private static Rectangle? Rect( Circle c, ImageSpace i )
{
if( double.IsInfinity( c.Radius ) )
return null;
Vector3D upperLeft = i.Pixel( new Vector3D( c.Center.X - c.Radius, c.Center.Y + c.Radius, 0 ) );
double width = i.Width( c.Radius * 2 );
double height = i.Height( c.Radius * 2 );
Rectangle rect = new Rectangle( (int)upperLeft.X, (int)upperLeft.Y, (int)width, (int)height );
return rect;
}
static private Rectangle?Rect(Circle c, ImageSpace i)
{
if (double.IsInfinity(c.Radius))
{
return(null);
}
Vector3D upperLeft = i.Pixel(new Vector3D(c.Center.X - c.Radius, c.Center.Y + c.Radius, 0));
double width = i.Width(c.Radius * 2);
double height = i.Height(c.Radius * 2);
Rectangle rect = new Rectangle((int)upperLeft.X, (int)upperLeft.Y, (int)width, (int)height);
return(rect);
}
static public void DrawCircle(Circle c, Graphics g, ImageSpace i)
{
if (double.IsInfinity(c.Radius))
{
return;
}
Vector3D upperLeft = i.Pixel(new Vector3D(c.Center.X - c.Radius, c.Center.Y + c.Radius, 0));
double width = i.Width(c.Radius * 2);
double height = i.Height(c.Radius * 2);
Rectangle rect = new Rectangle((int)upperLeft.X, (int)upperLeft.Y, (int)width, (int)height);
using (Pen pen = new Pen(Color.Black, 1.0f))
g.DrawEllipse(pen, rect);
}