unity 三指移动旋转代码
时间: 2023-10-05 21:07:38 浏览: 40
以下是Unity中实现三指移动和旋转的示例代码:
```csharp
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class ThreeFingerInput : MonoBehaviour
{
private float rotationSpeed = 1.0f;
private float moveSpeed = 0.2f;
private Vector3 prevPos1;
private Vector3 prevPos2;
private Vector3 prevPos3;
void Update()
{
// Check for three fingers touching the screen
if (Input.touchCount == 3)
{
// Get the three touches
Touch touch1 = Input.GetTouch(0);
Touch touch2 = Input.GetTouch(1);
Touch touch3 = Input.GetTouch(2);
// Calculate the distance between the touches in the previous frame
float prevDist1 = Vector3.Distance(prevPos1, prevPos2);
float prevDist2 = Vector3.Distance(prevPos1, prevPos3);
float prevDist3 = Vector3.Distance(prevPos2, prevPos3);
// Calculate the distance between the touches in the current frame
float dist1 = Vector3.Distance(touch1.position, touch2.position);
float dist2 = Vector3.Distance(touch1.position, touch3.position);
float dist3 = Vector3.Distance(touch2.position, touch3.position);
// Calculate the change in distance between the previous and current frames
float deltaDist1 = dist1 - prevDist1;
float deltaDist2 = dist2 - prevDist2;
float deltaDist3 = dist3 - prevDist3;
// Rotate the camera based on the change in distance between the touches
transform.Rotate(deltaDist1 * rotationSpeed, deltaDist2 * rotationSpeed, deltaDist3 * rotationSpeed, Space.World);
// Move the camera based on the average position of the touches
Vector3 touchPos = (touch1.position + touch2.position + touch3.position) / 3.0f;
Vector3 prevPos = (prevPos1 + prevPos2 + prevPos3) / 3.0f;
Vector3 deltaPos = touchPos - prevPos;
transform.Translate(deltaPos * moveSpeed, Space.World);
// Store the positions of the touches for the next frame
prevPos1 = touch1.position;
prevPos2 = touch2.position;
prevPos3 = touch3.position;
}
else
{
// Reset the previous touch positions if there are not three touches
prevPos1 = Vector3.zero;
prevPos2 = Vector3.zero;
prevPos3 = Vector3.zero;
}
}
}
```
该代码使用Unity的Input类来获取触摸输入,然后根据触摸点的位置和移动距离来旋转和移动场景中的物体。它使用三个触摸点来实现旋转和移动,需要在屏幕上同时触摸三个点才能生效。