public static void DrawDiagram(BruteForceVoronoi diagram, RenderConfig config, string filename)
{
Bitmap image = CreateBitmap(config);
for (int row = 0; row < image.Height; row++)
{
for (int col = 0; col < image.Width; col++)
{
bool initialPadding = col < config.xPadding || row < config.yPadding;
bool finalPadding = (col - config.xPadding) >= diagram.output.GetLength(0) || (row - config.yPadding) >= diagram.output.GetLength(1);
if (initialPadding || finalPadding)
{
image.SetPixel(col, row, Color.White);
}
else
{
ushort pointIndex = diagram.output[col - config.xPadding, row - config.yPadding];
image.SetPixel(col, row, diagram.sites[pointIndex].color);
}
}
}
// Note: graphics draws on top of the existing bitmap by reference
Graphics g = Graphics.FromImage(image);
SolidBrush whiteBrush = new SolidBrush(Color.White);
foreach (Models.Point site in diagram.sites)
{
g.DrawPoint(site, whiteBrush, config);
}
image.Save(filename);
whiteBrush.Dispose();
}
// Runs a specific Voronoi Generation test and returns the time it took
// to complete.
static long RunTests(int trial, int numPoints, int max, TestMode t)
{
Stopwatch timer = new Stopwatch();
List <Point> sites = Point.GetRandomPoints(numPoints, 0, max);
if (t == TestMode.BOWYER_WATSON)
{
timer.Start();
DelaunayTriangulator generator = new DelaunayTriangulator(sites);
generator.GenerateVoronoi();
timer.Stop();
}
else
{
timer.Start();
BruteForceVoronoi generator = new BruteForceVoronoi(sites);
generator.GenerateVoronoi();
timer.Stop();
}
long elapsed = timer.ElapsedMilliseconds;
Console.WriteLine(trial + "\t\t" + numPoints + "\t\t" + max + "\t\t" + elapsed);
return(elapsed);
}
// Renders a diagram based off of random points.
// Uses same points with both methods.
public static void RenderSameDiagram()
{
List <Point> points = Point.GetRandomPoints(numPointsForPic, 0, rangeForPic);
DelaunayTriangulator tri = new DelaunayTriangulator(points);
VoronoiDiagram voroEfficient = tri.GenerateVoronoi();
BruteForceVoronoi voroBrute = new BruteForceVoronoi(points);
voroBrute.GenerateVoronoi();
RenderConfig config = voroBrute.FullFrameConfig;
config.xPadding += 50;
config.yPadding += 50;
VoronoiRenderer.DrawDiagram(voroEfficient, config, "bowyer_output.bmp");
VoronoiRenderer.DrawTriangulation(tri.WithoutSupertriangle(), config, "bowyer_triangulation_no_super.bmp");
VoronoiRenderer.DrawTriangulation(tri, config, "bowyer_triangulation_super.bmp");
VoronoiRenderer.DrawDiagram(voroBrute, config, "brute_force_output.bmp");
}
