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Thread: Simple graphics practice on previous Java code

  1. #1
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    Default Simple graphics practice on previous Java code

    I am leaning Java basics. I wrote code to produce the following output



    the image on the right. I have a problem to make things touch each other at the middle of the screen. i. e. line going from the left upper corner touch lines going from the right bottom corner. Also, the output should have the same look when resizing the window. My code( Java pastebin - collaborative debugging tool )and ( Java pastebin - collaborative debugging tool ). I am not so good in math. Can anyone here help me to get the required output?

    Thanks in advance


  2. #2
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    Default Sorry I forgot to paste the code

    //Code Test Class
     
    import javax.swing.JFrame;
     
    public class DrawPanelTest
    {
     
    public static void main( String args[] )
    {
     
    // create a panel that contains our drawing
     
    DrawPanel panel = new DrawPanel();
     
    // create a new frame to hold the panel
     
    JFrame application = new JFrame();
     
    // set the frame to exit when it is closed
     
    application.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
     
    application.add( panel ); // add the panel to the frame
     
    application.setSize( 250, 250 ); // set the size of the frame
     
    application.setVisible( true ); // make the frame visible
     
    } // end main
     
    } // end class DrawPanelTest

    //code Draw panel
     
    import java.awt.Graphics;
     
    import javax.swing.JPanel;
     
    public class DrawPanel extends JPanel
     
    {
     
    // draws an X from the corners of the panel
     
    public void paintComponent( Graphics g )
     
    {
     
    // call paintComponent to ensure the panel displays correctly
     
    super.paintComponent( g );
     
    int width = getWidth(); // total width
     
    int height = getHeight(); // total height
     
    int i = 0, j = 0, k = 0;
     
    for ( i = 1; i <= 15 ; i++)
     
    {
     
    g.drawLine( 0, 0, j, height - k);
     
    j += width / 15;
     
    k += height / 15;
     
    }
     
    j = 0;
     
    k = 0;
     
    for ( i = 1; i <= 15 ; i++)
     
    {
     
    g.drawLine( 0, height, j, k);
     
    j += width / 15;
     
    k += height /15;
     
    }
     
    j = 0;
     
    k = 0;
     
    for ( i = 1; i <= 15 ; i++)
     
    {
     
    g.drawLine( width, 0, width - j, height - k);
     
    j += width / 15;
     
    k += height / 15;
     
    }
     
    j = 0;
     
    k = 0;
     
    for ( i = 1; i <= 15 ; i++)
     
    {
     
    g.drawLine( width, height, width - j, k);
     
    j += width / 15;
     
    k += height / 15;
     
    }
     
    } // end method paintComponent
     
    } // end class DrawPanel
    Last edited by JavaPF; June 17th, 2009 at 11:28 AM. Reason: Please don't paste line numbers!

  3. #3
    Senile Half-Wit Freaky Chris's Avatar
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    Default Re: Help with simple graphics practice

    Welcome to the forums

    The lines do meet in that picture :S, please use code tags, [ code ][/ code ] without the spaces also would you be as kind as to not use lines numbers -_-

    Chris

  4. #4
    mmm.. coffee JavaPF's Avatar
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    Default Re: Help with simple graphics practice

    Is the image on the left your example but you need to make it look like the image on the right?
    Please use [highlight=Java] code [/highlight] tags when posting your code.
    Forum Tip: Add to peoples reputation by clicking the button on their useful posts.

  5. #5
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    Default Re: Help with simple graphics practice

    The required output is the image on the right

  6. #6
    mmm.. coffee JavaPF's Avatar
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    Default Re: Help with simple graphics practice

    I just compiled the code you submitted amrawad_85 and I get the same result as the image on the right!

    I don't see a problem here?
    Please use [highlight=Java] code [/highlight] tags when posting your code.
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