64 lines
1.5 KiB
C#
64 lines
1.5 KiB
C#
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using System;
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using Gtk;
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namespace Samples
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{
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[Section(ContentType = typeof(PolarFixed), Category = Category.Miscellaneous)]
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class PolarFixedSection : ListSection
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{
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public PolarFixedSection()
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{
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AddItem(CreateClock());
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AddItem(CreateSpiral());
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}
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public (string, Widget) CreateClock()
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{
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double theta;
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// Clock
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PolarFixed pf = new PolarFixed();
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for (int hour = 1; hour <= 12; hour++)
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{
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theta = (Math.PI / 2) - hour * (Math.PI / 6);
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if (theta < 0)
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theta += 2 * Math.PI;
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Label l = new Label("<big><b>" + hour.ToString() + "</b></big>");
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l.UseMarkup = true;
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pf.Put(l, theta, 50);
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}
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return ("Clock", pf);
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}
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public (string, Widget) CreateSpiral()
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{
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uint r;
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double theta;
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var pf = new PolarFixed();
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r = 0;
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theta = 0.0;
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foreach (string id in Gtk.Stock.ListIds())
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{
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StockItem item = Gtk.Stock.Lookup(id);
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if (item.Label == null)
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continue;
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var icon = Gtk.Image.NewFromIconName(item.StockId, IconSize.SmallToolbar);
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pf.Put(icon, theta, r);
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// Logarithmic spiral: r = a*e^(b*theta)
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r += 1;
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theta = 10 * Math.Log(10 * r);
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}
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return ("Spiral", pf);
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}
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}
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}
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