平移工具算法非常跳跃

寻找一些帮助，看看我如何使这个算法更好一点 . 所以我有一些平移工具的代码，根据用户拖动鼠标移动相机来移动相机 . 然而，除非它是在非常短暂的拖拽中完成的，否则它真的很蠢 . 即场景中的物体似乎会振动，这更可能是相机和画布“振动”而不是物体本身 .

该代码通过使用 SystemEvent 方法 OnPointerDown 和 OnPointerUp 切换 dragging 布尔值并在世界坐标中分配 MouseStart Vector3以及 CameraStart Vector3 .

public void OnPointerDown(PointerEventData EventData)
{
    if (!dragging)
    {
        dragging = true;
        MouseStart = new Vector3(Camera.main.ScreenToWorldPoint(Input.mousePosition).x, Camera.main.ScreenToWorldPoint(Input.mousePosition).y, 0f);
        CameraStart = TheCamera.transform.position;
    }
}

public void OnPointerUp(PointerEventData EventData)
{
    if (dragging)
    {
        dragging = false;
    }
}

然后在 dragging 变量为真的更新循环中，基于当前鼠标位置与原始鼠标位置相比确定 xChange 和 yChange 浮点值，然后根据这些调整相机位置 . 我的思维过程是因为它相对于一个固定的 MouseStart （因为它只在点击指针并拖动= 0的单帧中更改）如果我要拖动然后说保持鼠标静止，那么就会有没有坐标的变化，因为它会反复将相机放在相同的位置 . 完整代码如下所示：

private bool dragging;

private string CurrentTool;

private ButtonController[] DrawingTools;

public Camera TheCamera;

public Vector3 MouseStart;
public Vector3 CameraStart;

public float sensitivity;

// Use this for initialization
void Start () {
    TheCamera = FindObjectOfType<Camera>();
    DrawingTools = FindObjectsOfType<ButtonController>();
}

// Update is called once per frame
void Update () {
    for (int i = 0; i < DrawingTools.Length; i++)
    {
        if (DrawingTools[i].Pressed)
        {
            CurrentTool = DrawingTools[i].gameObject.name;
        }
    }

    if (dragging && CurrentTool == "PanTool Button")
    {
        float xChange;
        float yChange;
        Vector3 MousePosition = Camera.main.ScreenToWorldPoint(Input.mousePosition);

        if (MousePosition.x > MouseStart.x)
        {
            xChange = -Mathf.Abs(MousePosition.x - MouseStart.x);
        }
        else
        {
            xChange = Mathf.Abs(MousePosition.x - MouseStart.x);
        }

        if (MousePosition.y > MouseStart.y)
        {
            yChange = -Mathf.Abs(MousePosition.y - MouseStart.y);
        }
        else
        {
            yChange = Mathf.Abs(MousePosition.y - MouseStart.y);
        }

        TheCamera.transform.position = new Vector3(CameraStart.x + xChange*sensitivity, CameraStart.y + yChange*sensitivity, CameraStart.z);
    }
}

public void OnPointerDown(PointerEventData EventData)
{
    if (!dragging)
    {
        dragging = true;
        MouseStart = new Vector3(Camera.main.ScreenToWorldPoint(Input.mousePosition).x, Camera.main.ScreenToWorldPoint(Input.mousePosition).y, 0f);
        CameraStart = TheCamera.transform.position;
    }
}

public void OnPointerUp(PointerEventData EventData)
{
    if (dragging)
    {
        dragging = false;
    }
}

任何帮助表示赞赏，谢谢 .

编辑：只是为了澄清这是一个二维环境