static void Main(string[] args)
{
if (args.Length != 2)
{
Console.WriteLine("Usage: {0} filename.poly tolerance-degree", AppDomain.CurrentDomain.FriendlyName);
return;
}
if (!File.Exists(args[0]))
{
Console.WriteLine("File {0} not found.", args[0]);
return;
}
System.Threading.Thread.CurrentThread.CurrentCulture = System.Globalization.CultureInfo.InvariantCulture;
double tolerance;
if (!Double.TryParse(args[1], out tolerance))
{
Console.WriteLine("Tolerance is not a number.");
return;
}
tolerance *= 10000000;
var outputFilepath = Path.GetFileNameWithoutExtension(Path.GetFullPath(args[0])) + "-simplify.poly";
var polyFile = PolyFile.FromFile(args[0]);
int pointsOrig = 0;
int pointsSimp = 0;
for (int i = 0; i < polyFile.Outer.Count; i++)
{
pointsOrig += polyFile.Outer[i].Nodes.Count;
var simplify = Simplify.SimplifyDouglasPeuckerPolyline(polyFile.Outer[i].Nodes, tolerance);
pointsSimp += simplify.Count;
polyFile.Outer[i] = new Polygon(simplify);
}
for (int i = 0; i < polyFile.Inner.Count; i++)
{
pointsOrig += polyFile.Inner[i].Nodes.Count;
var simplify = Simplify.SimplifyDouglasPeuckerPolyline(polyFile.Inner[i].Nodes, tolerance);
pointsSimp += simplify.Count;
polyFile.Inner[i] = new Polygon(simplify);
}
polyFile.Save(outputFilepath);
Console.WriteLine("Points: {0} -> {1} ({2:P0})", pointsOrig, pointsSimp, pointsSimp / (float)pointsOrig);
}
public static PolyFile FromFile(string filePath)
{
if (!File.Exists(filePath))
{
Console.Error.WriteLine("File {0} not found.", filePath);
throw new FileNotFoundException();
}
var polyFile = new PolyFile();
string[] borderLines = File.ReadAllLines(filePath /*, Encoding.GetEncoding(1251)*/);
polyFile.Name = borderLines[0];
Polygon polyline = null;
bool polygonInner = false;
for (int i = 1; i < borderLines.Length; i++)
{
var line = borderLines[i];
if (line[0] != ' ')
{
if (line == "END")
{
if (polyline != null && polyline.IsClose)
{
if (polygonInner)
{
polyFile.Inner.Add(polyline);
}
else
{
polyFile.Outer.Add(polyline);
}
}
polyline = null;
continue;
}
polyline = new Polygon();
polygonInner = (line[0] == '!');
continue;
}
var coords = borderLines[i].Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
int lon = ((int)Math.Round(Double.Parse(coords[0], System.Globalization.CultureInfo.InvariantCulture) * 10000000));
int lat = ((int)Math.Round(Double.Parse(coords[1], System.Globalization.CultureInfo.InvariantCulture) * 10000000));
polyline.AddNode(lon, lat);
}
return(polyFile);
}