VB.Net/2D/Interpolation Mode

Interpolation Mode Demo

<source lang="vbnet"> Imports System Imports System.Windows.Forms Imports System.Drawing.Text Imports System.Drawing Public Class MainClass

   Shared Sub Main(ByVal args As String())
       Dim myform As Form = New Form1()
       Application.Run(myform)
   End Sub

End Class

Public Class Form1

   Private Sub Form1_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles MyBase.Paint
       " Draw a smiley face.
       Dim bm As New Bitmap("test.ico")
       " Display at full scale.
       e.Graphics.DrawImage(bm, 10, 10)
       " Display at reduced scales.
       Dim x As Integer = 10
       Dim y As Integer = 120
       DrawingInterpolationMode(e.Graphics, bm, Drawing2D.InterpolationMode.Default, x, y)
       DrawingInterpolationMode(e.Graphics, bm, Drawing2D.InterpolationMode.Low, x, y)
       DrawingInterpolationMode(e.Graphics, bm, Drawing2D.InterpolationMode.High, x, y)
       DrawingInterpolationMode(e.Graphics, bm, Drawing2D.InterpolationMode.Bilinear, x, y)
       x = 10
       y += 100
       DrawingInterpolationMode(e.Graphics, bm, Drawing2D.InterpolationMode.Bicubic, x, y)
       DrawingInterpolationMode(e.Graphics, bm, Drawing2D.InterpolationMode.NearestNeighbor, x, y)
       DrawingInterpolationMode(e.Graphics, bm, Drawing2D.InterpolationMode.HighQualityBilinear, x, y)
       DrawingInterpolationMode(e.Graphics, bm, Drawing2D.InterpolationMode.HighQualityBicubic, x, y)
   End Sub
   Private Sub DrawingInterpolationMode(ByVal gr As Graphics, ByVal bm As Bitmap, ByVal interpolation_mode As Drawing2D.InterpolationMode, ByRef x As Integer, ByVal y As Integer)
       gr.DrawString(interpolation_mode.ToString, Me.Font, Brushes.Black, x, y)
       gr.InterpolationMode = interpolation_mode
       gr.DrawImage(bm, x, y + 20, 50, 50)
       gr.InterpolationMode = interpolation_mode
       Dim src_rect As New Rectangle(35, 35, 30, 30)
       Dim dest_rect As New Rectangle(x + 60, y + 20, 50, 50)
       gr.DrawImage(bm, dest_rect, src_rect, GraphicsUnit.Pixel)
       gr.DrawRectangle(Pens.Black, dest_rect)
       x += 120
   End Sub
   

End Class

<Global.Microsoft.VisualBasic.rupilerServices.DesignerGenerated()> _ Partial Public Class Form1

   Inherits System.Windows.Forms.Form
   "Form overrides dispose to clean up the component list.
   <System.Diagnostics.DebuggerNonUserCode()> _
   Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
       If disposing AndAlso components IsNot Nothing Then
           components.Dispose()
       End If
       MyBase.Dispose(disposing)
   End Sub
   "Required by the Windows Form Designer
   Private components As System.ruponentModel.IContainer
   "NOTE: The following procedure is required by the Windows Form Designer
   "It can be modified using the Windows Form Designer.  
   "Do not modify it using the code editor.
   <System.Diagnostics.DebuggerStepThrough()> _
   Private Sub InitializeComponent()
       Me.SuspendLayout()
       "
       "Form1
       "
       Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
       Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
       Me.ClientSize = New System.Drawing.Size(564, 209)
       Me.Name = "Form1"
       Me.Text = "Title"
       Me.ResumeLayout(False)
   End Sub

End Class

      </source>