getting object local direction?

1. using UnityEngine;
2. using System.Collections;
4. public class DrawSampleVecs : MonoBehaviour
5. {
6. void OnDrawGizmos()
7. {
8. Color color;
9. color = Color.green;
10. // local up
11. DrawHelperAtCenter(this.transform.up, color, 2f);
13. color.g -= 0.5f;
14. // global up
15. DrawHelperAtCenter(Vector3.up, color, 1f);
17. color = Color.blue;
18. // local forward
19. DrawHelperAtCenter(this.transform.forward, color, 2f);
21. color.b -= 0.5f;
22. // global forward
23. DrawHelperAtCenter(Vector3.forward, color, 1f);
25. color = Color.red;
26. // local right
27. DrawHelperAtCenter(this.transform.right, color, 2f);
29. color.r -= 0.5f;
30. // global right
31. DrawHelperAtCenter(Vector3.right, color, 1f);
32. }
34. private void DrawHelperAtCenter(
35. Vector3 direction, Color color, float scale)
36. {
37. Gizmos.color = color;
38. Vector3 destination = transform.position + direction * scale;
39. Gizmos.DrawLine(transform.position, destination);
40. }
42. }