VB.Net Tutorial/2D Graphics/InterpolationMode — различия между версиями
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Текущая версия на 15:54, 26 мая 2010
Interpolation mode
<source lang="vbnet">Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class InterpolationModeDemo
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) Dim bm As New Bitmap("yourfile.jpg") e.Graphics.DrawImage(bm, 10, 10) Dim x As Integer = 10 Dim y As Integer = 120 DrawSample(e.Graphics, bm, Drawing2D.InterpolationMode.Default, x, y) DrawSample(e.Graphics, bm, Drawing2D.InterpolationMode.Low, x, y) DrawSample(e.Graphics, bm, Drawing2D.InterpolationMode.High, x, y) DrawSample(e.Graphics, bm, Drawing2D.InterpolationMode.Bilinear, x, y) x = 10 y += 100 DrawSample(e.Graphics, bm, Drawing2D.InterpolationMode.Bicubic, x, y) DrawSample(e.Graphics, bm, Drawing2D.InterpolationMode.NearestNeighbor, x, y) DrawSample(e.Graphics, bm, Drawing2D.InterpolationMode.HighQualityBilinear, x, y) DrawSample(e.Graphics, bm, Drawing2D.InterpolationMode.HighQualityBicubic, x, y) End Sub Private Sub DrawSample(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 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</source>