Fix asset path usage and refactor 3D model generation logic

main.py

@@ -851,7 +851,7 @@ class Api:
     def edit_external(self, filepath: str):
         # filepath kommt von 2D als "output/foo.png" oder von 3D als "output/foo.png"
         ext = os.path.splitext(filepath)[1].lower()
-        full_path = os.path.join(BASE_DIR, "web", filepath)
+        full_path = os.path.join(WEB_DIR, filepath)
         # Ist es ein Bild oder das PNG eines 3D-Modells?
         if ext == ".png":
             # Prüfe, ob ein GLB daneben liegt
@@ -879,7 +879,7 @@ class Api:
             # ------------- Generate 3D Model -------------
     def generate_3d_model(self, filepath: str):
         # filepath kommt aus JS als "output/flower-1.png"
-        full_path = os.path.join(BASE_DIR, "web", filepath)
+        full_path = os.path.join(WEB_DIR, filepath)
         if not os.path.isfile(full_path):
             self._js("window.on_error", f"Image not found: {full_path}")
             return {"status": "missing_file"}
@@ -901,33 +901,8 @@ class Api:
                 )
                 return
 
-            # Construct the command: sys.executable ensures we run with same Python interpreter
-            script_path = os.path.join(BASE_DIR, "image_to_3d.py")
-            cmd = [sys.executable, script_path, img_path]
-            base, _ = os.path.splitext(img_path)
-            glb_path = base + ".glb"
-            previous_mtime = os.path.getmtime(glb_path) if os.path.isfile(glb_path) else None
-            result = subprocess.run(
-                cmd,
-                capture_output=True,
-                text=True,
-                env=self._subprocess_env(),
-            )
-
-            # Check for success: sidecar or actual .glb in same folder
-            current_mtime = os.path.getmtime(glb_path) if os.path.isfile(glb_path) else None
-
-            if current_mtime is not None and current_mtime != previous_mtime:
-                # Notify JavaScript
-                self._js("window.on_3d_generated", glb_path)
-            else:
-                # If the script failed or no .glb was produced, send an error
-                err_msg = (
-                    result.stderr.strip()
-                    or result.stdout.strip()
-                    or "3D conversion did not produce .glb"
-                )
-                self._js("window.on_error", f"3D Model failed: {err_msg}")
+            glb_path = self._run_generate_3d_and_return(img_path)
+            self._js("window.on_3d_generated", glb_path)
         except Exception as e:
             self._js("window.on_error", f"3D conversion exception: {e}")
 
@@ -942,7 +917,7 @@ class Api:
         Called when user wants both 3D model and equirectangular HDRI for an image.
         Kicks off both processes, waits for both, and (later) calls the next step.
         """
-        full_path = os.path.join(BASE_DIR, "web", filepath)
+        full_path = os.path.join(WEB_DIR, filepath)
         if not os.path.isfile(full_path):
             self._js("window.on_error", f"Image not found: {full_path}")
             return {"status": "missing_file"}