CheckerBoard.cs

This code demonstrates how to create an image view in memory and write data into it to create a checkerboard pattern. Tiles are drawn pixel by pixel.

using IOLink;
using System.Diagnostics;
using System;
 
namespace Examples
{
    public class CheckerBoard
    {
        static ImageView Build(ulong sideLength)
        {
            // a checker board is always square
            VectorXu64 shape = new VectorXu64(sideLength, sideLength);
            // a checkerboard is black and white, so we use UINT8
            // pixel type
            DataType dtype = DataTypeId.UINT8;
            // create the image view in memory
            ImageView image = ImageViewFactory.Allocate(shape, dtype);
 
            // a checkerboard contains 10 tiles in both direction
            const ulong tileCount = 10;
 
            byte[] blackValue = new byte[]{ 0 }; // black pixel value to set
            byte[] whiteValue = new byte[]{ 255 }; // white pixel value to set
 
            ulong tilSizeInPixel = (ulong)(shape[0] / tileCount);
 
            // draw tiles in the image pixel by pixel
            for (ulong i = 0; i < shape[0]; ++i)
            {
                for (ulong j = 0; j < shape[1]; ++j)
                {
                    // compute the tile index
                    ulong tileIndexX = (ulong)(i / tilSizeInPixel);
                    ulong tileIndexY = (ulong)(j / tilSizeInPixel);
 
                    // set the pixel value to 0 or 255 depending
                    // on the tile index parity
                    if ((tileIndexX + tileIndexY) % 2 == 0)
                        image.Write(new VectorXu64(i, j), blackValue);
                    else
                        image.Write(new VectorXu64(i, j), whiteValue);
                }
            }
 
            return image;
        }
 
        public static void Main(string[] args)
        {
            Stopwatch sw = new Stopwatch();
            sw.Start();
 
            var imageCheckerBoard = Build(1000);
 
            sw.Stop();
            Console.WriteLine("Checkerboard image generated in " + sw.ElapsedMilliseconds + " ms");
 
            // display some information about the image
            Console.WriteLine(imageCheckerBoard.ToString());
 
            Console.WriteLine("SUCCESS");
        }
    }
}