Model Viewer

using UnityEngine;
using System.Collections;

public class Viewer : MonoBehaviour {
	public Transform sopwith;
	public Transform fokker;
	public Light keyLight;
	public Light fillLight;
	public float sensitivity;

	private Transform thisTransform;
    private Vector3 previousMousePos;
	private Vector3 deltaPos;
	private float cameraDistance;
	private float keyLightStrength;
	private float fillLightStrenth;
	private float ambientLightStrength;
	private bool overGUI;
	private Rect sliderRect;


	void Awake () {
		thisTransform = sopwith;
		fokker.gameObject.SetActiveRecursively (false);
		cameraDistance = 75.0f;
		keyLightStrength = PlayerPrefs.GetFloat ("Viewer-KeyIntensity", 1.0f);
		fillLightStrenth = PlayerPrefs.GetFloat ("Viewer-FillIntensity", 0.2f);
		ambientLightStrength = PlayerPrefs.GetFloat ("Viewer-AmbientIntensity", 0.2f);
		sliderRect = new Rect(25, Screen.height - 175, 200, 175	);
	}

	void OnDisable () {
		PlayerPrefs.SetFloat ("Viewer-KeyIntensity", keyLightStrength);
		PlayerPrefs.SetFloat ("Viewer-FillIntensity", fillLightStrenth);
		PlayerPrefs.SetFloat ("Viewer-AmbientIntensity", ambientLightStrength);
	}

	void OnGUI () {
		GUILayout.BeginArea (new Rect(25, 25, 80, 200));
		if (GUILayout.Button ("Sopwith")) {
			thisTransform = sopwith;
//			thisTransform.eulerAngles = Vector3.zero;
			sopwith.gameObject.SetActiveRecursively (true);
			fokker.gameObject.SetActiveRecursively (false);
		}
		if (GUILayout.Button ("Fokker")) {
			thisTransform = fokker;
//			thisTransform.eulerAngles = Vector3.zero;
			fokker.gameObject.SetActiveRecursively (true);
			sopwith.gameObject.SetActiveRecursively (false);
		}
		if (GUILayout.Button ("Reset")) {
			thisTransform.eulerAngles = Vector3.zero;
		}
		GUILayout.EndArea ();

		GUILayout.BeginArea (sliderRect);
		GUILayout.Label ("Key Light Intensity: " + keyLight.intensity);
		GUILayout.BeginHorizontal ();
		GUILayout.Label ("0", GUILayout.MaxWidth(10));
		keyLightStrength = GUILayout.HorizontalSlider (keyLightStrength, 0.0f, 1.0f);
		GUILayout.Label ("1", GUILayout.MaxWidth(10));
		keyLight.intensity = keyLightStrength;
		GUILayout.EndHorizontal ();
		GUILayout.Label ("Fill Light Intensity: " + fillLight.intensity);
		GUILayout.BeginHorizontal ();
		GUILayout.Label ("0", GUILayout.MaxWidth(10));
		fillLightStrenth = GUILayout.HorizontalSlider (fillLightStrenth, 0.0f, 1.0f);
		GUILayout.Label ("1", GUILayout.MaxWidth(10));
		fillLight.intensity = fillLightStrenth;
		GUILayout.EndHorizontal ();
		GUILayout.Label ("Ambient Light Intensity: " + (ambientLightStrength * 255));
		GUILayout.BeginHorizontal ();
		GUILayout.Label ("0", GUILayout.MaxWidth(10));
		ambientLightStrength = GUILayout.HorizontalSlider (ambientLightStrength, 0.0f, 1.0f);
		GUILayout.Label ("1", GUILayout.MaxWidth(10));
		RenderSettings.ambientLight = new Color (ambientLightStrength, ambientLightStrength, ambientLightStrength);
		GUILayout.EndHorizontal ();
		GUILayout.EndArea ();

		GUILayout.BeginArea (new Rect(Screen.width - 105, 25, 80, 200));
		if (GUILayout.Button ("Close View")) cameraDistance = 75;
		if (GUILayout.Button ("RR1")) cameraDistance = 150;
		if (GUILayout.Button ("RR2")) cameraDistance = 300;
		if (GUILayout.Button ("RR3")) cameraDistance = 450;
		if (GUILayout.Button ("RR4")) cameraDistance = 600;

		Vector3 newPosition = Vector3.zero;
		newPosition.z = cameraDistance;
		Camera.main.transform.position = newPosition;
		GUILayout.EndArea ();

//		if (sliderRect.Contains (Input.mousePosition)) {
////		if (Input.GetMouseButton(0) && sliderRect.Contains (Input.mousePosition)) {
////			overGUI = true;
////			Debug.Log ("Over GUI");
//		} else {
//			overGUI = false;
////			Debug.Log ("NOT Over GUI");
//		}

		if (sliderRect.Contains (Event.current.mousePosition)) {
//		if (Input.GetMouseButton(0) && sliderRect.Contains (Input.mousePosition)) {
			overGUI = true;
//			Debug.Log ("Over GUI");
		} else {
			overGUI = false;
//			Debug.Log ("NOT Over GUI");
		}
//		Debug.Log ("Rect: " + sliderRect.x + ", " + sliderRect.y + ", " +  (sliderRect.x + sliderRect.width) + ", " +  (sliderRect.y + sliderRect.height));
//		Debug.Log ("-----Event.current.mousePosition: " + Event.current.mousePosition);
//	    Rect guiRect = GUILayoutUtility.GetLastRect();
//	    if (Event.current != null && Event.current.isMouse) {
//	    if (Event.current != null && Event.current.type == EventType.Repaint && Event.current.isMouse) {
//	        overGUI = sliderRect.Contains(Input.mousePosition);
//			Debug.Log (overGUI);
//	    }
	}

	void  Update () {
		if (!overGUI) {
//		if (sliderRect.Contains (Input.mousePosition)) {
////		if (Input.GetMouseButton(0) && sliderRect.Contains (Input.mousePosition)) {
//			Debug.Log ("Over GUI");
//		} else {
//			Debug.Log ("NOT Over GUI");

			if (Input.GetMouseButtonDown(0)) {
				previousMousePos = Input.mousePosition;
			} else {
				deltaPos = Vector3.zero;
			}

			if (Input.GetMouseButton(0)) {
				deltaPos = Input.mousePosition - previousMousePos;
				previousMousePos = Input.mousePosition;
				Vector3 newRotation = Vector3.zero;
				newRotation.x = -deltaPos.y * sensitivity;
				newRotation.y = -deltaPos.x * sensitivity;
				thisTransform.Rotate (newRotation, Space.World);
			}
		}
//		Debug.Log ("Input.mousePosition: " + Input.mousePosition);
//		Debug.Log ("Rect: " + sliderRect.x + ", " + sliderRect.y + ", " +  (sliderRect.x + sliderRect.width) + ", " +  (sliderRect.y + sliderRect.height));

//		if (!overGUI) {
//			if (Input.GetMouseButtonDown(0)) {
//				previousMousePos = Input.mousePosition;
//			} else {
//				deltaPos = Vector3.zero;
//			}
//
//			if (Input.GetMouseButton(0)) {
//				deltaPos = Input.mousePosition - previousMousePos;
//				previousMousePos = Input.mousePosition;
//				Vector3 newRotation = Vector3.zero;
//				newRotation.x = -deltaPos.y * sensitivity;
//				newRotation.y = -deltaPos.x * sensitivity;
//				thisTransform.Rotate (newRotation, Space.World);
//			}
//		}
	}
}