Mega Code Archive

 

Categories / C# / WPF

 

Creating Lines

<Window x:Class="WpfApplication1.PerpendicularLine"   xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"   xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"   Title="Perpendicular Line" Height="300" Width="400">   <Viewbox Stretch="Uniform">     <Canvas Name="canvas1" Grid.Column="1" Margin="10"       ClipToBounds="True" Width="270" Height="280">         <TextBlock Name="tbPoint1" Canvas.Top="10">           Point1         </TextBlock>         <TextBlock Name="tbPoint2" Canvas.Top="25">           Point2         </TextBlock>         <TextBlock Name="tbPoint3" Canvas.Top="40">           Point3         </TextBlock>         <TextBlock Name="tbPoint4" Canvas.Top="55">           Point4         </TextBlock>       </Canvas>   </Viewbox> </Window> //File:Window.xaml.cs using System; using System.Windows; using System.Windows.Controls; using System.Windows.Media; using System.Windows.Shapes; namespace WpfApplication1 {     public partial class PerpendicularLine : Window     {         private Line line1;         private Line line2;         public PerpendicularLine()         {             InitializeComponent();             Rectangle rect = new Rectangle();             rect.Stroke = Brushes.Black;             rect.Width = canvas1.Width;             rect.Height = canvas1.Height;             canvas1.Children.Add(rect);             line1 = new Line();             line2 = new Line();             AddLines();         }         private void AddLines()         {             Point pt1 = new Point();             Point pt2 = new Point();             pt1.X = 30;             pt1.Y = 300;             pt2.X = 100;             pt2.Y = 500;             double length = 400;             line1 = new Line();             line1.X1 = pt1.X;             line1.Y1 = pt1.Y;             line1.X2 = pt2.X;             line1.Y2 = pt2.Y;             line1.Stroke = Brushes.Gray;             line1.StrokeThickness = 4;             canvas1.Children.Add(line1);             Canvas.SetLeft(tbPoint1, pt1.X);             Canvas.SetTop(tbPoint1, pt1.Y);             Canvas.SetLeft(tbPoint2, pt2.X);             Canvas.SetTop(tbPoint2, pt2.Y);             tbPoint1.Text = "Pt1(" + pt1.ToString() + ")";             tbPoint2.Text = "Pt2(" + pt2.ToString() + ")";             Vector v1 = pt1 - pt2;             Matrix m1 = new Matrix();             Point pt3 = new Point();             Point pt4 = new Point();             m1.Rotate(-90);             v1.Normalize();             v1 *= length;             line2 = new Line();             line2.Stroke = Brushes.Gray;             line2.StrokeThickness = 4;             line2.StrokeDashArray =             DoubleCollection.Parse("3, 1");             pt3 = pt2 + v1 * m1;             m1 = new Matrix();             m1.Rotate(90);             pt4 = pt2 + v1 * m1;             line2.X1 = pt3.X;             line2.Y1 = pt3.Y;             line2.X2 = pt4.X;             line2.Y2 = pt4.Y;             canvas1.Children.Add(line2);             Canvas.SetLeft(tbPoint3, pt3.X);             Canvas.SetTop(tbPoint3, pt3.Y);             Canvas.SetLeft(tbPoint4, pt4.X);             Canvas.SetTop(tbPoint4, pt4.Y);             pt3.X = Math.Round(pt3.X, 0);             pt3.Y = Math.Round(pt3.Y, 0);             pt4.X = Math.Round(pt4.X, 0);             pt4.Y = Math.Round(pt4.Y, 0);             tbPoint3.Text = "Pt3(" + pt3.ToString() + ")";             tbPoint4.Text = "Pt4(" + pt4.ToString() + ")";         }     } }