Update app.py

app.py

@@ -6,6 +6,7 @@ from typing import List, Dict
 import gradio as gr
 import plotly.graph_objects as go
 
+
 # --------- Heuristic Scoring Logic ---------
 
 SENTENCE_SPLIT_PATTERN = re.compile(r'(?<=[.!?])\s+')
@@ -45,10 +46,22 @@ def label_from_score(score: int) -> str:
         return "Low–Medium Trust"
     return "Low Trust"
 
+import numpy as np
 def make_gauge(score: int):
-    # keep score in range
     score = max(0, min(100, score))
 
+    # Convert score (0–100) into radians for needle angle
+    # Gauge runs from -90° (left) to +90° (right)
+    angle = (score / 100) * 180 - 90  
+    angle_rad = angle * 3.14159 / 180
+
+    # Needle length
+    r = 0.75
+
+    # Needle endpoint
+    x = 0.5 + r * np.cos(angle_rad)
+    y = 0.0 + r * np.sin(angle_rad)
+
     fig = go.Figure(
         go.Indicator(
             mode="gauge+number",
@@ -59,38 +72,48 @@ def make_gauge(score: int):
             },
             gauge={
                 "shape": "angular",
-                "axis": {
-                    "range": [0, 100],
-                    "visible": False,    # hide tick labels
-                },
-                # transparent bar so we only see the needle + background arc
+                "axis": {"range": [0, 100], "visible": False},
                 "bar": {
-                    "color": "rgba(0,0,0,0)",
-                    "thickness": 0.15
+                    "color": "rgba(0,0,0,0)",  # keep transparent
+                    "thickness": 0.1
                 },
                 "bgcolor": "white",
                 "borderwidth": 0,
-                # three shades of blue across the whole arc
                 "steps": [
-                    {"range": [0, 33], "color": "#c7d2fe"},   # light blue
-                    {"range": [33, 66], "color": "#60a5fa"},  # medium blue
-                    {"range": [66, 100], "color": "#1d4ed8"}, # dark blue
+                    {"range": [0, 33], "color": "#c7d2fe"},
+                    {"range": [33, 66], "color": "#60a5fa"},
+                    {"range": [66, 100], "color": "#1d4ed8"},
                 ],
             },
             domain={"x": [0, 1], "y": [0, 1]},
         )
     )
 
-    # compact like a small meter
+    # Add needle (triangle or line)
+    fig.add_shape(
+        type="line",
+        x0=0.5, y0=0.0,
+        x1=x,  y1=y,
+        line=dict(color="black", width=4)
+    )
+
+    # Needle center dot
+    fig.add_shape(
+        type="circle",
+        x0=0.48, y0=-0.02,
+        x1=0.52, y1=0.02,
+        fillcolor="black",
+        line=dict(color="black")
+    )
+
     fig.update_layout(
         margin=dict(t=30, b=10, l=20, r=20),
-        height=220,
+        height=220
     )
 
     return fig
 
 
-
 def analyze_text(text: str, is_ai_generated: bool):
     text = text.strip()
     if not text: