Update app.py

app.py

@@ -320,8 +320,9 @@ class GPUSatelliteModelGenerator:
     def generate_uvs_gpu(vertices, width, height):
         """Generate optimized UV coordinates"""
         uvs = cp.zeros((vertices.shape[0], 2), order='C')
-        uvs[:, 0] = vertices[:, 0] / width
-        uvs[:, 1] = 1 - (vertices[:, 2] / height)
+        # Fix: Use width-1 and height-1 for proper UV scaling, and swap coordinates
+        uvs[:, 0] = vertices[:, 0] * width / ((width - 1) * 2) + 0.5  # Scale and center X coordinate
+        uvs[:, 1] = 1 - (vertices[:, 2] * height / ((height - 1) * 2) + 0.5)  # Scale, flip and center Y coordinate
         return uvs
 
     @staticmethod