Stratasys-450mc-VR/Assets/Scripts/Part Labels/PartLabel.cs

using UnityEngine;

namespace Part_Labels
{
    public class PartLabel : MonoBehaviour
    {
        [SerializeField] private GameObject targetPart;
        [SerializeField] private Vector3 canvasLineOffset = new Vector3(0, -0.04f, 0);
        private LineRenderer lineRenderer;
        private Canvas canvas;

        private void Start()
        {
            lineRenderer = gameObject.GetComponentInChildren<LineRenderer>();
            canvas = gameObject.GetComponentInChildren<Canvas>();
            Deactivate();
        }

        [ExecuteAlways]
        public void Activate()
        {
            lineRenderer.gameObject.SetActive(true);
            lineRenderer.enabled = true;
            canvas.gameObject.SetActive(true);
            Vector3 targetPos = targetPart.transform.position;

            Vector3[] positions = new Vector3[2];
            positions[0] = canvas.transform.position+canvasLineOffset;
            positions[1] = targetPos;
            lineRenderer.SetPositions(positions);
        }

        [ExecuteAlways]
        public void Deactivate()
        {
            canvas.gameObject.SetActive(false);
            lineRenderer.gameObject.SetActive(false);
        }

    }
}