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增加多指触控支持

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This commit is contained in:
shenjianxing 2025-03-25 15:22:32 +08:00
parent 292e1f0a3d
commit 08fc6b4b02
1 changed files with 148 additions and 31 deletions
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179
Assets/Scripts/Item/Show3DCamera.cs
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@ -43,6 +43,7 @@ public class Show3DCamera : MonoBehaviour
Transform target;
Vector3 targetPosition;
Vector3 targetRotate;
private float prevTouchDistance; // 存储上一帧双指距离
private void Awake()
{
instance = this;
@ -124,27 +125,42 @@ public class Show3DCamera : MonoBehaviour
UpdateCameraPosition(-1);
}
void Update()
{
if (targetPos != null && lockMove == false && EventSystem.current.IsPointerOverGameObject() == false)
{
// 优先处理三指操作
if (HandleThreeFingerDrag()) return;
bool isTouching = Input.touchCount > 0;
if (Input.GetMouseButtonDown(0))
// 新增：在旋转前先处理双指缩放
bool isZooming = false;
if (isTouching && Input.touchCount == 2)
{
HandleTouchZoom();
isZooming = true; // 标记正在缩放
}
// 处理触摸开始（排除双指情况）
if (isTouching && Input.touchCount == 1)
{
if (Input.GetTouch(0).phase == TouchPhase.Began)
{
mouseDownPosition = Input.GetTouch(0).position;
}
}
// 处理鼠标按下
else if (Input.GetMouseButtonDown(0))
{
// 记录鼠标按下时的位置
mouseDownPosition = Input.mousePosition;
}
// 按住鼠标左键时旋转相机
if (Input.GetMouseButton(0))
// 修改后的旋转条件（排除缩放状态）
if (!isZooming && (isTouching ? (Input.GetTouch(0).phase == TouchPhase.Moved) : Input.GetMouseButton(0)))
{
// 计算鼠标按下和抬起位置之间的距离
float distance = Vector2.Distance(mouseDownPosition, Input.mousePosition);
if (distance > 1f)
{
RotateCamera();
}
// 移除距离判断直接响应
RotateCamera();
}
// 鼠标滚轮缩放
@ -154,7 +170,6 @@ public class Show3DCamera : MonoBehaviour
ZoomCamera(scroll);
}
// 按住鼠标右键时移动目标点
if (Input.GetMouseButton(1))
{
@ -163,6 +178,91 @@ public class Show3DCamera : MonoBehaviour
DetectHoveredObject();
}
}
// 唯一的三指处理方法（返回bool用于阻断其他操作）
private bool HandleThreeFingerDrag()
{
if (Input.touchCount == 5)
{
// 计算三个触点的平均移动量
Vector2 totalDelta = Vector2.zero;
foreach (Touch t in Input.touches)
{
totalDelta += t.deltaPosition;
}
Vector2 delta = totalDelta / 3f;
// DPI自适应处理
float dpiScale = Screen.dpi == 0 ? 1 : Screen.dpi / 160f;
float sensitivity = moveSpeed * 0.1f / dpiScale;
// 应用移动阈值（2像素）
if (delta.magnitude > 2f)
{
// 调用修改后的移动方法
MoveTarget(delta.x * sensitivity, delta.y * sensitivity);
}
// 阻断其他触摸操作
return true;
}
return false;
}
// 新增双指缩放处理方法
// 类变量区添加
private float zoomSmoothVelocity; // 平滑速度缓存
[SerializeField] private float zoomSmoothTime = 0.1f; // 缩放平滑时间
private void HandleTouchZoom()
{
if (Input.touchCount == 2)
{
Touch touch0 = Input.GetTouch(0);
Touch touch1 = Input.GetTouch(1);
// 当双指操作时重置旋转相关变量
if (touch0.phase == TouchPhase.Began || touch1.phase == TouchPhase.Began)
{
yaw = transform.eulerAngles.y; // 保持当前旋转角度
pitch = transform.eulerAngles.x;
mouseDownPosition = Vector2.zero;
}
Vector2 touch0Pos = touch0.position;
Vector2 touch1Pos = touch1.position;
float currentDistance = Vector2.Distance(touch0Pos, touch1Pos);
// DPI自适应计算
float dpi = Screen.dpi == 0 ? 200 : Screen.dpi;
float zoomFactor = 0.01f * (200 / dpi); // 基准DPI为200
if (touch0.phase == TouchPhase.Began || touch1.phase == TouchPhase.Began)
{
prevTouchDistance = currentDistance;
zoomSmoothVelocity = 0; // 重置平滑速度
}
else if (touch0.phase == TouchPhase.Moved || touch1.phase == TouchPhase.Moved)
{
float deltaDistance = currentDistance - prevTouchDistance;
// 仅触摸缩放使用平滑
float targetDistance = distance - deltaDistance * zoomFactor;
targetDistance = Mathf.Clamp(targetDistance, distanceMin, distanceMax);
distance = Mathf.SmoothDamp(
distance,
targetDistance,
ref zoomSmoothVelocity,
zoomSmoothTime
);
offset = new Vector3(0, 0, -distance);
UpdateCameraPosition();
prevTouchDistance = currentDistance;
}
}
}
// 检测鼠标悬停的物体
public void DetectHoveredObject()
@ -252,11 +352,15 @@ public class Show3DCamera : MonoBehaviour
}
// 移动目标点
private void MoveTarget()
// 修改后的移动方法（统一处理输入源）
private void MoveTarget(float mouseX = 0, float mouseY = 0)
{
float mouseX = Input.GetAxis("Mouse X") * moveSpeed;
float mouseY = Input.GetAxis("Mouse Y") * moveSpeed;
// 自动判断输入源
if (Mathf.Approximately(mouseX, 0) && Mathf.Approximately(mouseY, 0))
{
mouseX = Input.GetAxis("Mouse X") * moveSpeed;
mouseY = Input.GetAxis("Mouse Y") * moveSpeed;
}
transform.Translate(new Vector3(-mouseX, -mouseY, 0));
targetPos += new Vector3(-mouseX, -mouseY, 0);
@ -270,31 +374,44 @@ public class Show3DCamera : MonoBehaviour
UpdateCameraPosition();
}
// 旋转相机
// 修改RotateCamera方法
private void RotateCamera()
{
// 获取鼠标移动量
float mouseX = Input.GetAxis("Mouse X") * rotateSpeed;
float mouseY = Input.GetAxis("Mouse Y") * rotateSpeed;
// 优先使用触摸输入
float deltaX = 0, deltaY = 0;
// 触屏处理
if (Input.touchCount == 1)
{
Touch touch = Input.GetTouch(0);
deltaX = touch.deltaPosition.x;
deltaY = touch.deltaPosition.y;
}
// 鼠标处理
else
{
deltaX = Input.GetAxis("Mouse X") * 10; // 保持原有灵敏度
deltaY = Input.GetAxis("Mouse Y") * 10;
}
// 应用DPI缩放（关键！）
float dpiScale = Screen.dpi == 0 ? 1 : Screen.dpi / 160f;
deltaX *= rotateSpeed * Time.deltaTime / dpiScale;
deltaY *= rotateSpeed * Time.deltaTime / dpiScale;
switch (type)
{
case RotationType.Orbit:
// 更新偏航角和俯仰角
yaw += mouseX;
pitch -= mouseY; // 注意：鼠标 Y 轴移动方向与俯仰角相反
pitch = Mathf.Clamp(pitch, pitchMinMax.x, pitchMinMax.y); // 限制俯仰角范围
// 更新相机位置
yaw += deltaX;
pitch -= deltaY;
pitch = Mathf.Clamp(pitch, pitchMinMax.x, pitchMinMax.y);
UpdateCameraPosition();
break;
case RotationType.Spherical:
// 完全自由的旋转（包含X/Y/Z三个轴向）
target.Rotate(Vector3.up, mouseX, Space.World); // 水平方向世界Y轴旋转
target.Rotate(Vector3.right, -mouseY, Space.Self); // 垂直方向本地X轴旋转
target.Rotate(Vector3.up, deltaX, Space.World);
target.Rotate(Vector3.right, -deltaY, Space.Self);
break;
}
}
public void ChangeMode(RotationType type)