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Page.xaml:
Remove the last three lines </StackPanel>, </Grid> and </UserControl> from
Page.xaml Version 05 and replace them by:
<TextBlock Text="Speed" FontSize="10" HorizontalAlignment="Center"/>
<Slider x:Name="time_interval_slider"
Minimum="0" Maximum="1000" Value="0"
ValueChanged="on_time_interval_slider_value_changed"
IsDirectionReversed="True"/>
<TextBlock Text="Opacity" FontSize="10" HorizontalAlignment="Center"/>
<Slider x:Name="opacity_slider" Minimum="0" Maximum="1" Value="1"
ValueChanged="on_opacity_slider_value_changed" />
<StackPanel Height="10" />
<StackPanel Background="red" >
<Slider x:Name="red_slider" Minimum="0" Maximum="255" Value="0"
ValueChanged="on_color_slider_value_changed" />
</StackPanel>
<StackPanel Background="green" >
<Slider x:Name="green_slider" Minimum="0" Maximum="255" Value="0"
ValueChanged="on_color_slider_value_changed" />
</StackPanel>
<StackPanel Background="blue" >
<Slider x:Name="blue_slider" Minimum="0" Maximum="255" Value="0"
ValueChanged="on_color_slider_value_changed" />
</StackPanel>
<StackPanel Height="10" />
<TextBlock x:Name="textblock_polygon_points" Text="Vertices: 100"
FontSize="10" HorizontalAlignment="Center" />
<Slider x:Name="no_of_polygon_points_slider"
Minimum="3" Maximum="200" Value="100"
ValueChanged="on_no_of_polygon_points_slider_value_changed"/>
</StackPanel>
</Grid>
</UserControl>
Page.xaml.cs:
Remove the last two lines with the last two brackets "}" from
Page.xaml.cs Version 05 and replace them by:
public void on_time_interval_slider_value_changed
( object sender, EventArgs e )
{ int milliseconds = (int)time_interval_slider.Value ;
timer.Interval = new TimeSpan(0, 0, 0, 0, milliseconds );
}
public void on_opacity_slider_value_changed
( object sender, EventArgs e )
{ try {
polygon.Stroke.Opacity = opacity_slider.Value;
polygon.Fill.Opacity = opacity_slider.Value;
} catch {}
}
public void on_color_slider_value_changed
( object sender, EventArgs e )
{ SolidColorBrush brush = (SolidColorBrush)polygon.Fill;
Color c = brush.Color;
switch ( ((Slider)sender).Name )
{ case "red_slider" : c.R = (byte)red_slider .Value; break;
case "green_slider": c.G = (byte)green_slider.Value; break;
case "blue_slider" : c.B = (byte)blue_slider .Value; break;
}
brush = new SolidColorBrush( c );
polygon.Stroke = polygon.Fill = brush;
draw_area.Content = 0;
draw_area.Content = polygon;
}
public void on_no_of_polygon_points_slider_value_changed
( object sender, EventArgs e )
{ try {
no_of_polygon_points = (int)no_of_polygon_points_slider.Value;
textblock_polygon_points.Text = "Vertices: " +
no_of_polygon_points.ToString();
polygon.Points.Clear();
w = draw_area.ActualWidth - 8;
h = draw_area.ActualHeight - 8;
for ( int i=0; i < no_of_polygon_points; i++ )
polygon.Points.Add( new Point( w * r.NextDouble(),
h * r.NextDouble() ) );
draw_area.Content = 0;
draw_area.Content = polygon;
} catch {}
}
}
}
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Preliminaries
