private static void DrawHeightmap(Heightmap2 heightmap)
{
using (var image = new Bitmap(128, 128))
{
using (Graphics graphics = Graphics.FromImage(image))
{
graphics.Clear(Color.White);
for (int i = 0; i < 128; i++)
{
for (int j = 0; j < 128; j++)
{
Color color;
var value = heightmap.GetCell(i, j);
switch (value)
{
case 0:
color = Color.DarkBlue;
break;
case 1:
color = Color.DeepSkyBlue;
break;
case 2:
color = Color.ForestGreen;
break;
case 3:
color = Color.DarkGoldenrod;
break;
case 4:
color = Color.DarkSlateGray;
break;
default:
color = Color.White;
break;
}
image.SetPixel(i, j, color);
}
}
}
image.Save("heightmap.png");
}
}
private static void DrawHeightmap2(Voronoi voronoi, IEnumerable<Cell> cells, string filename, int width, int height)
{
int halfwidth = width / 2;
using (var image = new Bitmap(width, height))
{
using (Graphics graphics = Graphics.FromImage(image))
{
graphics.Clear(Color.White);
foreach (var cell in cells.Where(c => c.Height == 0))
{
float maxX = (float) cell.Vertices.Max(p => p.X);
float minX = (float) cell.Vertices.Min(p => p.X);
int cellWidth = (int) (maxX - minX);
float maxY = (float) cell.Vertices.Max(p => p.Y);
float minY = (float) cell.Vertices.Min(p => p.Y);
int cellHeight = (int) (maxY - minY);
var noiseMap = new Heightmap2(new Size(cellWidth, cellHeight));
noiseMap.Run();
// using (var memStrm = new MemoryStream())
{
using (var noiseImage = new Bitmap(cellWidth, cellHeight))
{
for (int i = 0; i < cellWidth; i++)
{
for (int j = 0; j < cellHeight; j++)
{
var t = noiseMap.GetCell(i, j);
switch (t)
{
case 0:
noiseImage.SetPixel(i, j, Color.ForestGreen);
break;
case 1:
noiseImage.SetPixel(i, j, Color.Green);
break;
case 2:
noiseImage.SetPixel(i, j, Color.DarkGreen);
break;
}
}
}
graphics.DrawImage(noiseImage, minX, minY);
// noiseImage.Save("noise.png");
}
// memStrm.Flush();
// memStrm.Position = 0;
// using (var tempImage = new Bitmap(memStrm))
// {
// graphics.DrawImage(tempImage, minX, minY);
// graphics.DrawLine(Pens.Blue, minX, minY - 5, minX, minY + tempImage.Height + 5);
// graphics.DrawLine(Pens.Blue, minX - 5, minY, minX + tempImage.Width + 5, minY);
// graphics.DrawLine(Pens.Blue, minX - 5, minY + tempImage.Height, minX + tempImage.Width + 5, minY + tempImage.Height);
// graphics.DrawLine(Pens.Blue, minX + tempImage.Width, minY - 5, minX + tempImage.Width, minY + tempImage.Height + 5);
// }
}
// var otherCell = voronoi.Cells.Single(c => c.Site == cell.Site.DoublePoint);
// if (otherCell.Vertices.Count == 0)
// {
// continue;
// }
// var center2 = GetCenterPointOfPoints(otherCell.Vertices, width, height);
// var orderedCells2 = otherCell.Vertices.OrderBy(v => v, new ClockwisePointComparer(center2));
// graphics.FillPolygon(color, orderedCells2.Select(p => new PointF((float) p.X, (float) p.Y)).ToArray());
}
image.Save(filename);
return;
// foreach (var cell in cells.Where(c => c.Height != 0))
// {
// Brush color;
// switch (cell.Height)
// {
// case 1:
// color = Brushes.DarkGoldenrod;
// break;
// case 2:
// color = Brushes.DarkSlateGray;
// break;
// default:
// color = Brushes.White;
// break;
// }
//
// // fix vertices
// // var vertices = cell.Vertices.Select(vertex => new Point(vertex.X - halfwidth, vertex.Y, vertex.Name));
// var center = GetCenterPointOfPoints(cell.Vertices, width, height);
// var orderedCells = cell.Vertices.OrderBy(v => v, new ClockwisePointComparer(center));
//
// var pointFs = orderedCells.Select(p => new PointF((float)p.X, (float)p.Y)).ToArray();
// graphics.FillPolygon(color, pointFs);
//
// var otherCell = voronoi.Cells.Single(c => c.Site == cell.Site.DoublePoint);
// if (otherCell.Vertices.Count == 0)
// {
// continue;
// }
//
// var center2 = GetCenterPointOfPoints(otherCell.Vertices, width, height);
// var orderedCells2 = otherCell.Vertices.OrderBy(v => v, new ClockwisePointComparer(center2));
//
// graphics.FillPolygon(color, orderedCells2.Select(p => new PointF((float)p.X, (float)p.Y)).ToArray());
// }
// foreach (var cell in cells)
// {
// // fix vertices
//// var vertices = cell.Vertices.Select(vertex => new Point(vertex.X - halfwidth, vertex.Y, vertex.Name));
// var center = GetCenterPointOfPoints(cell.Vertices, width, height);
// var orderedCells = cell.Vertices.OrderBy(v => v, new ClockwisePointComparer(center));
//
// graphics.DrawPolygon(Pens.Blue, orderedCells.Select(p => new PointF((float) p.X, (float) p.Y)).ToArray());
//
// var otherCell = voronoi.Cells.Single(c => c.Site == cell.Site.DoublePoint);
// if (otherCell.Vertices.Count == 0)
// {
// continue;
// }
//
// var center2 = GetCenterPointOfPoints(otherCell.Vertices, width, height);
// var orderedCells2 = otherCell.Vertices.OrderBy(v => v, new ClockwisePointComparer(center2));
//
// graphics.DrawPolygon(Pens.Blue, orderedCells2.Select(p => new PointF((float) p.X, (float) p.Y)).ToArray());
// }
}
image.Save(filename);
using (var croppedImage = new Bitmap(halfwidth, height))
{
using (var croppedGraphics = Graphics.FromImage(croppedImage))
{
croppedGraphics.DrawImage(image, new Rectangle(0, 0, halfwidth, height), new Rectangle(halfwidth / 2, 0, halfwidth, height), GraphicsUnit.Pixel);
}
var directory = new DirectoryInfo(filename.Replace(".png", string.Empty));
directory.Create();
var zoomDirectory = new DirectoryInfo(Path.Combine(directory.FullName, "20"));
zoomDirectory.Create();
for (int i = 0; i < 8; i++)
{
for (int j = 0; j < 16; j++)
{
using (var slicedImage = new Bitmap(256, 256))
{
using (var slicedGraphics = Graphics.FromImage(slicedImage))
{
slicedGraphics.DrawImage(croppedImage, new Rectangle(0, 0, 256, 256), new Rectangle(j * 256, i * 256, 256, 256), GraphicsUnit.Pixel);
}
var path = Path.Combine(directory.Name, zoomDirectory.Name, string.Format("slices_{0}_{1}.png", j, i));
slicedImage.Save(path);
}
}
}
using (var resizedImage = new Bitmap(halfwidth/2, height/2))
{
using (var resizedGraphics = Graphics.FromImage(resizedImage))
{
resizedGraphics.DrawImage(croppedImage, new Rectangle(0, 0, halfwidth / 2, height / 2), new Rectangle(0, 0, halfwidth, height), GraphicsUnit.Pixel);
}
zoomDirectory = new DirectoryInfo(Path.Combine(directory.FullName, "19"));
zoomDirectory.Create();
for (int i = 0; i < 4; i++)
{
for (int j = 0; j < 8; j++)
{
using (var slicedImage = new Bitmap(256, 256))
{
using (var slicedGraphics = Graphics.FromImage(slicedImage))
{
slicedGraphics.DrawImage(resizedImage, new Rectangle(0, 0, 256, 256), new Rectangle(j * 256, i * 256, 256, 256), GraphicsUnit.Pixel);
}
slicedImage.Save(Path.Combine(directory.Name, zoomDirectory.Name, string.Format("slices_{0}_{1}.png", j, i)));
}
}
}
}
croppedImage.Save(filename.Replace(".png", "-cropped.png"));
}
}
}
private static void Main(string[] args)
{
Thread.CurrentThread.CurrentCulture = CultureInfo.InvariantCulture;
Console.WriteLine("Generating heightmap");
var heightmap = new Heightmap2(new Size(128, 128));
heightmap.Run();
// DrawHeightmap(heightmap);
var basePath = DateTime.Now.ToString("yyyy-MM-dd_hh-mm-ss");
Directory.CreateDirectory(basePath);
int seed;
if (args.Length == 0)
{
var seedRandom = new Random();
seed = seedRandom.Next();
}
else
{
seed = int.Parse(args[0]);
}
var settings = new VoronoiSettings
{
Seed = seed,
SliceSize = 256,
SlicesWidth = 16,
SlicesHeight = 8,
SiteCount = 2000
};
var jsonSerializer = JsonSerializer.CreateDefault();
using (var writer = new StreamWriter(new FileStream(Path.Combine(basePath, "settings.json"), FileMode.CreateNew)))
{
jsonSerializer.Serialize(writer, settings);
writer.Flush();
}
var rnd = new Random(settings.Seed);
var points = new HashSet<Point>();
Console.WriteLine("Generating random points");
LoadPoints(rnd, settings, points);
using (var writer = new StreamWriter(new FileStream(Path.Combine(basePath, "points.json"), FileMode.CreateNew)))
{
jsonSerializer.Serialize(writer, points);
writer.Flush();
}
var mapHelper = new MapHelper();
var centerFinder = new CenterFinder(mapHelper);
var faultyEdgeFixer = new FaultyEdgeFixer(mapHelper);
var mapExtender = new MapExtender();
Console.WriteLine("Duplicating points for wraparound map");
var pointsForWrapAroundMap = mapExtender.MakePointsForWrapAroundMap(points, settings.Width);
var voronoi = new Voronoi();
Console.WriteLine("Computing wraparound voronoi");
voronoi.Compute(pointsForWrapAroundMap, settings.Width * 2, settings.Height);
// DrawWrapAroundMap(voronoi, pointsForWrapAroundMap, "VoronoiWrapAround.png", width * 2, height);
// do y times:
for (int i = 0; i < 3; i++)
{
Console.WriteLine("Fixing faulty edges");
faultyEdgeFixer.FixFaultyEdges(voronoi, settings);
Console.WriteLine("Looking for center of cells");
var centerOfRealCells = centerFinder.FindAllCenters(voronoi, settings);
Console.WriteLine("Setting new start point");
points = new HashSet<Point>(centerOfRealCells);
// create new wraparound for these points
Console.WriteLine("Duplicating points for wraparound map");
pointsForWrapAroundMap = mapExtender.MakePointsForWrapAroundMap(points, settings.Width);
// generate voronoi
Console.WriteLine("Computing wraparound voronoi");
voronoi.Compute(pointsForWrapAroundMap, settings.Width * 2, settings.Height);
// DrawWrapAroundMap(voronoi, pointsForWrapAroundMap, string.Format("VoronoiWrapAround{0}.png", i + 1), width * 2, height);
}
Console.WriteLine("Fixing faulty edges");
faultyEdgeFixer.FixFaultyEdges(voronoi, settings);
Console.WriteLine("Looking for final cells");
var finalCells = voronoi.Cells
// filter the "real" cells
.Where(c => c.Site.RealPoint).ToList();
var ratioX = (settings.Width * 2) / 128d;
var ratioY = settings.Height / 128d;
Console.WriteLine("Applying heightmap to final cells");
foreach (var finalCell in finalCells)
{
if (!finalCell.Vertices.Any())
{
continue;
}
if (finalCell.Vertices.Any(p => p.Y <= 0d || p.Y >= settings.Height))
{
finalCell.Height = -1;
continue;
}
finalCell.Height = heightmap.GetCell((int) (finalCell.Site.X / ratioX) - 1, (int) (finalCell.Site.Y / ratioY) - 1);
}
Console.WriteLine("Generating heightmap image");
var filename = Path.Combine(basePath, string.Format("VoronoiHeightmap_{0}.png", DateTime.Now.ToString("yyyy-MM-dd_hh-mm-ss")));
DrawHeightmap2(voronoi, finalCells, filename, settings.Width * 2, settings.Height);
}
