How to draw a line from point to point?

Question

Unity

The position of the line object is located at a different point, how to extend the line to another part?

It doesn't work like this:

Line.transform.position = FirstPoint.position;
        Line.SetPosition(1, SecondPoint.position);

Answer 1

connect the LineRenderer component

public LineRenderer lineRenderer;
    // Start is called before the first frame update
    void Start()
    {
        lineRenderer.positionCount = 3; //указываем кол-во точек
        Vector3 firstPoint = new Vector3(0, 0, 0);
        lineRenderer.SetPosition(0, firstPoint); //номер точки и её положение

        Vector3 secondPoint = new Vector3(5, 5, 0);
        lineRenderer.SetPosition(1, secondPoint);

        Vector3 thirdPoint = new Vector3(15, 5, 0);
        lineRenderer.SetPosition(2, thirdPoint);
    }