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  pcx, tga or bmp. Any existing code for PROFESSIONAL use out there?  (Read 1325 times)
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Offline zappsweden

Junior Member




Java games rock!


« Posted 2006-04-28 13:00:09 »

I am developing a 2D Hexagon Wargame and need to have transparency and shadowing i.e need to use pcx, tga or bmp. Is there any existing easily used code for this for professional use?

I heard of JIMI, but I am not sure it is for professional use.

Also, do the image formats all work the same on different platforms?
Offline Kova

Senior Member





« Reply #1 - Posted 2006-04-28 13:37:00 »

you need to use that format becouse of transparancy / shadowing or you just need to use them? Why those formats?
Only thing I actually have to say it's that transparancy is supported in gifs and translucency in pngs.
Offline zappsweden

Junior Member




Java games rock!


« Reply #2 - Posted 2006-04-28 13:51:40 »

I need them for transparency and Shadowing.
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Offline oNyx

JGO Coder


Medals: 1


pixels! :x


« Reply #3 - Posted 2006-04-28 13:52:01 »

Just use a format which supports transparency. Eg for bitmask transparency you can use gif or 8bit pngs. For full alpha you can use 32bit pngs.

Using #FF00FF as color for the transparent areas is a very dated workaround for getting bitmask transparency into formats which doesnt support that by itself.

弾幕 ☆ @mahonnaiseblog
Offline zappsweden

Junior Member




Java games rock!


« Reply #4 - Posted 2006-04-28 14:07:29 »

Ok, Onyx. But how do I use those formats?

Currently i use the  Toolkit.getDefaultToolkit().getImage(String) but that only works for jpg or gif.

I saw a topic about ImageIO here ->
http://www.java-gaming.org/forums/index.php?topic=6952.0

but it has alot of classes like BufferedImage, ImageLoader, ... to fully grip before proceeding. How do i code it? any easy sample?

how do i go from Toolkit.getDefaultToolkit().getImage("c://mypic.jpg");

to simply using a png or tga?
Offline swpalmer

JGO Coder




Where's the Kaboom?


« Reply #5 - Posted 2006-04-28 14:24:08 »

The toolkit method WILL load a PNG as well. 

Toolkit.getDefaultToolkit().getImage("c:\\mypic.PNG");  // this works for Java 1.3 and beyond

But using ImageIO is recommended for Java 5 and above.  If you need loaders for more formats you can get them from the JAI Tools download - it has ImageIO loaders for a few more formats.

ImageIO is easy to use:

Image img = ImageIO.read("c:\\mypic.PNG");

You only need to mess around with ImageReaders and that stuff when you really need to control more about the process.

Offline oNyx

JGO Coder


Medals: 1


pixels! :x


« Reply #6 - Posted 2006-04-28 14:27:15 »

BufferedImage foo;
[...]
try{
foo=ImageIO.read(new BufferedInputStream(getClass().getResourceAsStream("/images/foo.png")));
}catch(IOException e){
e.printStackTrace();
}

ImageIO cant read TGAs right now (out of the box... there is a tga reader for it from realityinteractive).

You can find a simple demo application (source included) here:
http://kaioa.com/k/jarimage.jar

"c://mypic.jpg" is really really bad btw Smiley

edit: Oh and one advantage of ImageIO is that it loads synchronously. That means that the image is fully loaded after the method returned. So, you dont need to fiddle around with MediaTracker or anything like that.

弾幕 ☆ @mahonnaiseblog
Offline zappsweden

Junior Member




Java games rock!


« Reply #7 - Posted 2006-04-28 15:18:31 »

Relax Onyx. I use relatice paths for my software not the c://whatever.jpg i showed as example   Grin
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