如何在游戏对象移动时移动Line Renderer [英] How to move a Line Renderer as its game object moves

问题描述

我创建了一个空的游戏对象，并通过脚本向其中添加了Line Renderer组件.我以为，一旦我调整了游戏对象的位置，对于线切割器也将同样如此，但事实并非如此.

I created an empty game object and added a Line Renderer component to it through a script. I thought that once I adjust the position of the game object, it would do likewise for the line rendeder, but that is not the case.

我尝试了useWorldSpace = false，但是它完全改变了位置，使以下点成为一条直线，尽管我能够将游戏对象移动到该直线上.

I tried useWorldSpace = false but it totally changed the positions making the following points a straight line, though I was able to move the game object to to the line.

public Vector3 beginPos = new Vector3 (-1.0f, -1.0f, 0);
public Vector3 endPos = new Vector3 (1.0f, 1.0f, 0);

有没有一种方法可以将点转换为我更熟悉的输入(这样，像上述点那样的点就不会形成直线)?还是我应该以其他方式来解决问题?我愿意接受另一种方法.

Is there a way I can convert points to input what I am more familiar with (so that points like the above points don't create a straight line) or should I be approaching the problem in a different way? I am open to a different approach.

更新

我想我留下了一个导入细节.我将使用由线渲染器制作的线来创建形状.因此，我需要能够四处移动线条以移动形状，这样我就不必总是重新计算线条的起点和终点.

I think I left an import detail. I'll be using lines made with line renderer to create shapes. So I need to be able to be able to move the lines around to move the shapes so I don't have to always recalculate the start and end points for the lines.

推荐答案

您只需要对其应用偏移即可.在Start函数中获取线条渲染器位置+ GameObject的当前位置.将该偏移量应用于Update函数中的LineRender.

You just need to apply an offset to it. Get the line renderer position + the current position of the GameObject in the Start function. Apply that offset to the LineRender in the Update function.

public Vector3 beginPos = new Vector3(-1.0f, -1.0f, 0);
public Vector3 endPos = new Vector3(1.0f, 1.0f, 0);

Vector3 beginPosOffset;
Vector3 endPosOffset;

LineRenderer diagLine;

void Start()
{
    diagLine = gameObject.AddComponent<LineRenderer>();
    diagLine.material = new Material(Shader.Find("Sprites/Default"));
    diagLine.startColor = diagLine.endColor = Color.green;
    diagLine.startWidth = diagLine.endWidth = 0.15f;

    diagLine.SetPosition(0, beginPos);
    diagLine.SetPosition(1, endPos);

    //Get offset
    beginPosOffset = transform.position - beginPos;
    endPosOffset = transform.position - endPos;
}

void Update()
{

    //Calculate new postion with offset
    Vector3 newBeginPos = transform.position + beginPosOffset;
    Vector3 newEndPos = transform.position + endPosOffset;

    //Apppy new position with offset
    diagLine.SetPosition(0, newBeginPos);
    diagLine.SetPosition(1, newEndPos);
}

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