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Course 2D_WPF: 2D-Computer Graphics with C# + WPF
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 Preliminaries intro1.cs driven by a DispatcherTimer Object intro1.cs driven by a DoubleAnimation Object |
Guidance for Visual C# 2010 Express:
1) Main Menu after start of VC# 2010: Tools → Options → check lower left checkbox: Show all Settings → Projects and Solutions → Visual Studio projects location: → C:\temp
2) Main Menu after start of VC# 2010: File → New Project... → Visual Studio installed templates: Empty project
Name: intro1 → Location: C:\temp → Create directory for solution: switch off → OK.
| 3) In the window titeld: Solution Explorer -Solution 'intro1' (1 project) we have to add 4 References and an intro1.cs file: 3.1 Right-click the branch References. A drop-down menu appears. 3.2 Right-click the branch intro1. A drop-down menu appears. |
The Solution Explorer should show this: |
4) Main menu of VC# 2010 → Project →
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using System;
using System.Windows;
using System.Windows.Media;
using System.Windows.Controls;
using System.Windows.Shapes;
using System.Windows.Threading;
public class window1 : Window
{ [STAThread] static void Main() { new Application().Run( new window1() ); }
Canvas myCanvas = new Canvas();
Line line1 = new Line();
Line line2 = new Line();
Rectangle rect = new Rectangle();
Ellipse elli = new Ellipse();
DockPanel myPanel = new DockPanel();
TextBox left = new TextBox();
TextBox top = new TextBox();
TextBox right = new TextBox();
TextBox bottom = new TextBox();
TextBox central = new TextBox();
double zoom = 1.1;
double angle = 0;
Random r = new Random();
Byte r1, g1, b1, r2, g2, b2;
public window1() //constructor
{ Top = Left = 50;
this.Width = this.Height = 500;
this.Title = "intro1";
myCanvas.Children.Add( line1 );
myCanvas.Children.Add( line2 );
myCanvas.Children.Add( rect );
myCanvas.Children.Add( elli );
myCanvas.Children.Add( myPanel );
myPanel.Children.Add( top ); DockPanel.SetDock( top , Dock.Top ); top .Text = "top";
myPanel.Children.Add( bottom ); DockPanel.SetDock( bottom, Dock.Bottom ); bottom.Text = "bottom";
myPanel.Children.Add( left ); DockPanel.SetDock( left , Dock.Left ); left .Text = "left";
myPanel.Children.Add( right ); DockPanel.SetDock( right , Dock.Right ); right .Text = "right";
myPanel.Children.Add( central );
//Background = new SolidColorBrush( Colors.Cornsilk );
Background = new LinearGradientBrush( Colors.Red, Colors.Blue, 90 );
Foreground = new SolidColorBrush( Color.FromRgb( 0, 0, 200 ) );
FontFamily = new FontFamily( "Courier New" );
FontSize = 12;
foreach( TextBox text in myPanel.Children )
{ text.HorizontalAlignment = HorizontalAlignment.Center;
text.VerticalAlignment = VerticalAlignment.Center;
}
foreach( Object obj in myCanvas.Children )
{ if ( obj.GetType() == typeof(DockPanel) ) continue;
((Shape)obj).Stroke = Brushes.Black;
((Shape)obj).StrokeThickness = 5;
}
rect.Fill = Brushes.White;
r1 = (Byte)r.Next(255); g1 = (Byte)r.Next(255); b1 = (Byte)r.Next(255);
r2 = (Byte)r.Next(255); g2 = (Byte)r.Next(255); b2 = (Byte)r.Next(255);
DispatcherTimer myTimer = new DispatcherTimer();
myTimer.Interval = TimeSpan.FromMilliseconds( 40 );
myTimer.Tick += TimerOnTick;
myTimer.Start();
}
private void TimerOnTick( Object sender, EventArgs args )
{ if ( myCanvas.ActualWidth < 200 ) zoom = 1.1;
if ( myCanvas.ActualWidth > 800 ) zoom = 0.99;
this.Width *= zoom;
this.Height *= zoom;
this.FontSize *= zoom;
}
protected override void OnRenderSizeChanged( SizeChangedInfo sizeInfo )
{ String s1 = "Hello World " + DateTime.Now.ToString() + "\n";
int width = Convert.ToInt32( this.Width );
int height = Convert.ToInt32( this.Height );
String s2 = "Window Size = " + width.ToString() + " x " + height.ToString() + "\n";
width = Convert.ToInt32( myCanvas.ActualWidth );
height = Convert.ToInt32( myCanvas.ActualHeight );
String s3 = "Client Size = " + width.ToString() + " x " + height.ToString() + "\n";
String s4 = String.Format( "Font Size = {0,2:F1}", this.FontSize );
central.Text = s1 + s2 + s3 + s4;
line1.X1 = 0; line1.Y1 = 0; line1.X2 = myCanvas.ActualWidth; line1.Y2 = myCanvas.ActualHeight;
line2.X1 = myCanvas.ActualWidth; line2.Y1 = 0; line2.X2 = 0; line2.Y2 = myCanvas.ActualHeight;
Canvas.SetLeft( rect, myCanvas.ActualWidth /5 );
Canvas.SetLeft( elli, myCanvas.ActualWidth /5 );
Canvas.SetTop ( rect, myCanvas.ActualHeight/5 );
Canvas.SetTop ( elli, myCanvas.ActualHeight/5 );
rect .Width = elli.Width = 3 * myCanvas.ActualWidth / 5;
rect .Height = elli.Height = 3 * myCanvas.ActualHeight / 5;
Color color1 = Color.FromRgb( r1++, g1++, b1++ );
Color color2 = Color.FromRgb( r2++, g2++, b2++ );
RadialGradientBrush brush = new RadialGradientBrush( color1, color2 );
brush.SpreadMethod = GradientSpreadMethod.Repeat;
brush.RadiusX = brush.RadiusY = 0.1;
brush.GradientOrigin = new Point( 0.5+0.05*Math.Cos(angle), 0.5+0.05*Math.Sin(angle) );
elli.Fill = brush;
angle += Math.PI / 32;
myPanel.Width = myCanvas.ActualWidth;
myPanel.Height = myCanvas.ActualHeight;
Content = myCanvas;
}
}
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Main menu of VC# 2010 → Project →
using System;
using System.Windows;
using System.Windows.Media;
using System.Windows.Controls;
using System.Windows.Shapes;
using System.Windows.Media.Animation;
public class window1 : Window
{ [STAThread] static void Main() { new Application().Run( new window1() ); }
Canvas myCanvas = new Canvas();
Line line1 = new Line();
Line line2 = new Line();
Rectangle rect = new Rectangle();
Ellipse elli = new Ellipse();
DockPanel myPanel = new DockPanel();
TextBox left = new TextBox();
TextBox top = new TextBox();
TextBox right = new TextBox();
TextBox bottom = new TextBox();
TextBox central = new TextBox();
public window1() //constructor
{ Top = Left = 50;
this.Width = this.Height = 500;
this.Title = "intro1";
myCanvas.Children.Add( line1 );
myCanvas.Children.Add( line2 );
myCanvas.Children.Add( rect );
myCanvas.Children.Add( elli );
myCanvas.Children.Add( myPanel );
myPanel.Children.Add( top ); DockPanel.SetDock( top , Dock.Top ); top .Text = "top";
myPanel.Children.Add( bottom ); DockPanel.SetDock( bottom, Dock.Bottom ); bottom.Text = "bottom";
myPanel.Children.Add( left ); DockPanel.SetDock( left , Dock.Left ); left .Text = "left";
myPanel.Children.Add( right ); DockPanel.SetDock( right , Dock.Right ); right .Text = "right";
myPanel.Children.Add( central );
//Background = new SolidColorBrush( Colors.Cornsilk );
Background = new LinearGradientBrush( Colors.Red, Colors.Blue, 90 );
Foreground = new SolidColorBrush( Color.FromRgb( 0, 0, 200 ) );
FontFamily = new FontFamily( "Courier New" );
FontSize = 12;
foreach( TextBox text in myPanel.Children )
{ text.HorizontalAlignment = HorizontalAlignment.Center;
text.VerticalAlignment = VerticalAlignment.Center;
}
foreach( Object obj in myCanvas.Children )
{ if ( obj.GetType() == typeof(DockPanel) ) continue;
((Shape)obj).Stroke = Brushes.Black;
((Shape)obj).StrokeThickness = 5;
}
rect.Fill = Brushes.White;
DoubleAnimation anim = new DoubleAnimation();
anim.Duration= new Duration( TimeSpan.FromSeconds( 3 ) );
anim.AutoReverse = true;
anim.RepeatBehavior = RepeatBehavior.Forever;
anim.From = 100;
anim.To = 600;
this.BeginAnimation( Window.WidthProperty, anim );
this.BeginAnimation( Window.HeightProperty, anim );
anim.From = 100 - 2* SystemParameters.ResizeFrameVerticalBorderWidth;
anim.To = 600 - 2* SystemParameters.ResizeFrameVerticalBorderWidth;
myCanvas.BeginAnimation( Canvas.WidthProperty, anim );
line1 .BeginAnimation( Line.X2Property, anim );
line2 .BeginAnimation( Line.X1Property, anim );
myPanel .BeginAnimation( Panel.WidthProperty, anim );
anim.From = 100 - 2* SystemParameters.ResizeFrameHorizontalBorderHeight - SystemParameters.CaptionHeight;
anim.To = 600 - 2* SystemParameters.ResizeFrameHorizontalBorderHeight - SystemParameters.CaptionHeight;
myCanvas.BeginAnimation( Canvas.HeightProperty, anim );
line1.BeginAnimation( Line.Y2Property, anim );
line2.BeginAnimation( Line.Y2Property, anim );
myPanel .BeginAnimation( Panel.HeightProperty, anim );
anim.From = ( 100 - 2* SystemParameters.ResizeFrameVerticalBorderWidth ) / 5;
anim.To = ( 600 - 2* SystemParameters.ResizeFrameVerticalBorderWidth ) / 5;
rect.BeginAnimation( Canvas.LeftProperty, anim );
elli.BeginAnimation( Canvas.LeftProperty, anim );
anim.From = ( 100 - 2* SystemParameters.ResizeFrameHorizontalBorderHeight - SystemParameters.CaptionHeight ) / 5;
anim.To = ( 600 - 2* SystemParameters.ResizeFrameHorizontalBorderHeight - SystemParameters.CaptionHeight ) / 5;
rect.BeginAnimation( Canvas.TopProperty, anim );
elli.BeginAnimation( Canvas.TopProperty, anim );
anim.From = 3 * ( 100 - 2* SystemParameters.ResizeFrameVerticalBorderWidth ) / 5;
anim.To = 3 * ( 600 - 2* SystemParameters.ResizeFrameVerticalBorderWidth ) / 5;
rect.BeginAnimation( Canvas.WidthProperty, anim );
elli.BeginAnimation( Canvas.WidthProperty, anim );
anim.From = 3 * ( 100 - 2* SystemParameters.ResizeFrameHorizontalBorderHeight - SystemParameters.CaptionHeight ) / 5;
anim.To = 3 * ( 600 - 2* SystemParameters.ResizeFrameHorizontalBorderHeight - SystemParameters.CaptionHeight ) / 5;
rect.BeginAnimation( Canvas.HeightProperty, anim );
elli.BeginAnimation( Canvas.HeightProperty, anim );
anim.From = 2;
anim.To = 20;
myCanvas.BeginAnimation( Window.FontSizeProperty, anim );
Content = myCanvas;
}
protected override void OnRenderSizeChanged( SizeChangedInfo sizeInfo )
{ String s1 = "Hello World " + DateTime.Now.ToString() + "\n";
int width = Convert.ToInt32( this.Width );
int height = Convert.ToInt32( this.Height );
String s2 = "Window Size = " + width.ToString() + " x " + height.ToString() + "\n";
width = Convert.ToInt32( myCanvas.ActualWidth );
height = Convert.ToInt32( myCanvas.ActualHeight );
String s3 = "Client Size = " + width.ToString() + " x " + height.ToString();
central.Text = s1 + s2 + s3;
}
}
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