Trying to create a simple Paint application

[driiper]

Hello.

Im currently fiddling around with some drawing functions in Java, but i'm having some problems getting it to work.


So as the title states, im trying create a application which lets you paint inside the window. and atm i'm using the "fillOval" to draw on the screen.

I have managed to draw the Oval on the screen, but the OLD position which i already have drawed wont "save " itself.

I know that is because i have no function to handle the old drawings on the screen and it seems like its just getting overwrited.

Now my question is, how would i proceed in save the old oval position so its possible to actually draw stuff.

Variables:

 private int Start_posY = 0;
	 private int Start_posX = 0;
	 private int End_posY = 0;
	 private int End_posX = 0;
	 
	 
	 private int boldness = 10; //Tykkelsen

My paint component looks like this (Yeh i know, im new to drawing in java)

	public void paintComponent(Graphics g){
		super.paintComponent(g);
	
		g.setColor(Color.BLUE);
		g.fillOval(Start_posX, Start_posY, boldness, boldness); 
		

	}

and the Mouse(Event)(MotionEvent)

public void mouseDragged(MouseEvent arg0) {
		//System.out.println("Lol");	
		Start_posY = arg0.getY() - boldness /2;
		Start_posX = arg0.getX() - boldness /2;
		this.repaint();
	

public void mousePressed(MouseEvent e) {
		System.out.println("Lol");	
		Start_posY = e.getY() - boldness /2;
		Start_posX = e.getX() - boldness /2;
		repaint();
	}
}

Sorry for my bad english. and if there is anything thats unclear i will try to explain it in a better way

Driiper

[DarrylBurke]

Use a List<Shape> populated with Ellipse2D. You'll need to cast the Graphics reference to Graphics2D in your paintComponent(..) override, then iterate over the List drawing/filling each Shape.

Have you gone through the tutorial Trail: 2D Graphics (The Java™ Tutorials) ?

db

[driiper]

Have you gone through the tutorial Trail: 2D Graphics (The Java™ Tutorials) ?

I have not looked at these tutorials, but i will be going through them now. Also thanks for the answer regarding List<Shape> etc. ill try this! thanks!