PdfBaseShape Class

[SerializableAttribute]
public abstract class PdfBaseShape : ICloneable, 
	IPdfRenderable, IPdfResourceConsumer

<SerializableAttribute>
Public MustInherit Class PdfBaseShape
	Implements ICloneable, IPdfRenderable, IPdfResourceConsumer

public class RegularPolygon : PdfBaseShape
{
public RegularPolygon(PdfPoint center, double radius, int sides):base(PdfColorFactory.FromGray(0.0),5.0)
{
if (sides < 3) throw new ArgumentException("Polygons must have 3 sides");
GeneratePoints(center, radius, sides);
Center = center;
Radius = radius;
Sides = sides;
}
public PdfPoint Center { get; private set; }
public double Radius { get; private set; }
public int Sides { get; private set; }
private void GeneratePoints(PdfPoint center, double radius, int sides)
{
Points = new List<PdfPoint>();
PdfPoint currPoint = new PdfPoint(0, radius);
Points.Add(currPoint + center);
PdfTransform transform = PdfTransform.Rotate(2 * Math.PI/(double)sides);
for (int i = 1; i < sides; i++)
{
currPoint = transform.Transform(currPoint);
Points.Add(currPoint + center);
}
}
public List<PdfPoint> Points { get; set; }
protected override PdfBaseShape CloneInstance()
{
return new RegularPolygon(Center, Radius, Sides);
}
protected override void DrawShape(PdfPageRenderer r)
{
bool first = true;
PdfPath path = new PdfPath(this);
foreach (PdfPoint p in Points)
{
if (first) { first = false; path.MoveTo(p); }
else { path.LineTo(p); }
}
path.Close();
path.GeneratePdf(w);
}
}