Java-Gaming.org    
Featured games (81)
games approved by the League of Dukes
Games in Showcase (497)
Games in Android Showcase (114)
games submitted by our members
Games in WIP (563)
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  
  Transforming my background sphere  (Read 688 times)
0 Members and 1 Guest are viewing this topic.
Offline Breakfast

Senior Member




for great justice!


« Posted 2003-05-11 15:48:04 »

I want to transform my background sphere to create a day/night cycle type effect (starting out by using a simple blue+sun -> black+moon background texture and rotating the whole thing around)  but (imagine my surprise) I don't seem to be able to access it. The relevant scenegraph code looks like this:

1  
2  
3  
4  
5  
6  
7  
8  
9  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
Background bg = new Background();
bg.setApplicationBounds(bounds);
bg.setCapability(Background.ALLOW_GEOMETRY_READ);
bg.setCapability(Background.ALLOW_GEOMETRY_WRITE);
       
BranchGroup bgGeometry = new BranchGroup();
     
Appearance App = new Appearance();
        try {
            Texture tex = new TextureLoader(new java.net.URL(filePath+"skysec2.jpg"), this).getTexture();
            App.setTexture(tex);
            System.out.println("Looks like the background loaded!");
        }
catch (Exception e)
        {
            e.printStackTrace();
        }
       
Sphere outerWorld = new Sphere( 1.0f, Primitive.GENERATE_TEXTURE_COORDS | Primitive.GENERATE_NORMALS_INWARD, App);
TransformGroup outerGit = new TransformGroup();
outerGit.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
outerGit.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
outerGit.addChild(outerWorld);
       
bgGeometry.addChild(outerGit);  
SkyBehaviour bav = new SkyBehaviour(outerGit);
bgGeometry.addChild(bav);
bg.setGeometry(bgGeometry);
objRoot.addChild(bg);


The error comes during the initialisation of the SkyBehaviour, where I get a NullPointerException in Transform3D.getWithLock from TransformGroupRetained.getTransform from a normal TransformGroup.getTransform, which is called when I first try and read the transform of the transformgroup. It looks to me as though this is something to do with it's priviledged position as part of the Background geometry. But that would be really annoying, so surely it can't be the case...

Am I doing something obviously wrong? Is there any easy way to move the background geometry or to move the texture on it?
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.

BurntPizza (22 views)
2014-09-19 03:14:18

Dwinin (35 views)
2014-09-12 09:08:26

Norakomi (62 views)
2014-09-10 13:57:51

TehJavaDev (89 views)
2014-09-10 06:39:09

Tekkerue (44 views)
2014-09-09 02:24:56

mitcheeb (65 views)
2014-09-08 06:06:29

BurntPizza (47 views)
2014-09-07 01:13:42

Longarmx (35 views)
2014-09-07 01:12:14

Longarmx (40 views)
2014-09-07 01:11:22

Longarmx (36 views)
2014-09-07 01:10:19
List of Learning Resources
by Longor1996
2014-08-16 10:40:00

List of Learning Resources
by SilverTiger
2014-08-05 19:33:27

Resources for WIP games
by CogWheelz
2014-08-01 16:20:17

Resources for WIP games
by CogWheelz
2014-08-01 16:19:50

List of Learning Resources
by SilverTiger
2014-07-31 16:29:50

List of Learning Resources
by SilverTiger
2014-07-31 16:26:06

List of Learning Resources
by SilverTiger
2014-07-31 11:54:12

HotSpot Options
by dleskov
2014-07-08 01:59:08
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!