GraphicPath FillMode.Alternate : GraphicsPath « 2D Graphics « VB.Net Tutorial






GraphicPath FillMode.Alternate
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
Imports System.Math
public class GraphicPathFillModeAlternate
   public Shared Sub Main
        Application.Run(New Form1)
   End Sub
End class

public class Form1
  Inherits System.Windows.Forms.Form

  Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
        ' Generate star points.
        Dim cx As Integer = Me.ClientSize.Width \ 2
        Dim cy As Integer = Me.ClientSize.Height \ 2
        Dim radius As Integer = CInt(cy * 0.9)
        Dim star_pts(4) As Point
        Dim angle As Double = -PI / 2
        For i As Integer = 0 To 4
            star_pts(i).X = cx + CInt(radius * Cos(angle))
            star_pts(i).Y = cy + CInt(radius * Sin(angle))
            angle += 4 * PI / 5
        Next i

        Dim star_path As New GraphicsPath
        star_path.AddPolygon(star_pts)

        star_path.FillMode = FillMode.Alternate

        e.Graphics.FillPath(Brushes.White, star_path)
        e.Graphics.DrawPath(Pens.Black, star_path)
  End Sub

  Public Sub New()
   
    MyBase.New()
    Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
    Me.ClientSize = New System.Drawing.Size(292, 273)
    Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen

  End Sub

End Class








17.41.GraphicsPath
17.41.1.Create a Graphics pathCreate a Graphics path
17.41.2.Getting GraphicsPath PropertiesGetting GraphicsPath Properties
17.41.3.Add Rectangle to GraphicsPathAdd Rectangle to GraphicsPath
17.41.4.Draw pathDraw path
17.41.5.Close a PathClose a Path
17.41.6.Use GraphicsPath to create Text outlineUse GraphicsPath to create Text outline
17.41.7.Add arcs to GraphicsPathAdd arcs to GraphicsPath
17.41.8.Add Beziers to GraphicsPathAdd Beziers to GraphicsPath
17.41.9.Add string to GraphicsPathAdd string to GraphicsPath
17.41.10.Add string and two ellipses to a GraphicsPathAdd string and two ellipses to a GraphicsPath
17.41.11.Flattened EllipseFlattened Ellipse
17.41.12.GraphicPath FillMode.AlternateGraphicPath FillMode.Alternate
17.41.13.GraphicPath FillMode.WindingGraphicPath FillMode.Winding
17.41.14.GraphicPath TextRegion