VB.Net/2D/Interpolation Mode

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Interpolation Mode Demo

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()
    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
        End If
    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.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"
    End Sub
End Class