task(D3): construction tools - point placer, xline (bidirectional), ray (unidirectional) on auto-created defpoints layer with construction tags

frontend/src/kernel/document/CADDocument.ts

@@ -112,6 +112,11 @@ export class CADDocument {
   }
 
 
+  /** Fügt einen Layer hinzu (überschreibt gleiche ID, kein Undo-Schritt). */
+  addLayer(layer: CADLayer): void {
+    this.ydoc.data.layers.set(layer.id, layer);
+  }
+
   /**
    * Ersetzt das komplette Layer-Set (Task H2: Projekt-Templates).
    * Bestehende Layer werden entfernt, Template-Layer übernommen.

frontend/src/plugins/builtin/core-drawing/index.ts

@@ -662,15 +662,244 @@ export const splineTool: ToolExtensionV2 = {
   },
 };
 
+// ─────────────────────────────────────────────────────────────
+// Task D3: Point/XLine/Ray — Konstruktions-Elemente auf defpoints.
+// ─────────────────────────────────────────────────────────────
+
+/** Auto-Anlegen des defpoints-Layers (Task D3) falls fehlt. */
+function ensureDefpointsLayer(ctx: FullToolContext): void {
+  const doc = ctx.doc as unknown as {
+    getLayer(id: string): unknown;
+    addLayer(l: unknown): void;
+  } | undefined;
+  if (!doc || doc.getLayer('defpoints')) return;
+  doc.addLayer({
+    id: 'defpoints',
+    name: 'defpoints',
+    visible: true,
+    locked: false,
+    color: '#8a8f98',
+    lineType: 'dotted',
+    transparency: 0.5,
+    sortOrder: 999,
+    parentId: null,
+  });
+}
+
+/** Konstruktions-Element-Basis-Props (construction-Tags, Task D3). */
+function constructionProps(): Record<string, unknown> {
+  return { stroke: '#8a8f98', strokeWidth: 1, construction: true };
+}
+
+export const pointTool: ToolExtensionV2 = {
+  manifest: {
+    id: 'point',
+    label: 'Punkt',
+    icon: '\u2022',
+    ribbonTab: 'canvas',
+    tags: ['basic'],
+    description: 'Konstruktionspunkt platzieren (defpoints-Layer)',
+  },
+  optionsSchema: [],
+  handlers: {
+    down(e, ctx) {
+      const c = ctx as FullToolContext;
+      if (!c.doc) return;
+      ensureDefpointsLayer(c);
+      const r = 1.5;
+      const el: CADElement = {
+        id: uid('point'),
+        type: 'circle',
+        layerId: 'defpoints',
+        x: e.world.x,
+        y: e.world.y,
+        width: r * 2,
+        height: r * 2,
+        properties: { ...constructionProps(), radius: r, point: true },
+      } as unknown as CADElement;
+      c.doc.transact(() => c.doc!.addElement(el));
+      ctx.setStatus(`Punkt platziert (${el.id})`);
+    },
+  },
+};
+
+/** XLine: sehr lange Linie in BEIDE Richtungen um den Basispunkt. */
+let xlineBase: Pt | null = null;
+
+export const xlineTool: ToolExtensionV2 = {
+  manifest: {
+    id: 'xline',
+    label: 'Konstruktionslinie',
+    icon: '\u2194',
+    ribbonTab: 'canvas',
+    tags: ['basic'],
+    description: 'Unendliche Konstruktionslinie: Basispunkt + Richtung klicken',
+  },
+  optionsSchema: [],
+  handlers: {
+    down(e, ctx) {
+      const c = ctx as FullToolContext;
+      if (!c.doc) return;
+      if (!xlineBase) {
+        xlineBase = e.world;
+        ctx.setStatus('Konstruktionslinie: Basis gesetzt – Richtung klicken');
+        return;
+      }
+      ensureDefpointsLayer(c);
+      const dx = e.world.x - xlineBase.x;
+      const dy = e.world.y - xlineBase.y;
+      const len = Math.hypot(dx, dy);
+      if (len < 0.001) { xlineBase = null; return; }
+      const ux = dx / len, uy = dy / len;
+      const L = 100000;
+      const el: CADElement = {
+        id: uid('xline'),
+        type: 'line',
+        layerId: 'defpoints',
+        x: xlineBase.x,
+        y: xlineBase.y,
+        width: 0,
+        height: 0,
+        properties: {
+          ...constructionProps(),
+          x1: xlineBase.x - ux * L,
+          y1: xlineBase.y - uy * L,
+          x2: xlineBase.x + ux * L,
+          y2: xlineBase.y + uy * L,
+        },
+      } as unknown as CADElement;
+      c.doc.transact(() => c.doc!.addElement(el));
+      xlineBase = null;
+      ctx.setPreview?.(null);
+      ctx.setStatus(`Konstruktionslinie erstellt (${el.id})`);
+    },
+    move(e, ctx) {
+      const c = ctx as FullToolContext;
+      if (!xlineBase) return;
+      const dx = e.world.x - xlineBase.x;
+      const dy = e.world.y - xlineBase.y;
+      const len = Math.hypot(dx, dy);
+      if (len < 0.001) return;
+      const ux = dx / len, uy = dy / len;
+      const L = 100000;
+      ctx.setPreview?.({
+        id: '__preview_xline__',
+        type: 'line',
+        layerId: 'defpoints',
+        x: xlineBase.x,
+        y: xlineBase.y,
+        width: 0,
+        height: 0,
+        properties: {
+          ...constructionProps(),
+          x1: xlineBase.x - ux * L,
+          y1: xlineBase.y - uy * L,
+          x2: xlineBase.x + ux * L,
+          y2: xlineBase.y + uy * L,
+        },
+      } as unknown as CADElement);
+    },
+    cancel(ctx) {
+      xlineBase = null;
+      ctx.setPreview?.(null);
+      ctx.setStatus('Konstruktionslinie abgebrochen');
+    },
+  },
+};
+
+/** Ray: Linie ab Basispunkt NUR in Klickrichtung. */
+let rayBase: Pt | null = null;
+
+export const rayTool: ToolExtensionV2 = {
+  manifest: {
+    id: 'ray',
+    label: 'Strahl',
+    icon: '\u2192',
+    ribbonTab: 'canvas',
+    tags: ['basic'],
+    description: 'Strahl ab Basispunkt in Klickrichtung',
+  },
+  optionsSchema: [],
+  handlers: {
+    down(e, ctx) {
+      const c = ctx as FullToolContext;
+      if (!c.doc) return;
+      if (!rayBase) {
+        rayBase = e.world;
+        ctx.setStatus('Strahl: Basis gesetzt – Richtung klicken');
+        return;
+      }
+      ensureDefpointsLayer(c);
+      const dx = e.world.x - rayBase.x;
+      const dy = e.world.y - rayBase.y;
+      const len = Math.hypot(dx, dy);
+      if (len < 0.001) { rayBase = null; return; }
+      const ux = dx / len, uy = dy / len;
+      const L = 100000;
+      const el: CADElement = {
+        id: uid('ray'),
+        type: 'line',
+        layerId: 'defpoints',
+        x: rayBase.x,
+        y: rayBase.y,
+        width: 0,
+        height: 0,
+        properties: {
+          ...constructionProps(),
+          x1: rayBase.x,
+          y1: rayBase.y,
+          x2: rayBase.x + ux * L,
+          y2: rayBase.y + uy * L,
+        },
+      } as unknown as CADElement;
+      c.doc.transact(() => c.doc!.addElement(el));
+      rayBase = null;
+      ctx.setPreview?.(null);
+      ctx.setStatus(`Strahl erstellt (${el.id})`);
+    },
+    move(e, ctx) {
+      const c = ctx as FullToolContext;
+      if (!rayBase) return;
+      const dx = e.world.x - rayBase.x;
+      const dy = e.world.y - rayBase.y;
+      const len = Math.hypot(dx, dy);
+      if (len < 0.001) return;
+      const ux = dx / len, uy = dy / len;
+      const L = 100000;
+      ctx.setPreview?.({
+        id: '__preview_ray__',
+        type: 'line',
+        layerId: 'defpoints',
+        x: rayBase.x,
+        y: rayBase.y,
+        width: 0,
+        height: 0,
+        properties: {
+          ...constructionProps(),
+          x1: rayBase.x,
+          y1: rayBase.y,
+          x2: rayBase.x + ux * L,
+          y2: rayBase.y + uy * L,
+        },
+      } as unknown as CADElement);
+    },
+    cancel(ctx) {
+      rayBase = null;
+      ctx.setPreview?.(null);
+      ctx.setStatus('Strahl abgebrochen');
+    },
+  },
+};
+
 export const coreDrawingPlugin: PluginV2 = {
   manifest: {
     id: 'core-drawing',
     name: 'Zeichnen (Kern)',
-    version: '1.4.0',
+    version: '1.5.0',
     author: 'web-cad team',
     description: 'Zeichenwerkzeuge V2: Linie, Rechteck, Kreis, Bogen, Polylinie, Polygon, RevCloud.',
     category: 'tools',
     enabledByDefault: true,
   },
-  tools: [lineTool, rectTool, circleTool, arcTool, polylineTool, polygonTool, revcloudTool, ellipseTool, splineTool],
+  tools: [lineTool, rectTool, circleTool, arcTool, polylineTool, polygonTool, revcloudTool, ellipseTool, splineTool, pointTool, xlineTool, rayTool],
 };