Population density generator using Perlin Noise for a 1000 u² terrain and 100 u³ blocs

PopulationDensityGenerator.cs

using UnityEngine;
using System.Collections;
using System.Collections.Generic;

public class Generator : MonoBehaviour {

	public int height = 1000;
	public int width = 1000;

	public float noiseScale = 500.0f;
	public int footprint = 100;

	float seed = 0;
	List<GameObject> objects = new List<GameObject> ();

	void Start () {
		seed = Random.Range (0, 100);
	}

	void Update () {

		bool update = Input.GetKeyDown ("space");
		if (update) {
			this.Generate ();
		}

	}

	void Generate () {

		foreach (GameObject o in objects) {
			Destroy (o);
		}

		for (int h = 0; h < height; h += footprint) {
			for (int w = 0; w < width; w += footprint) {

				float buildingHeight = Mathf.PerlinNoise (w/noiseScale + seed, h/noiseScale + seed) * 10;

				GameObject cube = GameObject.CreatePrimitive (PrimitiveType.Cube);
				cube.transform.localScale += new Vector3 (footprint, buildingHeight * footprint, footprint);
				cube.transform.position = new Vector3 (h, 0, w);

				objects.Add (cube);
			}
		}

	}
}