Hi Renaud,
Thanks for your advice, but unfortunaly it didn't work.
This is my code :
public void createAppearances()
{
Color3f black = new Color3f(0.0f, 0.0f, 0.0f);
Color3f deepRed = new Color3f(0.9f, 0.2f, 0.1f);
Color3f royalBlue = new Color3f(0.1f, 0.3f, 0.9f);
Color3f white = new Color3f(1.0f, 1.0f, 1.0f);
mat = new Material[2];
app = new Appearance[2];
ta = new TextureAttributes[2];
mat[0] = new Material(royalBlue,royalBlue,royalBlue,white, 1.0f);
mat[1] = new Material(deepRed,deepRed,deepRed,white, 1.0f);
for (int i = 0; i < 2; i++) {
app[i] = new Appearance();
ta[i] = new TextureAttributes();
}
app[0].setMaterial(mat[0]);
app[1].setMaterial(mat[1]);
app[0].setTextureAttributes(ta[0]);
app[1].setTextureAttributes(ta[1]);
try{
texLod0 = new TextureLoader(new java.net.URL("file:sign1.gif"),new
String("RGB"),this);
texLod1 = new TextureLoader(new java.net.URL("file:sign1.gif"),new
String("RGB"),this);
}catch (java.net.MalformedURLException mfe){
System.err.println("wrong url, can't find file sign1.gif");
}
System.err.println("allright till here");
Texture tex0 = texLod0.getTexture(); System.err.println("tex0=
"+tex0);
Texture tex1 = texLod1.getTexture(); System.err.println("tex1=
"+tex1);
if (tex0!=null) app[0].setTexture(tex0);
if (tex1!=null) app[1].setTexture(tex1);
}
This is the error message:
Error: in loading image
Error: in loading image
allright till here
java.lang.NullPointerException
at com.sun.j3d.utils.image.TextureLoader.getTexture(TextureLoader.java:342)
at BoundingBox.createAppearances(BoundingBox.java:255)
at BoundingBox.createSceneGraph(BoundingBox.java:81)
at BoundingBox.init(BoundingBox.java:298)
at sun.applet.AppletPanel.run(AppletPanel.java:357)
at java.lang.Thread.run(Thread.java:479)
So I think it's the getTexture()- method that causes the problem. Do you have a
good example for me so I can compare the code?
Many thanks in advance,
Patrick
CAZOULAT Renaud CNET/DIH/REN wrote:
> Hi,
>
> a null pointer exception in texture loader often means it cannot find the
> texture.
> Try to use the constructor with an url like :
>
> TextureLoader texLod0 = new TextureLoader(new java.net.URL
> ("file:sign1.gif"),
> new String("RGB"),
> this);
>
> It may work better (it did work for me).
>
> for the text below, don't bother because it concerns only *3D* texturing
> (i.e. volumetric texturing) and I guess you want only to have a flat (2D)
> texture on your box ;-)
>
> > "Currently, Java 3D only takes advantage of 3D texture mapping on
> > Solaris systems. On win32, the OpenGL version of the Java 3D dll is
> > compiled with the Microsoft OpenGL header files, which do not define
> > the 3D texture mapping extension. "
> >
> > My question is, does it still only works on solaris or is
> > there allready
> > a way to get it worked on a Win NT machine with Open GL?
> >
>
> Renaud
>
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