Generating an image of squares?

This is a discussion on Generating an image of squares? within the C# Programming forums, part of the General Programming Boards category; Hi, I'm having some trouble to generate this image, with my code: http://img81.imageshack.us/img81/6639/imagejm8.jpg My current problem is that I can't ...

  1. #1
    Registered User
    Join Date
    Jul 2007
    Posts
    53

    Generating an image of squares?

    Hi,

    I'm having some trouble to generate this image, with my code:

    http://img81.imageshack.us/img81/6639/imagejm8.jpg

    My current problem is that I can't get the outer spacing around the green squares to appear. I've defined "g" as the outer spacing of the green squares, except its not producing the results that I need. Also I have trouble trying to generate the middle rectangles, which are double the width of the squares.

    Can someone please help me with these problems?


    Here's my code:
    Code:
    namespace asn
    {
        public partial class Question : Form
        {
            public Question()
            {
                Text = "Question ";
                BackColor = Color.Blue;
                ResizeRedraw = true;
    
                SetStyle(ControlStyles.UserPaint, true);
                SetStyle(ControlStyles.AllPaintingInWmPaint, true);
                SetStyle(ControlStyles.DoubleBuffer, true);
            }
    
            protected override void OnPaint(PaintEventArgs e)
            {
                Graphics grfx = e.Graphics;
                
                grfx.SmoothingMode = SmoothingMode.HighQuality;
                grfx.PixelOffsetMode = PixelOffsetMode.HighQuality;
    
                int cx = ClientSize.Width;
                int cy = ClientSize.Height;
    
                int half_point = cx / 2;
                int s = 10;
                int g = 20; //for the outer gap
    
                if (cx > half_point)
                {
                    SolidBrush black_brush = new SolidBrush(Color.Black);
                    Rectangle rect = new Rectangle(0, 0, half_point, cy);
                    grfx.FillRectangle(black_brush, rect);
                }
    
                //Generate the small squares
                for (int i = 0; i < cx; i++)
                {
                    i += s;
                    for (int j = 0; j < cy; j++)
                    {
                        SolidBrush green_brush = new SolidBrush(Color.GreenYellow);
                        grfx.FillRectangle(green_brush, i, j, s, s);
    
                        if (i == half_point)
                        {
                            grfx.FillRectangle(green_brush, half_point, j, s * 2, s);
                        }
                        j += g;
                    }
                    
                    i += 10;
                }
            }
    }
    Last edited by vopo; 09-21-2008 at 02:55 AM.

  2. #2
    Registered User
    Join Date
    Aug 2008
    Posts
    188
    a) is the size of the control fixed? if not, you hardcoded g to 20, but the width/height changes.
    b) you are generating way too many green squares (cx * cy)
    c) you should call Dispose() on all those brushes you create, or just use the static class Brushes to use what you want.

  3. #3
    Registered User
    Join Date
    Jul 2007
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    53
    The size of the image is not fixed, its designed to stretch. While its stretching its suppose to add more squares as it stretches on the x and y axis.

  4. #4
    Registered User
    Join Date
    Oct 2008
    Posts
    85
    having looked at the img you provided may i suggest that the "rectangles " in the middle are not rectangle but 2 squares side by side ?

    this may make your life easier.

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