.NET (Core and Framework)

bimbambumbum wrote:

Do you know which copying method is fastest?

bimbambumbum wrote:

MSDN doc seems sparse

bimbambumbum wrote:

.do you have a way to get rid of this?

bimbambumbum wrote:

mapping from FFT log-outputs to a colorrange

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using fftwlib;


namespace GDI_evaluation
{
    public partial class Form1 : Form
    {
        Timer timer = new Timer();
        Graphics g;

        int XREF = 50;
        int YREF = 50;

        // Bitmap
        Bitmap myBitmap;
        Random rnd;
        int tIndx = 0;

        public Form1()
        {
            InitializeComponent();

            rnd = new Random();

            this.SetStyle(
           ControlStyles.UserPaint |
           ControlStyles.AllPaintingInWmPaint |
           ControlStyles.OptimizedDoubleBuffer, true);

            myBitmap = new Bitmap(768, 512, PixelFormat.Format24bppRgb);

            timer.Tick += new EventHandler(timer_tick);
            timer.Interval = 1000 / 25;      // opdater grafik 50 /sekund!!!
            timer.Enabled = true;
            timer.Start();
        }

        void timer_tick(object sender, EventArgs e)
        {
            this.Refresh(); // Update GUI
        }

        private void Form1_Paint(object sender, PaintEventArgs e)
        {
        }

        protected override void OnPaint(PaintEventArgs pe)
        {
            g = pe.Graphics;

            Rectangle block1 = new Rectangle(XREF + tIndx, YREF, myBitmap.Width - tIndx, myBitmap.Height);
            g.DrawImage(myBitmap, block1, 0, 0, myBitmap.Width - tIndx, myBitmap.Height, GraphicsUnit.Pixel);
            Rectangle block2 = new Rectangle(XREF, YREF, tIndx, myBitmap.Height);
            g.DrawImage(myBitmap, block2, myBitmap.Width - tIndx, 0, tIndx, myBitmap.Height, GraphicsUnit.Pixel);


            int tIndx2 = tIndx - 1;
            if (tIndx2 < 0)
                tIndx2 = myBitmap.Width - 1;

            // Insert new FFT data
            for (int ii = 0; ii < myBitmap.Height; ii++)
                myBitmap.SetPixel(myBitmap.Width - 1 - tIndx2, ii, Color.FromArgb(rnd.Next(255), rnd.Next(255), rnd.Next(255)));

            if (++tIndx == myBitmap.Width)
                tIndx = 0;

        }
    }
}

bimbambumbum wrote:

opdater grafik 50 /sekund!!!

bimbambumbum wrote:

I'm manipulating the bitmap directly

class MyClass
{
    private int value;

    public MyClass(int value)
    {
        // value refers to the parameter
        // to use the field, as it has the same name, use this.value
        this.value = value;
    }
}

bimbambumbum wrote:

BitmapCanvas.Visible = false;

Fresh-Grass wrote:

If my applications (mainly WinForms, C#) work in older versions of .NET Framework, should I publish them in older or new version? Is there any criteria that I should look for?