Image noise: Difference between revisions

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=={{header|C sharp|C#}}==

<lang csharp>using System;

using System.~~Windows~~.~~Forms~~;

using System.Collections.Generic;

using System.ComponentModel;

using System.Drawing;

using System.Drawing.Imaging;

using System.Runtime.InteropServices;

using System.Linq;

using System.~~ComponentModel~~;

using System.Runtime.InteropServices;

using System.~~Collections~~.~~Generic~~;

using System.Windows.Forms;

class Program

{

static ~~int~~[] colors = { 0, 255 };

static byte[] colors = { 0, 255 };

static Size size = new Size(320, 240);

static Rectangle rectsize = new Rectangle(new Point(0, 0), size);

static int ~~numbytes~~ = size.Width * size.Height * 3;

static int numpixels = size.Width * size.Height;

static int numbytes = numpixels * 3;

static PictureBox pb;

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static Random rand = new Random();

static IEnumerable<byte> YieldVodoo(~~int numpixels~~)

static IEnumerable<byte> YieldVodoo()

{

// Yield 3 times same number (i.e 255 255 255) for numpixels/3 times.

// Yield 3 times same number (i.e 255 255 255) for numpixels times.

// Numpixels is number of pixels, it's divided by 3 because it's a RGB image.

for (int i = 0; i < numpixels ~~/ 3~~; i++)

for (int i = 0; i < numpixels; i++)

{

var tmp = colors[rand.Next(~~colors.Length~~)];

var tmp = colors[rand.Next(2)];

for (int j = 0; j < 3; j++)

{

yield return ~~(byte)~~tmp;

yield return tmp;

}

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static Image Randimg()

{

// Low-level bitmaps

⚫

var bitmap = new Bitmap(size.Width, size.Height);

⚫

var bitmap = new Bitmap(size.Width, size.Height);

var data = bitmap.LockBits(rectsize, ImageLockMode.WriteOnly, PixelFormat.Format24bppRgb);

var yielder = YieldVodoo(numbytes);

Marshal.Copy(

~~yielder~~.ToArray<byte>(), // source

YieldVodoo().ToArray<byte>(),// source

0, // start

data.Scan0, // scan0 is a pointer to low-level bitmap data

numbytes /* number of bytes to ~~write*/);~~

numbytes); // number of bytes in source

bitmap.UnlockBits(data);

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static void Main()

{

// TODO: Fix form size.

var form = new Form();

form.AutoSize = true;

form.Size = new Size(0, 0);

form.Text = "Test";

form.FormClosed += delegate

{

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worker = new BackgroundWorker();

worker.DoWork += delegate

{

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}

catch

{

// Just pass.

}

};

worker.RunWorkerAsync();

FlowLayoutPanel flp = new FlowLayoutPanel();

form.Controls.Add(flp);

pb = new PictureBox();

pb.Size = size;

//pb.Dock = DockStyle.Bottom;

~~form~~.~~Controls.Add(pb)~~;

flp.AutoSize = true;

~~form~~.~~Show~~();

flp.Controls.Add(pb);

form.Show();

Application.Run();

}