в 16:40, 26 мая 2010

2010-05-26T16:40:30Z

Admin: 1 версия

2010-05-26T12:55:10Z

1 версия

Новая страница

==Gray Scale Image==

<source lang="vbnet">Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class GrayScaleImage
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 g As Graphics = Me.CreateGraphics()
g.Clear(Me.BackColor)
Dim curBitmap As New Bitmap("yourfile.jpg")
g.DrawImage(curBitmap, 0, 0, curBitmap.Width, curBitmap.Height) "
Dim i As Integer
For i = 0 To 100
Dim j As Integer
For j = 0 To 100
Dim curColor As Color = curBitmap.GetPixel(i, j)
Dim ret As Integer = (curColor.R + curColor.G + curColor.B) / 3
"curBitmap.SetPixel(i, j, Color.FromArgb(ret, ret, ret))
Next j
Next i
g.DrawImage(curBitmap, 0, 0, curBitmap.Width, curBitmap.Height)
g.Dispose()
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>

==Pick a color from an Image==

<source lang="vbnet">Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class ColorPicker
public Shared Sub Main
Application.Run(New Form1)
End Sub
End class
Public Class Form1
Inherits System.Windows.Forms.Form
Public Sub New()
MyBase.New()
InitializeComponent()
End Sub
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing Then
If Not (components Is Nothing) Then
components.Dispose()
End If
End If
MyBase.Dispose(disposing)
End Sub
Private components As System.ruponentModel.IContainer
Friend WithEvents PictureBox1 As System.Windows.Forms.PictureBox
Friend WithEvents Label1 As System.Windows.Forms.Label
Friend WithEvents Label2 As System.Windows.Forms.Label
Friend WithEvents Label3 As System.Windows.Forms.Label
Friend WithEvents MainMenu1 As System.Windows.Forms.MainMenu
Friend WithEvents MenuItem1 As System.Windows.Forms.MenuItem
Friend WithEvents MenuItem2 As System.Windows.Forms.MenuItem
Friend WithEvents MenuItem3 As System.Windows.Forms.MenuItem
Friend WithEvents OpenFileDialog1 As System.Windows.Forms.OpenFileDialog
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
Me.PictureBox1 = New System.Windows.Forms.PictureBox
Me.Label1 = New System.Windows.Forms.Label
Me.Label2 = New System.Windows.Forms.Label
Me.Label3 = New System.Windows.Forms.Label
Me.MainMenu1 = New System.Windows.Forms.MainMenu
Me.MenuItem1 = New System.Windows.Forms.MenuItem
Me.MenuItem2 = New System.Windows.Forms.MenuItem
Me.MenuItem3 = New System.Windows.Forms.MenuItem
Me.OpenFileDialog1 = New System.Windows.Forms.OpenFileDialog
Me.SuspendLayout()
"
"PictureBox1
"
Me.PictureBox1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
Me.PictureBox1.Dock = System.Windows.Forms.DockStyle.Top
Me.PictureBox1.Image = Image.FromFile("YourFile.bmp")
Me.PictureBox1.Location = New System.Drawing.Point(0, 0)
Me.PictureBox1.Name = "PictureBox1"
Me.PictureBox1.Size = New System.Drawing.Size(292, 216)
Me.PictureBox1.TabIndex = 0
Me.PictureBox1.TabStop = False
"
"Label1
"
Me.Label1.Location = New System.Drawing.Point(24, 232)
Me.Label1.Name = "Label1"
Me.Label1.Size = New System.Drawing.Size(56, 24)
Me.Label1.TabIndex = 1
Me.Label1.Text = "R:"
"
"Label2
"
Me.Label2.Location = New System.Drawing.Point(112, 232)
Me.Label2.Name = "Label2"
Me.Label2.Size = New System.Drawing.Size(64, 24)
Me.Label2.TabIndex = 2
Me.Label2.Text = "G:"
"
"Label3
"
Me.Label3.Location = New System.Drawing.Point(208, 232)
Me.Label3.Name = "Label3"
Me.Label3.Size = New System.Drawing.Size(64, 24)
Me.Label3.TabIndex = 3
Me.Label3.Text = "B:"
"
"MainMenu1
"
Me.MainMenu1.MenuItems.AddRange(New System.Windows.Forms.MenuItem() {Me.MenuItem1})
"
"MenuItem1
"
Me.MenuItem1.Index = 0
Me.MenuItem1.MenuItems.AddRange(New System.Windows.Forms.MenuItem() {Me.MenuItem2, Me.MenuItem3})
Me.MenuItem1.Text = "File"
"
"MenuItem2
"
Me.MenuItem2.Index = 0
Me.MenuItem2.Text = "Open"
"
"MenuItem3
"
Me.MenuItem3.Index = 1
Me.MenuItem3.Text = "Exit"
"
"Form1
"
Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
Me.ClientSize = New System.Drawing.Size(292, 270)
Me.Controls.Add(Me.Label3)
Me.Controls.Add(Me.Label2)
Me.Controls.Add(Me.Label1)
Me.Controls.Add(Me.PictureBox1)
Me.Menu = Me.MainMenu1
Me.ResumeLayout(False)
End Sub
Dim pic As Bitmap
Dim c As System.Drawing.Color
Dim xwidth, yheight As Integer
Private Sub PictureBox1_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles PictureBox1.MouseDown
pic = PictureBox1.Image
xwidth = pic.Width
yheight = pic.Height
If e.X < xwidth And e.Y < yheight Then
c = pic.GetPixel(e.X, e.Y)
Label1.Text = "R:" + c.R.ToString
Label2.Text = "G:" + c.G.ToString
Label3.Text = "B:" + c.B.ToString
End If
End Sub
Private Sub MenuItem2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MenuItem2.Click
OpenFileDialog1.ShowDialog()
PictureBox1.Image = New Bitmap(OpenFileDialog1.FileName)
End Sub
Private Sub MenuItem3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MenuItem3.Click
End
End Sub
End Class</source>

==Recolor Image==

<source lang="vbnet">Imports System.Drawing
Imports System.Drawing.Imaging
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class RecoloringTranslation
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 g As Graphics = Me.CreateGraphics()
g.Clear(Me.BackColor)
Dim curBitmap As New Bitmap("yourfile.jpg")
Dim ptsArray As Single()() = {New Single() {1, 0, 0, 0, 0}, New Single() {0, 1, 0, 0, 0}, New Single() {0, 0, 1, 0, 0}, New Single() {0, 0, 0, 1, 0}, New Single() {0.9F, 0.0F, 0.0F, 0.0F, 1}}
Dim clrMatrix As New ColorMatrix(ptsArray)
Dim imgAttribs As New ImageAttributes
imgAttribs.SetColorMatrix(clrMatrix, ColorMatrixFlag.Default, ColorAdjustType.Default)
g.DrawImage(curBitmap, 0, 0, 200, 200)
g.DrawImage(curBitmap, New Rectangle(205, 0, 200, 200), 0, 0, curBitmap.Width, curBitmap.Height, GraphicsUnit.Pixel, imgAttribs)
curBitmap.Dispose()
g.Dispose()
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>

==Recolor image rotation==

<source lang="vbnet">Imports System.Drawing
Imports System.Drawing.Imaging
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class RecoloringRotation
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 degrees As Single = 45.0F
Dim r As Double = degrees * System.Math.PI / 180
Dim g As Graphics = Me.CreateGraphics()
g.Clear(Me.BackColor)
Dim curBitmap As New Bitmap("yourfile.jpg")
Dim ptsArray As Single()() = {New Single() {CSng(System.Math.Cos(r)), CSng(System.Math.Sin(r)), 0, 0, 0}, New Single() {CSng(-System.Math.Sin(r)), CSng(-System.Math.Cos(r)), 0, 0, 0}, New Single() {0.5F, 0, 1, 0, 0}, New Single() {0, 0, 0, 1, 0}, New Single() {0, 0, 0, 0, 1}}
Dim clrMatrix As New ColorMatrix(ptsArray)
Dim imgAttribs As New ImageAttributes
imgAttribs.SetColorMatrix(clrMatrix, ColorMatrixFlag.Default, ColorAdjustType.Default)
g.DrawImage(curBitmap, 0, 0, 200, 200)
g.DrawImage(curBitmap, New Rectangle(205, 0, 200, 200), 0, 0, curBitmap.Width, curBitmap.Height, GraphicsUnit.Pixel, imgAttribs)
curBitmap.Dispose()
g.Dispose()
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>

==Recolor image Scaling==

<source lang="vbnet">Imports System.Drawing
Imports System.Drawing.Imaging
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class RecoloringScaling
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 g As Graphics = Me.CreateGraphics()
g.Clear(Me.BackColor)
Dim curBitmap As New Bitmap("yourfile.jpg")
Dim ptsArray As Single()() = {New Single() {1, 0, 0, 0, 0}, New Single() {0, 0.8F, 0, 0, 0}, New Single() {0, 0, 0.5F, 0, 0}, New Single() {0, 0, 0, 0.5F, 0}, New Single() {0, 0, 0, 0, 1}}
Dim clrMatrix As New ColorMatrix(ptsArray)
Dim imgAttribs As New ImageAttributes
imgAttribs.SetColorMatrix(clrMatrix, ColorMatrixFlag.Default, ColorAdjustType.Default)
g.DrawImage(curBitmap, 0, 0, 200, 200)
g.DrawImage(curBitmap, New Rectangle(205, 0, 200, 200), 0, 0, curBitmap.Width, curBitmap.Height, GraphicsUnit.Pixel, imgAttribs)
curBitmap.Dispose()
g.Dispose()
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>

==Recolor image shearing==

<source lang="vbnet">Imports System.Drawing
Imports System.Drawing.Imaging
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class RecoloringShearing
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 g As Graphics = Me.CreateGraphics()
g.Clear(Me.BackColor)
Dim curBitmap As New Bitmap("yourfile.jpg")
Dim ptsArray As Single()() = {New Single() {1, 0, 0, 0, 0}, New Single() {0, 1, 0, 0, 0}, New Single() {0.5F, 0, 1, 0, 0}, New Single() {0, 0, 0, 1, 0}, New Single() {0, 0, 0, 0, 1}}
Dim clrMatrix As New ColorMatrix(ptsArray)
Dim imgAttribs As New ImageAttributes
imgAttribs.SetColorMatrix(clrMatrix, ColorMatrixFlag.Default, ColorAdjustType.Default)
g.DrawImage(curBitmap, 0, 0, 200, 200)
g.DrawImage(curBitmap, New Rectangle(205, 0, 200, 200), 0, 0, curBitmap.Width, curBitmap.Height, GraphicsUnit.Pixel, imgAttribs)
curBitmap.Dispose()
g.Dispose()
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>

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VB.Net Tutorial/2D Graphics/Image Color - История изменений

в 16:40, 26 мая 2010

Admin: 1 версия