Looped repaint of display area

[gligor_kot]

Hi everyone,

I am a new member of this forum and I need your help for a little problem I have.

I have this piece of code in my main function:

while (true) {
   if (simRunning) {
      da.repaint();
      fpsGA.repaint();
      vehiclesNumberGA.repaint();
   }
}

The purpose of the code is to update the display area, and a few graph areas while my simulation is running. This worked perfectly for a while, but recently I think I've updated to a newer version of JDK and now the program doesn't seem to run the repaints if my simRunning boolean is true.

What is even more interesting, when I go to debug mode it does run the repaints when my simRunning is true. So only when I normally run my application I have the problem with the repaints.

Any suggestion will be appreciated.

Thanks,

Gix

[Eranga]

Just updating the JDK couldn't cause for this, hard to believe that. Can you show up your code here, which we can have an idea what's you've done.

[gligor_kot]

My code is pretty huge, so i will just post the part I guess you need to determine what the problem is. The trick is that the code hasn't changed from what it was before I upgraded and after I upgraded, and while before it worked now it doesn't.

This is the display area (da) class paint function, the bolded code part functions will be given below:

public void paintComponent(Graphics g) {
			statBar.setMessage(lastStatusMessage
					+ "                                      x = " + mouseXMove
					+ ",  y = " + mouseYMove);

			Graphics2D g2 = (Graphics2D) g;

			g2.translate(xOffset, yOffset);
			g2.scale(ZOOM, ZOOM);
			g2.setBackground(new Color(162, 205, 90));

			g2.clearRect((int) ((xOffset * -1) / ZOOM),
					(int) ((yOffset * -1) / ZOOM), (int) (getWidth() / ZOOM),
					(int) (getHeight() / ZOOM));
			g2.setClip((int) ((xOffset * -1) / ZOOM),
					(int) ((yOffset * -1) / ZOOM), (int) (getWidth() / ZOOM),
					(int) (getHeight() / ZOOM));

			g2.addRenderingHints(new RenderingHints(
					RenderingHints.KEY_ANTIALIASING,
					RenderingHints.VALUE_ANTIALIAS_ON));

			[B]trafficMap.moveVehicles(frameRate);
			trafficMap.drawMap(g2);[/B]

			// Start and End Positions
			g2.setFont(new Font("Trebuchet MS", 0, 6));
			g2.setColor(new Color(238, 154, 0));
			if (routeStart != null) {
				g2.fillOval(routeStart.getXLoc() - 10,
						routeStart.getYLoc() - 10, 20, 20);
				g2.setColor(Color.black);
				g2.drawString("Start", routeStart.getXLoc() - 7, routeStart
						.getYLoc() + 2);
			}

			g2.setColor(new Color(238, 154, 0));
			if (routeEnd != null) {
				g2.fillOval(routeEnd.getXLoc() - 10, routeEnd.getYLoc() - 10,
						20, 20);
				g2.setColor(Color.black);
				g2.drawString("End", routeEnd.getXLoc() - 5,
						routeEnd.getYLoc() + 2);
			}

			if (showMouseDrag) {
				g2.setColor(Color.black);
				g2.drawLine(mouseX1, mouseY1, mouseX2, mouseY2);
			}
		}

Here's the trafficMap draw function:

public void drawMap(Graphics g) {
		TrafficSim.startRefreshTime = System.currentTimeMillis();

		Graphics2D g2 = (Graphics2D) g;
		g2.setFont(new Font("Trebuchet MS", 0, 6));

		// if we have put background Map image
		if (bckgImage != null)
			g2.drawImage(bckgImage, 0, 0, null);

		// Roads
		for (Road r : roads) {
			[B]r.drawRoad(g2, new Color(139, 139, 131));[/B]
		}

		for (Road r : roads) {
			[B]r.drawVehicles(g2);[/B]
		}

		TrafficSim.endRefreshTime = System.currentTimeMillis();

		TrafficSim.simulationTime = (int) (TrafficSim.endRefreshTime - TrafficSim.simulationStart) / 100;

		TrafficSim.waitRefresh = TrafficSim.endRefreshTime
				- TrafficSim.startRefreshTime;
		if (TrafficSim.waitRefresh < 1)
			TrafficSim.waitRefresh = 1;

		TrafficSim.frameRate = (double) 1000;
		TrafficSim.frameRate /= (double) TrafficSim.waitRefresh;
	}

The draw road function and the draw vehicle functions only draws polygons of those classes at the appropriate spots.

But the code i am posting is not a problem at all... the problem is in the while loop I posted in my first post. Here's my main function:

public static void main(String args[]) {
		new TrafficSim();
		
		while (true) {
			if (simRunning) {
				da.repaint();
				fpsGA.repaint();
				vehiclesNumberGA.repaint();
			}
		}
	}

So basically, the program is stuck in the while loop during execution and should repaint my components when I set simRunning to true. But now, even if I put something of the sort:

System.out.println(simRunning);

which will print "true", it will still refuse to go inside and execute the repaints in the if statement...

[gligor_kot]

I forgot to add that I am running this on Ubuntu Linux 9.04