// 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");
}
public static void DrawTriangulation(DelaunayTriangulator tri, RenderConfig config, string filename)
{
// Initialize surface:
Bitmap image = CreateBitmap(config);
Graphics g = Graphics.FromImage(image);
g.Clear(Color.White);
// Style for site centers:
SolidBrush pointBrush = new SolidBrush(Color.Black);
SolidBrush centerBrush = new SolidBrush(Color.Red);
// Style for lines:
Pen linePen = new Pen(Brushes.SlateGray)
{
Width = 1.0F
};
Pen circlePen = new Pen(Brushes.GreenYellow)
{
Width = 0.75F
};
Font font = new Font("Arial", 10);
foreach (Vertex vertex in tri.triangles)
{
System.Drawing.Point[] drawPoints = new System.Drawing.Point[4];
for (int i = 0; i < vertex.points.Count; i++)
{
Models.Point p = vertex.points[i];
System.Drawing.Point pWithOffset = TransposePoint(p, config);
g.DrawString(p.ToString(), font, centerBrush, pWithOffset);
drawPoints[i] = pWithOffset;
}
drawPoints[3] = drawPoints[0];
g.DrawLines(linePen, drawPoints);
Models.Point point = vertex.center;
g.DrawPoint(point, centerBrush, config);
g.DrawCircle(point, circlePen, vertex.radius, config);
}
foreach (Models.Point point in tri.allPoints)
{
g.DrawPoint(point, pointBrush, config);
}
image.Save(filename);
linePen.Dispose();
pointBrush.Dispose();
centerBrush.Dispose();
circlePen.Dispose();
}
