How to draw triangle in paintcomponent

[Raghu ram]

Anybody help me out.

For the Rectangle thr is a method called

g.drawRect(x,y,width,height);
But for the triangle there is no method.
Somebody told that we can draw using the method
g.drawLine(x,y,x1,y1);

Plss reply as soon as possible

[Kerry Shetline]

What you probably want is java.awt.Polygon.

To avoid nasty looking "jaggies", you might want to look into Graphics2D.setRenderingHint(...) to handle antialiasing. Here are a couple of utility methods I wrote for getting the current antialiasing state (in case you want to save and restore it) and for setting the state on and off:

  public static boolean getAntialias(Graphics g)
  {
    if (g instanceof Graphics2D)
      return RenderingHints.VALUE_ANTIALIAS_ON.equals(
               ((Graphics2D) g).getRenderingHint(RenderingHints.KEY_ANTIALIASING));
    else
      return false;
  }
 
  public static void setAntialias(Graphics g, boolean state)
  {
    if (g instanceof Graphics2D)
      ((Graphics2D) g).setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                                       state ? RenderingHints.VALUE_ANTIALIAS_ON :
                                               RenderingHints.VALUE_ANTIALIAS_OFF);
  }

[Raghu ram]

I didnt get your code. I want the code for drawing triangle

[Ulf Dittmer]

Hello "raghu1ram"-

On your way in you may have missed that we have a policy on screen names here at JavaRanch. Basically, it must consist of a first name, a space, and a last name, and not be obviously fictitious. Since yours does not conform with it, please take a moment to change it, which you can do right here.

As to your question, a triangle is a polygon with 3 line segments. So after defining the polygon, a call to drawPolygon will draw it.

Alternatively, you can draw it using 3 drawLine calls.

What do you have so far?

[Rob Spoor]

Point p1;
Point p2;
Point p3;
 
g.drawLine(p1.x, p1.y, p2.x, p2.y);
g.drawLine(p2.x, p2.y, p3.x, p3.y);
g.drawLine(p3.x, p3.y, p1.x, p1.y);

Now that's not that hard, is it?

Of course you can also use ints instead of Points if you already have those.

[Raghu ram]

Rob Prime Thanks for giving the solution.......