gistfile1.txt

static function createPlane(tileWidth:int,tileDepth:int,spacing:int):Mesh
{
	var mesh:Mesh = new Mesh();
	var vertices:Vector3[] = new Vector3[(tileWidth + 1) * (tileDepth + 1)];
	var triangles:int[] = new int[tileWidth * tileDepth * 2 * 3];
	var uvs:Vector2[] = new Vector2[(tileWidth + 1) * (tileDepth + 1)];
	var i:int = 0;
	var x:int = 0;
	var z:int = 0;
	var uvOffset:float = 1.0 / (Mathf.Max(tileWidth,tileDepth) + 1);

	// Create vertices.
	for (z = 0; z < tileDepth + 1; z++)
	{	
		for (x = 0; x < tileWidth + 1; x++)
		{
			vertices[i] = Vector3(x * spacing,0,z * spacing);
			uvs[i] = Vector2(uvOffset * x, uvOffset * z);
			i++;
		}
	}

	i = 0;
	// Create triangles.
	for (z = 0; z < tileDepth; z++)
	{	
		for (x = 0; x < tileWidth; x++)
		{
			// Create two triangles at a time (a quad), so increment by 6 with each tile.
			// Figure out which indexes are for the four vertices around the current tile's quad.
			var idx1:int = z * (tileWidth + 1) + x;
			var idx2:int = (z + 1) * (tileWidth + 1) + x;
			var idx3:int = (z + 1) * (tileWidth + 1) + x + 1;
			var idx4:int = z * (tileWidth + 1) + x + 1;

			triangles[i] = idx1;
			triangles[i + 1] = idx2;
			triangles[i + 2] = idx3;
			triangles[i + 3] = idx1;
			triangles[i + 4] = idx3;
			triangles[i + 5] = idx4;

			i += 6;
		}
	}

	mesh.vertices = vertices;
	mesh.triangles = triangles;
	mesh.uv = uvs;
	mesh.Optimize();
	mesh.RecalculateBounds();
	mesh.RecalculateNormals();

	Debug.Log("bounds size: " + mesh.bounds.size);

	return mesh;
}