Unity相机在碰撞中发抖

Question

该脚本可以完全正常地正常工作，除非缩放过多并且SphereCast与网格碰撞。当它碰到网格物体时，我希望相机停下来，而不要尝试通过网格物体。See demonstration here

     if(Input.touchCount == 2){
         Touch first = Input.GetTouch(0);
         Touch second = Input.GetTouch(1);

         origin = mainCamera.transform.position;
         direction = mainCamera.transform.forward;
         RaycastHit hit;
         if(Physics.SphereCast(origin, sphereRadius, direction, out hit, maxDistance)){
             inCollision = true;
         }
         else{
             inCollision = false;
         }

         if(first.phase == TouchPhase.Began || second.phase == TouchPhase.Began){
             initialDistance = Vector3.Distance(first.position, second.position);
         }
         if(first.phase == TouchPhase.Moved || second.phase == TouchPhase.Moved){
             movedDistance = Vector3.Distance(first.position, second.position) - initialDistance;
             if(inCollision){
                 movedDistance = -Mathf.Abs(movedDistance);
             }
             mainCamera.transform.localPosition = new Vector3(0, 0, mainCamera.transform.localPosition.z + movedDistance * zoomSensitivity * Time.deltaTime);
             initialDistance = Vector3.Distance(first.position, second.position);
         }
     }

我试图：当SphereCast击中网格时，将moveDistance设置为0；否则，将其设置为0。将mainCamera.transform.localPosition.z夹在mainCamera.transform.localPosition.z上，但仅在SphereCast命中网格时才可，因此z的缩放不会超过其当前值。

Answer 1

正如您一直以来所说的前进，碰撞，后退，不再碰撞，前进等。>

---

您可能宁愿不向后移动，但如果您would

移动并且在这种情况下完全不移动，请检查您是否[是否碰撞：

if(first.phase == TouchPhase.Began || second.phase == TouchPhase.Began)
{
     initialDistance = Vector3.Distance(first.position, second.position);
}
else if(first.phase == TouchPhase.Moved || second.phase == TouchPhase.Moved)
{
     movedDistance = Vector3.Distance(first.position, second.position) - initialDistance;

     // Only check until here if you WOULD collide
     origin = mainCamera.transform.position;
     var targetPosition = origin + mainCamera.transform.forward * movedDistance * Time.deltaTime * zoomSensitivity;
     direction = mainCamera.transform.forward;

     // only move if there is no collision
     if(!Physics.SphereCast(origin, sphereRadius, direction, out var hit, maxDistance))
     {
         mainCamera.position = targetPosition;
     }

     initialDistance = Vector3.Distance(first.position, second.position);
}