Thread: Draw dot by dot?

  1. 10-11-2006 #1
    fiska
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    Draw dot by dot?

    Hi folks,

    I'm trying to implement Brasenham's algorithm, I need to draw a line on a given coordinates (x1,y1,x2,y2). The problem is that when I try to do this in C# (GDI+) I have this function drawLine, but this draws the line itself.

    I need to construct the line myself, point by point (pixel by pixel), can anyone show me on how to draw only one pixel at the time, not connect two point. I will need to draw the line recursively, one pixel at the time so in the end I end up with the complete line.

    advice is welcomed in any language C#, Java, C++ ?

    Thanx in prior
  2. 10-11-2006 #2
    Salem
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    There are a huge number of sites which detail the algorithm - just read a few of them.
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  3. 10-11-2006 #3
    fiska
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    I know the algorithms perfectly well, I just have problems implementing it.
    I dont know how to draw a single point so then I can then construct the whole line dot by dot, it is perfectly well described in my thread above.

    can anyone show me on how to draw only one pixel at the time
    I did not ask about algorithms itself, it is rather a simple question.
    Last edited by fiska; 10-11-2006 at 06:39 AM.
  4. 10-11-2006 #4
    GanglyLamb
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    Since this is obviously for learning purposes only , why not just use DrawRectangle ( or something like that ) with a width and height of 1 pixel.

    I know it's not the best solution , but I've looked at msdn Graphics documentation at a glance and didn't see any method to just draw a pixel.

    C#, Java, C++
    >>
    Java: http://forums.java.net/jive/thread.j...ssageID=111831

    Using the windows GDI: http://www.toymaker.info/Games/html/gdi.html
    Last edited by GanglyLamb; 10-11-2006 at 09:43 AM.
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