made system changes

2026-04-23 09:39:01 +01:00
parent 71296f82af
commit dc177c7689
49 changed files with 6256 additions and 0 deletions
@@ -0,0 +1,31 @@
+import { create } from 'zustand';
+
+interface ViewportState {
+  panX: number;
+  panY: number;
+  zoom: number;
+  setPan: (x: number, y: number) => void;
+  setZoom: (zoom: number, originX?: number, originY?: number) => void;
+  reset: () => void;
+}
+
+export const useViewport = create<ViewportState>((set, get) => ({
+  panX: 0,
+  panY: 0,
+  zoom: 1,
+
+  setPan: (x, y) => set({ panX: x, panY: y }),
+
+  setZoom: (zoom, originX = 0, originY = 0) => {
+    const prev = get();
+    const clampedZoom = Math.min(Math.max(zoom, 0.1), 8);
+    const scale = clampedZoom / prev.zoom;
+    set({
+      zoom: clampedZoom,
+      panX: originX - (originX - prev.panX) * scale,
+      panY: originY - (originY - prev.panY) * scale,
+    });
+  },
+
+  reset: () => set({ panX: 0, panY: 0, zoom: 1 }),
+}));