public static void DrawPoint(this Graphics g, VoronoiAlgorithms.Models.Point center, Brush pen, RenderConfig config, int radius = 4)
{
int xCoord = (int)Math.Floor(center.x - radius + config.xPadding + config.xOffset);
int yCoord = (int)Math.Floor(center.y - radius + config.yPadding + config.yOffset);
g.FillEllipse(pen, xCoord, yCoord, radius * 2, radius * 2);
}
public static void DrawCircle(this Graphics g, Models.Point center, Pen pen, double radius, RenderConfig config)
{
int minX = (int)(Math.Floor(center.x) - radius + config.xPadding + config.xOffset);
int minY = (int)(Math.Floor(center.y) - radius + config.yPadding + config.yOffset);
Rectangle rect = new Rectangle(minX, minY, (int)radius * 2, (int)radius * 2);
g.DrawEllipse(pen, rect);
}
public static System.Drawing.Point TransposePoint(VoronoiAlgorithms.Models.Point p, RenderConfig config)
{
return(new System.Drawing.Point((int)(p.x + config.xPadding + config.xOffset), (int)(p.y + config.yPadding + config.yOffset)));
}
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();
}
