/// <summary>
/// Invoked when the Gtk.DrawingArea needs repainting.
/// </summary>
private void OnExposed()
{
var p1 = new Polygon( new Point[] {
new Point( 10, 10 ),
new Point( 100, 100 ),
new Point( 150, 10 )
} );
var t1 = new Triangle(
new Point( 10, 210 ),
new Point( 100, 300 ),
new Point( 150, 210 )
);
var r1 = new Rectangle(
new Point( 300, 10 ),
new Point( 450, 10 ),
new Point( 450, 100 ),
new Point( 300, 100 )
);
var c1 = new Square(
new Point( 300, 210 ),
new Point( 400, 300 )
);
using (var canvas = Gdk.CairoHelper.Create( this.drawingArea.GdkWindow ))
{
canvas.LineWidth = 4;
canvas.SetSourceRGBA( 0, 0, 255, 244 );
canvas.LineJoin = Cairo.LineJoin.Miter;
this.Paint( canvas, p1 );
this.Paint( canvas, r1 );
this.Paint( canvas, t1 );
this.Paint( canvas, c1 );
canvas.GetTarget().Dispose();
}
return;
}
/// <summary>
/// Initializes a new instance of the <see cref="PolygonsExercise.Core.Figure"/> class.
/// Uses a Point[] to define the needed points. The number of points is saved as a future
/// requisite (<see cref="NeededPointsForFigure"/>).
/// </summary>
/// <param name="ps">A Point[] with a given number of Point objects.</param>
public Figure(Point[] ps)
{
this.polygon = new Polygon( ps );
this.NeededPointsForFigure = ps.Length;
}