diff --git a/viz/renderer.py b/viz/renderer.py
index 26e4f11..6955f3d 100644
--- a/viz/renderer.py
+++ b/viz/renderer.py
@@ -225,7 +225,7 @@ class Renderer:
         res.num_ws = G.num_ws
         res.has_noise = any('noise_const' in name for name, _buf in G.synthesis.named_buffers())
         res.has_input_transform = (hasattr(G.synthesis, 'input') and hasattr(G.synthesis.input, 'transform'))
-
+        self.lr = lr
         # Set input transform.
         if res.has_input_transform:
             m = np.eye(3)
@@ -262,6 +262,17 @@ class Renderer:
         self.feat_refs = None
         self.points0_pt = None
 
+    def set_latent(self,w,trunc_psi,trunc_cutoff):
+        #label = torch.zeros([1, self.G.c_dim], device=self._device)
+        #w = self.G.mapping(z, label, truncation_psi=trunc_psi, truncation_cutoff=trunc_cutoff)
+        self.w0 = w.detach().clone()
+        if self.w_plus:
+            self.w = w.detach()
+        else:
+            self.w = w[:, 0, :].detach()
+        self.w.requires_grad = True
+        self.w_optim = torch.optim.Adam([self.w], lr=self.lr)
+
     def update_lr(self, lr):
 
         del self.w_optim