Update app.py

app.py

@@ -925,13 +925,13 @@ def apply_preset(name):
     if values is None:
         return gr.update(), gr.update(), gr.update(), gr.update(), gr.update(open=True)
     mood, excited, angry = values
-    return (gr.update(value=max(mood, 0)), gr.update(value=max(-mood, 0)),
+    return (gr.update(value=mood), gr.update(value=-mood),
             gr.update(value=excited), gr.update(value=angry), gr.update())
 
 
-def turn_down_other(changed, other):
-    """Happy and Sad are opposites (the API treats them as one axis): raising one sets the other to 0."""
-    return gr.update(value=0) if changed > 0 and other > 0 else gr.update()
+def mirror(value):
+    """Happy and Sad are one axis seen from both ends: the other slider is always the negative."""
+    return gr.update(value=round(-(value or 0), 2))
 
 
 UTM = "utm_source=huggingface&utm_medium=space&utm_campaign=drama_demo"
@@ -1712,7 +1712,7 @@ def generate(video, happy, sad, excited, angry, updates, preset_name, profile: g
     """UI wrapper around run(): adds the download button and the remaining-generations line."""
     last = (None, IDLE)
     try:
-        mood = (happy or 0) - (sad or 0)  # one axis: positive = happy, negative = sad
+        mood = happy or 0  # one axis: positive = happy, negative = sad (Sad slider is always -Happy)
         for result, status in run(video, mood, excited, angry, updates, preset_name, profile):
             last = (result, status)
             done = result is not None
@@ -1766,11 +1766,11 @@ with gr.Blocks(title=PAGE_TITLE) as demo:
             d_mood, d_exc, d_ang = PRESETS[DEFAULT_PRESET]
             with gr.Accordion("Adjust expression intensity", open=False, elem_id="dr-adjust") as adjust:
                 gr.HTML('<div class="dr-hint">Use the presets as a starting point, then adjust the controls. '
-                        'Happy and Sad are opposites: turning one up turns the other down to 0.</div>')
-                happy = gr.Slider(0, 1, value=max(d_mood, 0), step=0.05, label="Happy",
-                                  info="0 = no added smile · 1 = biggest smile")
-                sad = gr.Slider(0, 1, value=max(-d_mood, 0), step=0.05, label="Sad",
-                                info="0 = no added sadness · 1 = strongest sadness")
+                        'Happy and Sad move in opposite directions: Sad 0.5 is the same as Happy −0.5.</div>')
+                happy = gr.Slider(-1, 1, value=d_mood, step=0.05, label="Happy",
+                                  info="+1 = biggest smile · 0 = neutral · −1 = sad")
+                sad = gr.Slider(-1, 1, value=-d_mood, step=0.05, label="Sad",
+                                info="+1 = strongest sadness · 0 = neutral · −1 = happy")
                 excited = gr.Slider(0, 1, value=d_exc, step=0.05, label="Excitement",
                                     info="0 = no added excitement · 1 = strongest excitement")
                 angry = gr.Slider(0, 1, value=d_ang, step=0.05, label="Anger",
@@ -1857,9 +1857,9 @@ with gr.Blocks(title=PAGE_TITLE) as demo:
 
     preset.change(apply_preset, inputs=[preset], outputs=[happy, sad, excited, angry, adjust],
                   api_visibility="private", show_progress="hidden")
-    happy.input(turn_down_other, inputs=[happy, sad], outputs=[sad], api_visibility="private",
+    happy.input(mirror, inputs=[happy], outputs=[sad], api_visibility="private",
                 show_progress="hidden", trigger_mode="always_last")
-    sad.input(turn_down_other, inputs=[sad, happy], outputs=[happy], api_visibility="private",
+    sad.input(mirror, inputs=[sad], outputs=[happy], api_visibility="private",
               show_progress="hidden", trigger_mode="always_last")
     for slider in (happy, sad, excited, angry):
         slider.release(lambda: CUSTOM, outputs=[preset],