unity触摸屏实现移动旋转缩放
时间: 2023-07-11 11:20:53 浏览: 32
在Unity中,可以通过使用Input类来检测触摸屏的输入,并使用Transform组件来实现移动、旋转和缩放。以下是一个简单的实现示例:
移动:
```csharp
void Update()
{
if (Input.touchCount == 1 && Input.GetTouch(0).phase == TouchPhase.Moved)
{
Vector2 touchDeltaPosition = Input.GetTouch(0).deltaPosition;
transform.Translate(-touchDeltaPosition.x * speed, -touchDeltaPosition.y * speed, 0);
}
}
```
旋转:
```csharp
void Update()
{
if (Input.touchCount == 2)
{
Touch touchZero = Input.GetTouch(0);
Touch touchOne = Input.GetTouch(1);
Vector2 touchZeroPrevPos = touchZero.position - touchZero.deltaPosition;
Vector2 touchOnePrevPos = touchOne.position - touchOne.deltaPosition;
float prevTouchDeltaMag = (touchZeroPrevPos - touchOnePrevPos).magnitude;
float touchDeltaMag = (touchZero.position - touchOne.position).magnitude;
float deltaMagnitudeDiff = prevTouchDeltaMag - touchDeltaMag;
transform.Rotate(0, 0, deltaMagnitudeDiff * rotationSpeed);
}
}
```
缩放:
```csharp
void Update()
{
if (Input.touchCount == 2)
{
Touch touchZero = Input.GetTouch(0);
Touch touchOne = Input.GetTouch(1);
Vector2 touchZeroPrevPos = touchZero.position - touchZero.deltaPosition;
Vector2 touchOnePrevPos = touchOne.position - touchOne.deltaPosition;
float prevTouchDeltaMag = (touchZeroPrevPos - touchOnePrevPos).magnitude;
float touchDeltaMag = (touchZero.position - touchOne.position).magnitude;
float deltaMagnitudeDiff = prevTouchDeltaMag - touchDeltaMag;
Vector3 scale = transform.localScale;
scale += new Vector3(deltaMagnitudeDiff * scaleSpeed, deltaMagnitudeDiff * scaleSpeed, deltaMagnitudeDiff * scaleSpeed);
transform.localScale = scale;
}
}
```
其中,speed、rotationSpeed和scaleSpeed是自定义的参数,用于控制移动、旋转和缩放的速度。您可以根据您的需求进行自定义调整。