Dashed line drawing in java graphics.

Hello Friends,

 While working in my project i was searching how to draw a dashed line

in Graphics not in Graphics2D.

So i get this code and it is superb for drawing dash lines or rectangulars.

Just pass the line points and assign your dash length and space length.

See the below function........

////pass the line point x1,y1 and point 2 as x2 and y2

public void drawDashedLine(Graphics g, int x1, int y1, int x2,

                                                   int y2, double dash_length, double space_length)

{

          ///if both the points are same

          if ((x1 == x2) && (y1 == y2))

          {

                   g.drawLine(x1, y1, x2, y2);

                   return;

          }

          ///calculating line length

          double linelength = Math.sqrt((x2 - x1) * (x2 - x1) + (y2 - y1) * (y2 - y1));

          double yincrement = (y2 - y1) / (linelength / (dash_length + space_length));

          double xincdashspace = (x2 - x1) / (linelength / (dash_length + space_length));

          double yincdashspace = (y2 - y1) / (linelength / (dash_length + space_length));

          double xincdash = (x2 - x1) / (linelength / (dash_length));

          double yincdash = (y2 - y1) / (linelength / (dash_length));

          int counter = 0;

          for (double i = 0; i < linelength - dash_length; i += dash_length + space_length)

          {

                   g.drawLine((int)(x1 + xincdashspace * counter),

                               (int)(y1 + yincdashspace * counter),

                               (int)(x1 + xincdashspace * counter + xincdash),

                                (int)(y1 + yincdashspace * counter + yincdash));

                   counter++;

          }

          if ((dashlength + spacelength) * counter <= linelength)

                   g.drawLine((int)(x1 + xincdashspace * counter),

                               (int)(y1 + yincdashspace * counter), x2, y2);

}

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