约束 X 和 Y 可拖动区域

Question

我正在尝试限制屏幕上某个对象的可拖动区域，但我的代码中出现了一些错误 - 我现在尽量保持简单，只需重置最大 x 或 y如果对象被拖到这些限制之外，但我仍然没有取得任何成功。我真的需要一些帮助来理解如何做到这一点。

    float maxDragX = 1000;
    float maxDragY = 700;

    Vector3 mousePosition = new Vector3(eventData.position.x, eventData.position.y, distance);

    transform.position = mousePosition;                                 // set object coordinates to mouse coordinates

    if(transform.parent.gameObject == partsPanel)
    {
        transform.SetParent(dragLayer.transform);                       // pop object to draglayer to move object out of partsPanel
    }

    if(transform.parent.gameObject == buildBoard)
    {
        // Constrain drag to boundaries of buildBoard Code
        if(transform.position.x >= maxDragX)
            transform.position.x = new Vector3(maxDragX, mousePosition.y, distance);

        if(transform.position.y >= maxDragY)
            transform.position.y = new Vector3(mousePosition.x, maxDragY, distance);
    }

Answer 1

您正在尝试将 Vector3 分配给 float

这里

transform.position.x = new Vector3(maxDragX, mousePosition.y, distance);

这里

transform.position.y = new Vector3(mousePosition.x, maxDragY, distance);

Answer 2

您不能为 position.x 或 position.y 设置向量，它们只是浮动的。你必须完全改变立场

 float maxDragX = 1000;
    float maxDragY = 700;

    Vector3 mousePosition = new Vector3(eventData.position.x, eventData.position.y, distance);

    transform.position = mousePosition;                                 // set object coordinates to mouse coordinates

    if(transform.parent.gameObject == partsPanel)
    {
        transform.SetParent(dragLayer.transform);                       // pop object to draglayer to move object out of partsPanel
    }

    if(transform.parent.gameObject == buildBoard)
    {
        // Constrain drag to boundaries of buildBoard Code
        if(transform.position.x >= maxDragX)
            transform.position = new Vector3(maxDragX, mousePosition.y, distance);

        if(transform.position.y >= maxDragY)
            transform.position = new Vector3(mousePosition.x, maxDragY, distance);
    }

约束 X 和 Y 可拖动区域

Constraining X and Y Draggable Area

c#

unity3d

transform

drag