添加字段set get

src/DatabaseServices/PointLight.ts

@@ -32,6 +32,18 @@ export class PointLight extends Light
         this.m_Distance = 100;
     }
 
+    get Decay(): number
+    {
+        return this.m_Decay;
+    }
+    set Decay(decay: number)
+    {
+        this.WriteAllObjectRecord();
+        this.m_Decay = decay;
+
+        this.Update();
+    }
+
     protected m_Light: THREE.PointLight;
     Draw(renderType: RenderType = RenderType.Wireframe): Object3D
     {