using UnityEngine;

[RequireComponent(typeof(Camera))]
public class FreeCamera : MonoBehaviour
{
	public float m_MoveSpeed = 0f;
	public float m_RotateSpeed = 0f;
	public KeyCode m_ForwardButton = KeyCode.W;
	public KeyCode m_BackwardButton = KeyCode.S;
	public KeyCode m_RightButton = KeyCode.D;
	public KeyCode m_LeftButton = KeyCode.A;
	public KeyCode m_UpButton = KeyCode.Q;
	public KeyCode m_DownButton = KeyCode.E;

	void Start ()
	{
		Camera.main.depthTextureMode = DepthTextureMode.Depth;
		QualitySettings.antiAliasing = 8;
	}
	void Update ()
	{
		// translation
		{
			Vector3 dir = Vector3.zero;
			Move (m_ForwardButton, ref dir, transform.forward);
			Move (m_BackwardButton, ref dir, -transform.forward);
			Move (m_RightButton, ref dir, transform.right);
			Move (m_LeftButton, ref dir, -transform.right);
			Move (m_UpButton, ref dir, transform.up);
			Move (m_DownButton, ref dir, -transform.up);
			transform.position += dir * m_MoveSpeed * Time.deltaTime;
		}
		// rotation
		{
			if (Input.GetMouseButton (0))
			{
				Vector3 eulerAngles = transform.eulerAngles;
				eulerAngles.x += -Input.GetAxis("Mouse Y") * 359f * m_RotateSpeed;
				eulerAngles.y += Input.GetAxis("Mouse X") * 359f * m_RotateSpeed;
				transform.eulerAngles = eulerAngles;
			}
		}
	}
	void Move (KeyCode key, ref Vector3 moveTo, Vector3 dir)
	{
		if (Input.GetKey (key))
			moveTo = dir;
	}
	void OnGUI()
	{
		GUI.Label (new Rect (10, 10, 250, 25), "Scanner Demo");
	}
}