineCommand.init(),
+      { kind: "point", point: start },
+      makeCtx(null),
+    );
+    // Richtung (-1,-1) → -135° (wie im VW-Screenshot).
+    const [, res] = lineCommand.onMove(afterStart, { x: -2, y: -2 }, null, makeCtx(start));
+    expect(res.draft?.hud?.angleDeg).toBeCloseTo(-135, 9);
+    expect(res.draft?.hud?.length).toBeCloseTo(Math.hypot(2, 2), 9);
+  });
+
+  it("zeigt KEIN HUD vor dem Startpunkt (phase=start)", () => {
+    const [, res] = lineCommand.onMove(lineCommand.init(), { x: 1, y: 1 }, null, makeCtx(null));
+    expect(res.draft).toBeNull();
+  });
+});

src/commands/cmds/line.ts

@@ -10,7 +10,7 @@
 // Tool. Live-Vorschau + HUD (Länge/Winkel) wie die bestehenden Tools.
 
 import type { Drawing2D } from "../../model/types";
-import { uniqueId } from "../../tools/types";
+import { segmentHud, uniqueId } from "../../tools/types";
 import type {
   Command,
   CommandContext,
@@ -61,14 +61,7 @@ function lineDraft(a: Vec2, cursor: Vec2 | null): ToolDraft {
   const preview: DraftShape[] = [];
   if (cursor && segLen(a, cursor) >= EPS) preview.push({ kind: "line", a, b: cursor });
   const draft: ToolDraft = { preview, vertices: [a] };
-  if (cursor && segLen(a, cursor) >= EPS) {
-    draft.hud = {
-      at: cursor,
-      text: `${segLen(a, cursor).toFixed(2)} m · ${Math.abs(
-        (segAngleDeg(a, cursor) + 360) % 360,
-      ).toFixed(0)}°`,
-    };
-  }
+  if (cursor && segLen(a, cursor) >= EPS) draft.hud = segmentHud(a, cursor);
   return draft;
 }
 

src/commands/cmds/polyline.ts

@@ -6,7 +6,7 @@
 // Akzeptiert je Punkt Maus-Picks UND getippte Koordinaten (0,0 · r3,0 · 5<45).
 
 import type { Drawing2D } from "../../model/types";
-import { uniqueId } from "../../tools/types";
+import { segmentHud, uniqueId } from "../../tools/types";
 import type {
   Command,
   CommandContext,
@@ -74,14 +74,7 @@ function polyDraft(points: Vec2[], cursor: Vec2 | null, closed = false): ToolDra
   const preview: DraftShape[] = [{ kind: "poly", pts, closed: showClosed }];
   const draft: ToolDraft = { preview, vertices: points };
   const last = points[points.length - 1];
-  if (cursor && last && segLen(last, cursor) >= EPS) {
-    draft.hud = {
-      at: cursor,
-      text: `${segLen(last, cursor).toFixed(2)} m · ${Math.abs(
-        (segAngleDeg(last, cursor) + 360) % 360,
-      ).toFixed(0)}°`,
-    };
-  }
+  if (cursor && last && segLen(last, cursor) >= EPS) draft.hud = segmentHud(last, cursor);
   return draft;
 }
 

src/commands/cmds/rect.ts

@@ -17,7 +17,7 @@
 // werden (die Engine löst `r…` relativ zu lastPoint auf).
 
 import type { Drawing2D } from "../../model/types";
-import { uniqueId } from "../../tools/types";
+import { segmentHud, uniqueId } from "../../tools/types";
 import type {
   Command,
   CommandContext,
@@ -196,51 +196,42 @@ function rectGeom(a: Vec2, b: Vec2): { min: Vec2; max: Vec2 } {
 
 // ── Vorschau ─────────────────────────────────────────────────────────────────
 
-function corners4Draft(pts: Vec2[], hudAt: Vec2 | null, hudText: string): ToolDraft {
+function corners4Draft(pts: Vec2[], hud: ToolDraft["hud"] | null): ToolDraft {
   const preview: DraftShape[] = [{ kind: "poly", pts, closed: true }];
   const draft: ToolDraft = { preview, vertices: [pts[0]] };
-  if (hudAt) draft.hud = { at: hudAt, text: hudText };
+  if (hud) draft.hud = hud;
   return draft;
 }
 
-/** Vorschau des 2-Punkt-Rechtecks (achsparallel). */
+/** Vorschau des 2-Punkt-Rechtecks (achsparallel) — HUD zeigt die Diagonale a→cursor. */
 function cornerDraft(a: Vec2, cursor: Vec2 | null): ToolDraft {
   if (!cursor) return { preview: [], vertices: [a] };
   const g = rectGeom(a, cursor);
   const pts: Vec2[] = [g.min, { x: g.max.x, y: g.min.y }, g.max, { x: g.min.x, y: g.max.y }];
-  const w = g.max.x - g.min.x;
-  const h = g.max.y - g.min.y;
-  return corners4Draft(pts, cursor, `${w.toFixed(2)} × ${h.toFixed(2)} m`);
+  return corners4Draft(pts, segLen(a, cursor) >= EPS ? segmentHud(a, cursor) : null);
 }
 
-/** Vorschau des Zentrum-Rechtecks (achsparallel). */
+/** Vorschau des Zentrum-Rechtecks (achsparallel) — HUD zeigt die Diagonale center→cursor. */
 function centerDraft(center: Vec2, cursor: Vec2 | null): ToolDraft {
   if (!cursor) return { preview: [], vertices: [center] };
   const g = centerGeom(center, cursor);
   const pts: Vec2[] = [g.min, { x: g.max.x, y: g.min.y }, g.max, { x: g.min.x, y: g.max.y }];
-  const w = g.max.x - g.min.x;
-  const h = g.max.y - g.min.y;
-  return corners4Draft(pts, cursor, `${w.toFixed(2)} × ${h.toFixed(2)} m`);
+  return corners4Draft(pts, segLen(center, cursor) >= EPS ? segmentHud(center, cursor) : null);
 }
 
 /** Vorschau der Basiskante (3-Punkt, erster Teil). */
 function baseDraft(a: Vec2, cursor: Vec2 | null): ToolDraft {
   if (!cursor || segLen(a, cursor) < EPS) return { preview: [{ kind: "line", a, b: a }], vertices: [a] };
-  const draft: ToolDraft = { preview: [{ kind: "line", a, b: cursor }], vertices: [a] };
-  draft.hud = {
-    at: cursor,
-    text: `${segLen(a, cursor).toFixed(2)} m · ${Math.abs((segAngleDeg(a, cursor) + 360) % 360).toFixed(0)}°`,
-  };
-  return draft;
+  return { preview: [{ kind: "line", a, b: cursor }], vertices: [a], hud: segmentHud(a, cursor) };
 }
 
-/** Vorschau des gedrehten Rechtecks (3-Punkt, zweiter Teil). */
+/** Vorschau des gedrehten Rechtecks (3-Punkt, zweiter Teil) — HUD: Basisbreite + Höhe am Cursor. */
 function riseDraft(a: Vec2, b: Vec2, cursor: Vec2 | null): ToolDraft {
   if (!cursor) return { preview: [{ kind: "line", a, b }], vertices: [a] };
   const pts = rotatedCorners(a, b, cursor);
   const w = segLen(a, b);
   const h = Math.abs(riseFrom(a, b, cursor));
-  return corners4Draft(pts, cursor, `${w.toFixed(2)} × ${h.toFixed(2)} m`);
+  return corners4Draft(pts, { at: cursor, text: `B: ${w.toFixed(3)}m    H: ${h.toFixed(3)}m` });
 }
 
 // ── Commit ───────────────────────────────────────────────────────────────────

src/commands/cmds/wall.test.ts

@@ -0,0 +1,87 @@
+/**
+ * Unit-Tests für das Cursor-HUD (Länge/Winkel) des `wall`-Befehls: nach dem
+ * Startpunkt muss `onMove` im Draft `hud.length`/`hud.angleDeg` relativ zum
+ * ZULETZT gesetzten Achspunkt liefern — auch nach mehreren Segmenten
+ * (Chaining), damit ein mehrteiliger Wandzug je Segment ein frisches HUD zeigt.
+ */
+
+import { describe, it, expect } from "vitest";
+import { wallCommand } from "./wall";
+import type { CommandContext, Project, Vec2 } from "../types";
+
+function project(): Project {
+  return {
+    id: "t",
+    name: "T",
+    lineStyles: [],
+    hatches: [],
+    components: [{ id: "c", name: "C", color: "#ccc", hatchId: "none", joinPriority: 10 }],
+    wallTypes: [
+      { id: "aw", name: "AW", layers: [{ componentId: "c", thickness: 0.2 }] },
+    ],
+    drawingLevels: [
+      {
+        id: "eg",
+        name: "EG",
+        kind: "floor",
+        visible: true,
+        locked: false,
+        floorHeight: 2.6,
+        cutHeight: 1.0,
+        baseElevation: 0,
+      },
+    ],
+    layers: [{ code: "20", name: "Wände", color: "#0a0a0a", lw: 0.5, visible: true, locked: false }],
+    walls: [],
+    doors: [],
+    openings: [],
+    ceilings: [],
+    stairs: [],
+    rooms: [],
+    drawings2d: [],
+    context: [],
+  };
+}
+
+function makeCtx(lastPoint: Vec2 | null): CommandContext {
+  const p = project();
+  return {
+    project: p,
+    level: p.drawingLevels[0],
+    defaultCategoryCode: "20",
+    activeLineStyleId: "solid",
+    activeWallTypeId: "aw",
+    lastPoint,
+    selection: { wallIds: [], drawingId: null },
+  };
+}
+
+describe("wallCommand — Cursor-HUD (Länge/Winkel)", () => {
+  it("liefert hud.length/angleDeg relativ zum Startpunkt", () => {
+    const start: Vec2 = { x: 0, y: 0 };
+    const [afterStart] = wallCommand.onInput(
+      wallCommand.init(),
+      { kind: "point", point: start },
+      makeCtx(null),
+    );
+    const [, res] = wallCommand.onMove(afterStart, { x: 4, y: 0 }, null, makeCtx(start));
+    expect(res.draft?.hud?.length).toBeCloseTo(4, 9);
+    expect(res.draft?.hud?.angleDeg).toBeCloseTo(0, 9);
+  });
+
+  it("HUD bezieht sich nach dem zweiten Punkt auf das NEUE (letzte) Segment", () => {
+    const p0: Vec2 = { x: 0, y: 0 };
+    const p1: Vec2 = { x: 4, y: 0 };
+    const [s1] = wallCommand.onInput(wallCommand.init(), { kind: "point", point: p0 }, makeCtx(null));
+    const [s2] = wallCommand.onInput(s1, { kind: "point", point: p1 }, makeCtx(p0));
+    // Nächstes Segment ab p1 nach oben (0,3) → Länge 3, Winkel 90°.
+    const [, res] = wallCommand.onMove(s2, { x: 4, y: 3 }, null, makeCtx(p1));
+    expect(res.draft?.hud?.length).toBeCloseTo(3, 9);
+    expect(res.draft?.hud?.angleDeg).toBeCloseTo(90, 9);
+  });
+
+  it("zeigt KEIN HUD vor dem Startpunkt (phase=start)", () => {
+    const [, res] = wallCommand.onMove(wallCommand.init(), { x: 1, y: 1 }, null, makeCtx(null));
+    expect(res.draft).toBeNull();
+  });
+});

src/commands/cmds/wall.ts

@@ -18,7 +18,7 @@
 import type { Wall, WallType } from "../../model/types";
 import { wallTypeThickness } from "../../model/types";
 import { wallCorners } from "../../model/geometry";
-import { uniqueId } from "../../tools/types";
+import { segmentHud, uniqueId } from "../../tools/types";
 import type {
   Command,
   CommandContext,
@@ -164,14 +164,7 @@ function wallDraft(points: Vec2[], cursor: Vec2 | null, thickness: number): Tool
   }
   const draft: ToolDraft = { preview, vertices: points };
   const last = points[points.length - 1];
-  if (cursor && last && segLen(last, cursor) >= EPS) {
-    draft.hud = {
-      at: cursor,
-      text: `${segLen(last, cursor).toFixed(2)} m · ${Math.abs(
-        (segAngleDeg(last, cursor) + 360) % 360,
-      ).toFixed(0)}°`,
-    };
-  }
+  if (cursor && last && segLen(last, cursor) >= EPS) draft.hud = segmentHud(last, cursor);
   return draft;
 }