[RESOLVED]Java draw circles on image

hello, i found the answer to my last post finally. now i have a new task to implement. I need to draw a circle or oval when a point on an image is clicked. For instance if you were to click on the eye of a person in a image in a jpanel, i need to draw a red circle of where i just clicked. i am researdhing and figured out this, and i can post more of my code when i have more time, for i am pressed right now...


some thing laong the lines of...

Code:

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        setColor(red);
        fillCircle(newX,newY, 20);

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my only question now si what does the 20 mean ?

remind you i am very new to java, but i will sit down later with my manual to try to implement. I'm sure it would be more helpful if i posted my code, but If anyone knows of what along the lines I am trying to do you willingness to help would be appercaited thanks. justin

I'm almost sure you didn't write any of the code, because if you did. You'd know that fillCircle is not Java built-in method. And since you are not calling it from any other object then I'd take a wild guess and say the body of the method is in your class so take another look and tell us what does it look like!!

i know, it not mine at all, i was just running thru a manual trying to get an idea of what i'm going for, just so other know. here's my code....

Code:

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private class mouseImgEventHandler implements MouseListener, MouseMotionListener {

      //empty body of methods.
      public void mousePressed(MouseEvent e) {}
      public void mouseReleased(MouseEvent e) {}
      public void mouseEntered(MouseEvent e) {}
      public void mouseExited(MouseEvent e) {}
      public void mouseMoved(MouseEvent e) {}
      public void mouseDragged(MouseEvent e) {}

      //get X-Y location when mouse is clicked.
      public void mouseClicked(MouseEvent e) {
        int currentX = e.getX();
        int currentY = e.getY();

        //display X-Y on the message board.
        if(panelID == 1)
            parent.leftDisplay.setText("X:  " + currentX + ",  Y:  " + currentY);
        if(panelID == 2)
            parent.rightDisplay.setText("X:  " + currentX + ",  Y:  " + currentY);
        if(panelID == 3)
            parent.resultDisplay.setText("X:  " + currentX + ",  Y:  " + currentY);
        //repaint();
      }
  }

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i just put that up the as an example of what i am tryign to do.

based on the x/y coordinates i get when i click the mouse, I want to draw circles..

Code:

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public void paintComponent(Graphics graphics) {
      Graphics2D g = (Graphics2D)graphics.create();
      // eyes
      g.setColor(Color.red);
      g.fillOval(30, 30, 8, 8);
      g.fillOval(62, 30, 8, 8);

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.but how do i pass the mouse coordnates to the drawing of the oval ?

Code:

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    if(panelID == 1)
            parent.leftDisplay.setText("X:  " + currentX + ",  Y:  " + currentY);
      // eyes
      g.setColor(Color.red);
      g.fillOval(30, 30, 8, 8);
      g.fillOval(62, 30, 8, 8);

---

and where would i incldue a line like this

Code:

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public void paintComponent(Graphics graphics) {
      Graphics2D g = (Graphics2D)graphics.create();

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...at the begginign of my mouse handler, or some where else ?



does that clear my idea more, i thanks you again for stopping to help. justin

Quote:

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but how do i pass the mouse coordnates to the drawing of the oval ?

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Are you serious??

Code:

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        int currentX = e.getX();
        int currentY = e.getY();

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Quote:

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and where would i incldue a line like this

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Anywhere you want, just make sure you declare the object before you start using it
And BTW it's

Code:

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Graphics2D g = (Graphics2D)graphics;

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i'm sorry so sorry, like i say i am a begginer. No formal learning/training in this.

so....

Code:

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      if(panelID == 1)
      parent.leftDisplay.setText("X:  " + currentX + ",  Y:  " + currentY);
      // eyes
      g.setColor(Color.red);
      g.fillOval(currentX, currentY, 8, 8);

---

i think thats what i'm going for, will that draw a small oval on the spot that i click ??
thanks again - justin

here's my code

Code:

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// mouse event handler, as an inner class of ImagePanel class.
  //
  private class mouseImgEventHandler implements MouseListener, MouseMotionListener {

      //empty body of methods.
      public void mousePressed(MouseEvent e) {}
      public void mouseReleased(MouseEvent e) {}
      public void mouseEntered(MouseEvent e) {}
      public void mouseExited(MouseEvent e) {}
      public void mouseMoved(MouseEvent e) {}
      public void mouseDragged(MouseEvent e) {}

      //get X-Y location when mouse is clicked.
      public void mouseClicked(MouseEvent e) {
        int currentX = e.getX();
        int currentY = e.getY();
        Graphics2D g = (Graphics2D)graphics;

        //display X-Y on the message board.
        if(panelID == 1)
            parent.leftDisplay.setText("X:  " + currentX + ",  Y:  " + currentY);
                // eyes
                      g.setColor(Color.red);
                      g.fillOval(currentX, currentY, 8, 8);
        if(panelID == 2)
            parent.rightDisplay.setText("X:  " + currentX + ",  Y:  " + currentY);
        if(panelID == 3)
            parent.resultDisplay.setText("X:  " + currentX + ",  Y:  " + currentY);
        //repaint();
      }
  }

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here's my errors...

Quote:

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UIDDemo1.java:349: cannot find symbol
symbol : variable graphics
location: class ImagePanel.mouseImgEventHandler
Graphics2D g = (Graphics2D)graphics;
^
1 error

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.....i will continue working on this code and i'm on my way to work. i thanks you for all your time and effort !!! justin

replace

Code:

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Graphics2D g = (Graphics2D)graphics;

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with

Code:

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Graphics2D g = (Graphics2D)this.getGraphics();

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thaks again but i keep gettin an error...

Code:

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UIDDemo1.java:350: cannot find symbol
symbol  : method getGraphics()
location: class ImagePanel.mouseImgEventHandler
        Graphics2D g = (Graphics2D)this.getGraphics();
                                  ^
1 error

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..do i need to import something at the begging of the file so i can call Graphics ? -justin

Does your class extend "JFrame, JPanel, Panel, Applet or ...etc"? This method "getGraphics" is inherited from the component class

it's a class that uses jpanel..

Code:

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class ImagePanel extends JPanel {

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remove the "this", just use the "getGraphics();"

awesome dude, thansk for all your help man. it works, it draws the circles !! i am so thanksful, I have learned alot from you over this. Thanks again for helping...I'm sure i'll have more questions, but now this topics is resolved. if i need more info i'll be sure to ask again ! - justin