public (string, Widget) CreateSpiral()
{
uint r;
double theta;
var pf = new PolarFixed();
r = 0;
theta = 0.0;
foreach (string id in Gtk.Stock.ListIds())
{
StockItem item = Gtk.Stock.Lookup(id);
if (item.Label == null)
{
continue;
}
var icon = Gtk.Image.NewFromIconName(item.StockId, IconSize.SmallToolbar);
pf.Put(icon, theta, r);
// Logarithmic spiral: r = a*e^(b*theta)
r += 1;
theta = 10 * Math.Log(10 * r);
}
return("Spiral", pf);
}
public (string, Widget) CreateClock()
{
double theta;
// Clock
PolarFixed pf = new PolarFixed();
for (int hour = 1; hour <= 12; hour++)
{
theta = (Math.PI / 2) - hour * (Math.PI / 6);
if (theta < 0)
{
theta += 2 * Math.PI;
}
Label l = new Label("<big><b>" + hour.ToString() + "</b></big>");
l.UseMarkup = true;
pf.Put(l, theta, 50);
}
return("Clock", pf);
}
public PolarFixedChild(PolarFixed parent, Widget child, double theta, uint r) : base(parent, child)
{
this.theta = theta;
this.r = r;
}