Image Array Issue..... Any ideas???

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Image Array Issue..... Any ideas???

 
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  #1
Feb 24th, 2008
I'm trying to create a burst on the screen by running through an image array. As a test I created 3 gif images named One, Two, and Three (each one displays the associated number). The problem is, there is no way to view each image in the array; the only image that is viewable by the human eye is the last one in the array (but each one is viewable if it is selected alone). Does anyone have any advice/links on a solution to this? Been googling this and can't find much help. My code is below.

Java Syntax (Toggle Plain Text) 
  1. burst = new BufferedImage[3];
  2.                 try
  3.                 {
  4.                 burst[0] = ImageIO.read(getClass().getResource("images\\one.gif"));
  5.                 burst[1] = ImageIO.read(getClass().getResource("images\\two.gif"));
  6.                 burst[2] = ImageIO.read(getClass().getResource("images\\three.gif"));
  7.                 //burst[3] = ImageIO.read(getClass().getResource(".gif"));
  8.                 //burst[4] = ImageIO.read(getClass().getResource(".gif"));
  9.                 //burst[5] = ImageIO.read(getClass().getResource(".gif"));
  10.                 //burst[6] = ImageIO.read(getClass().getResource(".gif"));
  11.                 //burst[7] = ImageIO.read(getClass().getResource(".gif"));
  12.                 //burst[8] = ImageIO.read(getClass().getResource(".gif"));
  13.                 //burst[9] = ImageIO.read(getClass().getResource(".gif"));
  14.                 }catch (Exception ex){System.out.println("Invalid Image");}
  15.  
  16.                 for(int i = 0; i < burst.length; i ++)
  17.                 {
  18.                     for(int t = 0; t < 100; t ++)
  19.                     {
  20.                         g2d.drawImage((BufferedImage)burst[i], 150, 150, null);
  21.                     }
  22.                 }
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Re: Image Array Issue..... Any ideas???

 
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  #2
Feb 24th, 2008
One thing to add is that this is all for a JPanel, not an applet. With an applet I'd say a good SLEEP statement would be good, but that's not going to work here.
Last edited by CaffeineCoder; Feb 24th, 2008 at 11:14 pm.
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Re: Image Array Issue..... Any ideas???

 
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  #3
Feb 24th, 2008
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Originally Posted by CaffeineCoder View Post
Java Syntax (Toggle Plain Text) 
  1.                 for(int i = 0; i < burst.length; i ++)
  2.                 {
  3.                     for(int t = 0; t < 100; t ++)
  4.                     {
  5.                         g2d.drawImage((BufferedImage)burst[i], 150, 150, null);
  6.                     }
  7.                 }
It looks to me like you are drawing all of the images at the same coordinates (150, 150), so wouldn't they all paint over each other and so you'd only see the last one? Also, why are you drawing each of them 100 times?
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Re: Image Array Issue..... Any ideas???

 
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Feb 24th, 2008
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Originally Posted by VernonDozier View Post
It looks to me like you are drawing all of the images at the same coordinates (150, 150), so wouldn't they all paint over each other and so you'd only see the last one? Also, why are you drawing each of them 100 times?
The whole objective to this part of the application is to illustrate an explosion. In theory, the array would have several images, each a different stage or level of the explosion's burst. The reason for the inner loop in my code segment was to attempt a delay so that each image in the array would be viewable instead of only the last. (am doing the explosion this way since the other way wasn't working too well).
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Re: Image Array Issue..... Any ideas???

 
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  #5
Feb 24th, 2008
So you are drawing images intentionally in the same space and intentionally drawing over them, and that is the goal, but is drawing too fast for the human eye to register? How about using the sleep command using threads to pause between images? So if there was a thread t and you wanted to pause for 250 milliseconds, you could do this:
Java Syntax (Toggle Plain Text) 
  1. t.sleep (250);
http://java.sun.com/j2se/1.4.2/docs/...tml#sleep(long)
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Re: Image Array Issue..... Any ideas???

 
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  #6
Feb 24th, 2008
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Originally Posted by VernonDozier View Post
So you are drawing images intentionally in the same space and intentionally drawing over them, and that is the goal, but is drawing too fast for the human eye to register? How about using the sleep command using threads to pause between images? So if there was a thread t and you wanted to pause for 250 milliseconds, you could do this:
Java Syntax (Toggle Plain Text) 
  1. t.sleep (250);
http://java.sun.com/j2se/1.4.2/docs/...tml#sleep(long)
Can I do that within a JPanel? If this was an applet that would be my first thought, but with this using JPanel instead of applet, didn't think that was an option.
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Re: Image Array Issue..... Any ideas???

 
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  #7
Feb 25th, 2008
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Originally Posted by CaffeineCoder View Post
Can I do that within a JPanel? If this was an applet that would be my first thought, but with this using JPanel instead of applet, didn't think that was an option.
I've done it with a JFrame. If it can be done with a JFrame, I imagine it could be done with a JPanel.
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Re: Image Array Issue..... Any ideas???

 
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Feb 25th, 2008
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Originally Posted by VernonDozier View Post
I've done it with a JFrame. If it can be done with a JFrame, I imagine it could be done with a JPanel.
Good to know. I'll try that today and see what I get. Thanks.
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Re: Image Array Issue..... Any ideas???

 
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  #9
Feb 26th, 2008
No-go. I'll try doing this in another file in the program but it still just only shows the last image in the array. Been going nuts on this part of the code for the last two months now (trying a few different ways). All I want is to get the app to render some sort of explosion.
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Re: Image Array Issue..... Any ideas???

 
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  #10
Feb 26th, 2008
You should update the image, repaint, and sleep in a separate thread or a Swing Timer. This animation tutorial might help:http://www.developer.com/java/article.php/893471
The important concept is that the AWT Event Queue needs to be allowed to repaint after you have altered the image.
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