Java-Gaming.org    
Featured games (91)
games approved by the League of Dukes
Games in Showcase (581)
games submitted by our members
Games in WIP (500)
games currently in development
News: Read the Java Gaming Resources, or peek at the official Java tutorials
 
    Home     Help   Search   Login   Register   
Pages: [1]
  ignore  |  Print  
  How to use layers to write my 2D game  (Read 2001 times)
0 Members and 1 Guest are viewing this topic.
Offline rodteixo

Junior Newbie




Java games rock!


« Posted 2002-12-26 09:46:25 »

I am trying to use java.awt.Panel as a layer but is not working because i cant set the full transparency of the panel's background.

I am trying this, but does not set the panel's background alfha channel
1  
2  
Color cl = new Color(0,0,0,0.5f);
Panel.setBackground(cl);


the color still 100% black on panel's background.

Thanks
Rodrigo.
Offline leknor

Junior Member




ROCK!!!


« Reply #1 - Posted 2002-12-26 13:42:59 »

You won't get transparancy with java.awt.Panel any time soon. In AWT land Components must fill their rectangle.

You may be able to do what you desribe with a javax.swing.JPanel and a javax.swing.JLayeredPane or if you  only need two layers than the contentPane and glassPane of a JPanel may be enough. I personally haven't tried that so it may not work.

Finally you could create an in memory image and do your compositing in it before you paint it to a Panel.
Offline Harley Rana

Junior Member




Java games rock!


« Reply #2 - Posted 2002-12-27 01:53:35 »

panels.setOpaque (false);

This works with most components, but not frames, tree, list,etc.

If you want to used layered rendering mixed with swing stuff have a look at http://developer.java.sun.com/developer/Books/2dgraphics/glfWebAll.zip. Its a Graphics framework from Sun which simplifies alot of layered rendering work.
Harley.
Games published by our own members! Check 'em out!
Legends of Yore - The Casual Retro Roguelike
Offline rodteixo

Junior Newbie




Java games rock!


« Reply #3 - Posted 2002-12-30 08:38:11 »

The command setOpaque(boolean) from JComponent realy does not work with any of its subclasses (JPanel, JInternalFrame).

No matter the method isOpaque() return false, the Component still opaque.

Someone can explain it.

thx.
Offline JuddMan

Senior Member


Medals: 1


Your Ad Here


« Reply #4 - Posted 2002-12-30 09:26:00 »

i'm not sure if this good advice but you might try an overlayLayout on a JPanel.
Pages: [1]
  ignore  |  Print  
 
 
You cannot reply to this message, because it is very, very old.

 

Add your game by posting it in the WIP section,
or publish it in Showcase.

The first screenshot will be displayed as a thumbnail.

xsi3rr4x (64 views)
2014-04-15 18:08:23

BurntPizza (62 views)
2014-04-15 03:46:01

UprightPath (75 views)
2014-04-14 17:39:50

UprightPath (58 views)
2014-04-14 17:35:47

Porlus (76 views)
2014-04-14 15:48:38

tom_mai78101 (101 views)
2014-04-10 04:04:31

BurntPizza (161 views)
2014-04-08 23:06:04

tom_mai78101 (256 views)
2014-04-05 13:34:39

trollwarrior1 (209 views)
2014-04-04 12:06:45

CJLetsGame (216 views)
2014-04-01 02:16:10
List of Learning Resources
by SHC
2014-04-18 03:17:39

List of Learning Resources
by Longarmx
2014-04-08 03:14:44

Good Examples
by matheus23
2014-04-05 13:51:37

Good Examples
by Grunnt
2014-04-03 15:48:46

Good Examples
by Grunnt
2014-04-03 15:48:37

Good Examples
by matheus23
2014-04-01 18:40:51

Good Examples
by matheus23
2014-04-01 18:40:34

Anonymous/Local/Inner class gotchas
by Roquen
2014-03-11 15:22:30
java-gaming.org is not responsible for the content posted by its members, including references to external websites, and other references that may or may not have a relation with our primarily gaming and game production oriented community. inquiries and complaints can be sent via email to the info‑account of the company managing the website of java‑gaming.org
Powered by MySQL Powered by PHP Powered by SMF 1.1.18 | SMF © 2013, Simple Machines | Managed by Enhanced Four Valid XHTML 1.0! Valid CSS!