Update app.py

app.py

@@ -348,6 +348,28 @@ class LightingControl3D(gr.HTML):
                 });
                 const ledPanel = new THREE.Mesh(new THREE.BoxGeometry(0.6, 0.6, 0.1), ledMat);
                 lightGroup.add(ledPanel);
+
+                // --- NEW CODE START: Add Light Rays ---
+                // Create a cone to simulate the light beam
+                const beamGeometry = new THREE.ConeGeometry(0.45, 4, 32, 1, true); // base radius, height, radialSegments, openEnded
+                // Translate the geometry so the tip of the cone sits at the light source
+                beamGeometry.translate(0, 2, 0); 
+                // Rotate to point along the Z-axis (which looks at the target)
+                beamGeometry.rotateX(Math.PI / 2);
+
+                const beamMaterial = new THREE.MeshBasicMaterial({
+                    color: 0xffffff,
+                    transparent: true,
+                    opacity: 0.15, // Low opacity for "ray" effect
+                    side: THREE.DoubleSide,
+                    depthWrite: false, // Prevents occlusion issues
+                    blending: THREE.AdditiveBlending // Makes it look like light
+                });
+                
+                const lightBeam = new THREE.Mesh(beamGeometry, beamMaterial);
+                lightBeam.position.set(0, 0, 0.1); // Slightly offset in front of panel
+                lightGroup.add(lightBeam);
+                // --- NEW CODE END ---
                 
                 const spotLight = new THREE.SpotLight(0xffffff, 10, 10, Math.PI / 3, 1, 1);
                 spotLight.position.set(0, 0, -0.05);