unity trace line code example
Example 1: unity drawline
public Transform target;
void OnDrawGizmosSelected()
{
if (target != null)
{
// Draws a blue line from this transform to the target
Gizmos.color = Color.blue;
Gizmos.DrawLine(transform.position, target.position);
}
}
Example 2: create line in unity
// you need the LineRenderer component in your object
var line = gameObject.AddComponent<LineRenderer>();
line.SetPosition(0, startingPoint);
line.SetPosition(1, middlePoint);
line.SetPosition(2, endPoint);