View difference between Paste ID: ArfTZjpx and PvHuQVjT

 using UnityEngine;
 using System.Collections;
 
 public class TerrainStuff : MonoBehaviour {
 
 	Terrain terrain;
 
 	// Use this for initialization
-	void Start () {
+
 	// frequencies
 	float f1,f2;
 
 	// heights
 	float h1,h2;
 
 	void OnGUI()
 	{
 		GUILayout.Label("Frequency 1: "+f1);
 		f1 = GUILayout.HorizontalSlider(f1, .001f, 1f);
-				heights[x,z] = Mathf.Sin ( x*0.05f ) * 0.2f + 0.2f;
+
 		GUILayout.Label("Height 1: "+h1);
-			 	if (z==0) { Debug.Log(heights[x,z]); }
+		h1 = GUILayout.HorizontalSlider(h1, .01f, 1f);
 
 		GUILayout.Label("Frequency 2: "+f2);
 		f2 = GUILayout.HorizontalSlider(f2, .001f, 1f);
 
 		GUILayout.Label("Height 2: "+h2);
 		h2 = GUILayout.HorizontalSlider(h2, .01f, 1f);
 
 
 
 	}
 
 
 	void SetTerrainHeights () {
 
 		terrain = GetComponent<Terrain>();
 
 		TerrainData data = terrain.terrainData;
 
 		float[,] heights = data.GetHeights(0, 0, data.heightmapWidth, data.heightmapHeight);
 
 		for( int x=0; x<512; ++x)
 		{
 			for( int z=0; z<512; ++z)
 			{
 				// resuts
 				float r1 =  Mathf.Sin ( x*f1 ) * h1 + h1;
 				float r2 =  Mathf.Sin ( z*f2 ) * h2 + h2;
 
 				heights[x,z] = r1 + r2;
 
 			}
 		}
 
 		data.SetHeights(0, 0, heights);
 
 	}
 
 	void Update()
 	{
 		SetTerrainHeights();
 	}
 
 
 }