Java-Gaming.org    
Featured games (79)
games approved by the League of Dukes
Games in Showcase (475)
Games in Android Showcase (106)
games submitted by our members
Games in WIP (530)
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  
  Yet Another Image Question...  (Read 1100 times)
0 Members and 1 Guest are viewing this topic.
Offline alcha

Junior Newbie




Java games rock!


« Posted 2003-05-11 22:10:03 »

Yes... I'm one of many java newbies who just can't seem to be able to load an image right.

So on to the Question:
I was using  Toolkit.getDefaultToolkit().getImage(...) to
load an image until one day i discovered it had asynchronous loading and so the drawing of a 1024x768 image wasn't exactly a great spectacle.

I tried to slip past this little glitch by drawing the acquired image to a BufferedImage and the on to the graphics object...
Darkness....The output was a (completely) black image.

But this could not daunt me (yet...). So i tried ImageIO.read(...). And yes ,the loading was synchronous.  But the image had transparent spots (.gif) which were black...(using the previous method no such problem occured) .

I know i'm doing something wrong in both of these methods...so if it's obvious by the above storytelling ,tell me. If not, say which code segment i should post.

Thanks guys
Offline Abuse

JGO Coder


Medals: 11


falling into the abyss of reality


« Reply #1 - Posted 2003-05-11 22:49:18 »

for the toolkit.getImage() asyncronous loading,
are you waiting for the loading to complete before drawing the image?

Make Elite IV:Dangerous happen! Pledge your backing at KICKSTARTER here! https://dl.dropbox.com/u/54785909/EliteIVsmaller.png
Offline Abuse

JGO Coder


Medals: 11


falling into the abyss of reality


« Reply #2 - Posted 2003-05-11 22:51:32 »

as for ImageIO.read()

I believe there is a bug with ImageIO.read() and the bitmask transparency of gifs.

The transparency will only be maintained, if the color marked as transparent is index 0 in the palette.

Make Elite IV:Dangerous happen! Pledge your backing at KICKSTARTER here! https://dl.dropbox.com/u/54785909/EliteIVsmaller.png
Games published by our own members! Check 'em out!
Legends of Yore - The Casual Retro Roguelike
Offline alcha

Junior Newbie




Java games rock!


« Reply #3 - Posted 2003-05-12 01:24:37 »

If i'm not mistaken (not a very possible scenario...)  Toolkit.getDefaultToolkit().getImage() starts loading
the image when you call graphics.drawImage(). So even if i draw it in a BufferedImage or a JComponent the procedure of loading is pretty much automated.

(love that wako guy... )
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.

ctomni231 (34 views)
2014-07-18 06:55:21

Zero Volt (30 views)
2014-07-17 23:47:54

danieldean (25 views)
2014-07-17 23:41:23

MustardPeter (27 views)
2014-07-16 23:30:00

Cero (42 views)
2014-07-16 00:42:17

Riven (44 views)
2014-07-14 18:02:53

OpenGLShaders (32 views)
2014-07-14 16:23:47

Riven (34 views)
2014-07-14 11:51:35

quew8 (30 views)
2014-07-13 13:57:52

SHC (66 views)
2014-07-12 17:50:04
HotSpot Options
by dleskov
2014-07-08 03:59:08

Java and Game Development Tutorials
by SwordsMiner
2014-06-14 00:58:24

Java and Game Development Tutorials
by SwordsMiner
2014-06-14 00:47:22

How do I start Java Game Development?
by ra4king
2014-05-17 11:13:37

HotSpot Options
by Roquen
2014-05-15 09:59:54

HotSpot Options
by Roquen
2014-05-06 15:03:10

Escape Analysis
by Roquen
2014-04-29 22:16:43

Experimental Toys
by Roquen
2014-04-28 13:24:22
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!