视角自动摆动，模拟漂浮状态

src/utils/createTravelScene.ts

@@ -496,6 +496,7 @@ export function createTravelScene(container: HTMLElement): TravelSceneController
   let started = false
   let targetSpeed: number = APP_CONFIG.animation.defaultSpeed
   let currentSpeed = 0
+  let accumulatedWobbleTime = 0
   let animationFrameId = 0
   let disposed = false
 
@@ -821,13 +822,31 @@ export function createTravelScene(container: HTMLElement): TravelSceneController
       material.uniforms.uTime.value = elapsed + index * 0.37
     })
 
-    travelRoot.rotation.z = pointerCurrent.x * 0.03
+    // 自动视角随机摆动，摆动速度跟随当前速度 (currentSpeed) 动态变化
-    travelRoot.position.x = -pointerCurrent.x * 0.8
+    // 修复抖动：通过 deltaSeconds 累加时间，而不是直接用 elapsed 乘以可变的速度，避免相位突变
-    travelRoot.position.y = -pointerCurrent.y * 0.45
+    accumulatedWobbleTime += deltaSeconds * (0.8 + currentSpeed * 2.0)
     
-    camera.position.x = pointerCurrent.x * APP_CONFIG.interaction.maxOffset * 2.8
+    // 利用多个不同频率的三角函数叠加，生成平滑且看似随机的摆动
-    camera.position.y = pointerCurrent.y * APP_CONFIG.interaction.maxOffset * 1.8
+    const wobbleX = (Math.sin(accumulatedWobbleTime * 0.8) + Math.sin(accumulatedWobbleTime * 1.7 + 2.1) + Math.sin(accumulatedWobbleTime * 0.5 + 4.3)) / 3
-    camera.lookAt(pointerCurrent.x * 1.5, pointerCurrent.y * 0.8, -30)
+    const wobbleY = (Math.cos(accumulatedWobbleTime * 0.9) + Math.cos(accumulatedWobbleTime * 1.5 + 1.2) + Math.cos(accumulatedWobbleTime * 0.6 + 3.5)) / 3
+    
+    // 基础摆动幅度 + 随速度增加的额外幅度 (显著增加摆动幅度)
+    const wobbleAmpX = 0.8 + currentSpeed * 0.8
+    const wobbleAmpY = 0.5 + currentSpeed * 0.5
+
+    // 综合鼠标位置与自动摆动
+    const viewX = pointerCurrent.x + wobbleX * wobbleAmpX
+    const viewY = pointerCurrent.y + wobbleY * wobbleAmpY
+
+    // 较大幅度地影响场景根节点，增加整体动感
+    travelRoot.rotation.z = viewX * 0.06
+    travelRoot.position.x = -viewX * 1.8
+    travelRoot.position.y = -viewY * 1.0
+
+    // 加大相机的偏移幅度和观察点偏移
+    camera.position.x = viewX * APP_CONFIG.interaction.maxOffset * 4.5
+    camera.position.y = viewY * APP_CONFIG.interaction.maxOffset * 3.0
+    camera.lookAt(viewX * 2.5, viewY * 1.5, -30)
 
     renderer.render(scene, camera)
     animationFrameId = window.requestAnimationFrame(render)