Looping Cubes & Adding Material (Away3D) - actionscript-3

Question

I'm trying to create a loop of cubes and apply a ColorMaterial to the surface. The main actionscript class has the following method for creating the loop. There is an external class file called Building which is responsible for the shape and ColorMaterial. Unfortunately, I seem to be doing something wrong. Flash Builder is not showing any warnings or errors. But when I run a test, all I get is black screen.
private function buildCity():void
{
var citySize:int = 1800;
var buildingSize:int = 100;
var roadSize:int = 50;
// Loop across in the x direction and again in the z direction
for(var cityX:int=citySize/2;cityX<citySize/2;cityX+=buildingSize+roadSize)
{
for(var cityZ:int=citySize/2;cityZ<citySize/2;cityZ+=buildingSize+roadSize)
{
// Create buildings
var building:Building = new Building();
// Position it
building.x = cityX;
building.z = cityZ;
// Add to the scene
view.scene.addChild(building);
}
}
}
The Building class responsible for the shape and material
package
{
import away3d.entities.Mesh;
import away3d.materials.ColorMaterial;
import away3d.primitives.CubeGeometry;
public class Building extends Mesh
{
public function Building()
{
super(new CubeGeometry(50,100,50));
// Make a material
material = new ColorMaterial(Math.random()*0xFFFFFF);
// Offset the y position based on height
y = 50;
}
}
}

Answer 1

Check your loop parameters. For example, in your code above, you set cityX to citySize / 2, then let it iterate while cityX < citySize / 2.
Since cityX >= citySize / 2 from the start, the loop is never executed.
The same goes for the inner loop.