public class PlanetRegion
{
    public float North { get; set; }
    public float South { get; set; }
    public float West { get; set; }
    public float East { get; set; }

    public PlanetRegion ToRadians()
    {
        var radian = (float)(Math.PI * 2) / 360f;
        return new PlanetRegion {
            West = West * radian,
            East = East * radian,
            North = North * radian,
            South = South * radian
        };
    }

	public override string ToString()
	{
		return string.Format ("[North={0}, South={1}, West={2}, East={3}]", North, South, West, East);

for(float inc = -90f; inc < 90f; inc += incStep)
	for(float az = -180; az < 180; az += azStep)
	{
		CreateRegion(new Voxels.Objects.PlanetRegion {
			North = inc + incStep,
			South = inc,
			East = az + azStep,
			West = az
		});
	}

// determine range and stepping variable
var range = region.ToRadians();
var verticalStep = (range.North - range.South) / (verticals - 1);
var horizontalStep = (range.East - range.West) / (horizontals - 1);

//range.South -= verticalStep;
//range.East += horizontalStep;

// define result containers
var vertList = new List<Vector3>();
var uvList = new List<Vector2>();
// ok lets do this
for (double az = range.West; az <= range.East; az += horizontalStep)
{
    for (double inc = range.North; inc >= range.South; inc -= verticalStep)