export / load json

apps/editor/components/editor/export-manager.tsx

@@ -0,0 +1,54 @@
+'use client'
+
+import { useViewer } from '@pascal-app/viewer'
+import { useThree } from '@react-three/fiber'
+import { useEffect } from 'react'
+import { GLTFExporter } from 'three/examples/jsm/exporters/GLTFExporter.js'
+
+export function ExportManager() {
+  const scene = useThree((state) => state.scene)
+  const setExportScene = useViewer((state) => state.setExportScene)
+
+  useEffect(() => {
+    const exportFn = async () => {
+      // Find the scene renderer group by name
+      const sceneGroup = scene.getObjectByName('scene-renderer')
+      if (!sceneGroup) {
+        console.error('scene-renderer group not found')
+        return
+      }
+
+      const exporter = new GLTFExporter()
+      const date = new Date().toISOString().split('T')[0]
+
+      return new Promise<void>((resolve, reject) => {
+        exporter.parse(
+          sceneGroup,
+          (gltf) => {
+            const blob = new Blob([gltf as ArrayBuffer], { type: 'model/gltf-binary' })
+            const url = URL.createObjectURL(blob)
+            const link = document.createElement('a')
+            link.href = url
+            link.download = `model_${date}.glb`
+            link.click()
+            URL.revokeObjectURL(url)
+            resolve()
+          },
+          (error) => {
+            console.error('Export error:', error)
+            reject(error)
+          },
+          { binary: true }
+        )
+      })
+    }
+
+    setExportScene(exportFn)
+
+    return () => {
+      setExportScene(null)
+    }
+  }, [scene, setExportScene])
+
+  return null
+}

apps/editor/components/editor/index.tsx

@@ -18,6 +18,7 @@ import { RoofPanel } from '../ui/panels/roof-panel'
 import { SidebarProvider } from '../ui/primitives/sidebar'
 import { AppSidebar } from '../ui/sidebar/app-sidebar'
 import { CustomCameraControls } from './custom-camera-controls'
+import { ExportManager } from './export-manager'
 import { SelectionManager } from './selection-manager'
 
 useScene.getState().loadScene()
@@ -38,6 +39,7 @@ export default function Editor() {
       </SidebarProvider>
       <Viewer>
         <SelectionManager />
+        <ExportManager />
         {/* Editor only system to toggle zone visibility */}
         <ZoneSystem />
         {/* <Stats /> */}

apps/editor/components/ui/sidebar/panels/settings-panel/index.tsx

@@ -1,14 +1,62 @@
 import { useScene } from "@pascal-app/core";
 import { useViewer } from "@pascal-app/viewer";
-import { Trash2 } from "lucide-react";
+import { Download, Save, Trash2, Upload } from "lucide-react";
+import { useRef } from "react";
 import { Button } from "@/components/ui/primitives/button";
 import useEditor from "@/store/use-editor";
 
 export function SettingsPanel() {
+  const fileInputRef = useRef<HTMLInputElement>(null);
+  const nodes = useScene((state) => state.nodes);
+  const rootNodeIds = useScene((state) => state.rootNodeIds);
+  const setScene = useScene((state) => state.setScene);
   const clearScene = useScene((state) => state.clearScene);
   const resetSelection = useViewer((state) => state.resetSelection);
+  const exportScene = useViewer((state) => state.exportScene);
   const setPhase = useEditor((state) => state.setPhase);
 
+  const handleExport = async () => {
+    if (exportScene) {
+      await exportScene();
+    }
+  };
+
+  const handleSaveBuild = () => {
+    const sceneData = { nodes, rootNodeIds };
+    const json = JSON.stringify(sceneData, null, 2);
+    const blob = new Blob([json], { type: "application/json" });
+    const url = URL.createObjectURL(blob);
+    const link = document.createElement("a");
+    link.href = url;
+    const date = new Date().toISOString().split("T")[0];
+    link.download = `layout_${date}.json`;
+    link.click();
+    URL.revokeObjectURL(url);
+  };
+
+  const handleFileLoad = (e: React.ChangeEvent<HTMLInputElement>) => {
+    const file = e.target.files?.[0];
+    if (!file) return;
+
+    const reader = new FileReader();
+    reader.onload = (event) => {
+      try {
+        const data = JSON.parse(event.target?.result as string);
+        if (data.nodes && data.rootNodeIds) {
+          setScene(data.nodes, data.rootNodeIds);
+          resetSelection();
+          setPhase("site");
+        }
+      } catch (err) {
+        console.error("Failed to load build:", err);
+      }
+    };
+    reader.readAsText(file);
+
+    // Reset input so the same file can be loaded again
+    e.target.value = "";
+  };
+
   const handleResetToDefault = () => {
     clearScene();
     resetSelection();
@@ -17,6 +65,54 @@ export function SettingsPanel() {
 
   return (
     <div className="flex flex-col gap-6 p-3">
+      {/* Export Section */}
+      <div className="space-y-2">
+        <label className="font-medium text-muted-foreground text-xs uppercase">
+          Export
+        </label>
+        <Button
+          className="w-full justify-start gap-2"
+          onClick={handleExport}
+          variant="outline"
+        >
+          <Download className="size-4" />
+          Export 3D Model
+        </Button>
+      </div>
+
+      {/* Save/Load Section */}
+      <div className="space-y-2">
+        <label className="font-medium text-muted-foreground text-xs uppercase">
+          Save & Load
+        </label>
+
+        <Button
+          className="w-full justify-start gap-2"
+          onClick={handleSaveBuild}
+          variant="outline"
+        >
+          <Save className="size-4" />
+          Save Build
+        </Button>
+
+        <Button
+          className="w-full justify-start gap-2"
+          onClick={() => fileInputRef.current?.click()}
+          variant="outline"
+        >
+          <Upload className="size-4" />
+          Load Build
+        </Button>
+
+        <input
+          accept="application/json"
+          className="hidden"
+          onChange={handleFileLoad}
+          ref={fileInputRef}
+          type="file"
+        />
+      </div>
+
       {/* Danger Zone */}
       <div className="space-y-2">
         <label className="font-medium text-destructive text-xs uppercase">

packages/core/src/store/use-scene.ts

@@ -22,6 +22,7 @@ export type SceneState = {
   // Actions
   loadScene: () => void
   clearScene: () => void
+  setScene: (nodes: Record<AnyNodeId, AnyNode>, rootNodeIds: AnyNodeId[]) => void
 
   markDirty: (id: AnyNodeId) => void
   clearDirty: (id: AnyNodeId) => void
@@ -60,6 +61,18 @@ const useScene = create<SceneState>()(
           get().loadScene() // Default scene
         },
 
+        setScene: (nodes, rootNodeIds) => {
+          set({
+            nodes,
+            rootNodeIds,
+            dirtyNodes: new Set<AnyNodeId>(),
+          })
+          // Mark all nodes as dirty to trigger re-validation
+          Object.values(nodes).forEach((node) => {
+            get().markDirty(node.id)
+          })
+        },
+
         loadScene: () => {
           if (get().rootNodeIds.length > 0) {
             // Assign all nodes as dirty to force re-validation

packages/viewer/src/components/renderers/scene-renderer.tsx

@@ -6,7 +6,11 @@ import { NodeRenderer } from "./node-renderer";
 export const SceneRenderer = () => {
   const rootNodes = useScene((state) => state.rootNodeIds);
 
-  return rootNodes.map((nodeId) => (
+  return (
-    <NodeRenderer key={nodeId} nodeId={nodeId} />
+    <group name="scene-renderer">
-  ));
+      {rootNodes.map((nodeId) => (
+        <NodeRenderer key={nodeId} nodeId={nodeId} />
+      ))}
+    </group>
+  );
 };

packages/viewer/src/store/use-viewer.ts

@@ -45,6 +45,10 @@ type ViewerState = {
   resetSelection: () => void;
 
   outliner: Outliner; // No setter as we will manipulate directly the arrays
+
+  // Export functionality
+  exportScene: (() => Promise<void>) | null;
+  setExportScene: (fn: (() => Promise<void>) | null) => void;
 };
 
 const useViewer = create<ViewerState>()((set, get) => ({
@@ -94,6 +98,9 @@ const useViewer = create<ViewerState>()((set, get) => ({
     }),
 
   outliner: { selectedObjects: [], hoveredObjects: [] },
+
+  exportScene: null,
+  setExportScene: (fn) => set({ exportScene: fn }),
 }));
 
 export default useViewer;