possibly a bug in the texture loader? i am using:
TextureLoader(java.lang.String fname, java.awt.Component observer)
- and -
TextureLoader(java.lang.String fname, java.lang.String format,
java.awt.Component observer)
and have no problems loading my local textures...
maybe you could try using these instead TextureLoader(java.net.URL....
maybe.. possibly.. give it a try.
-----Ursprüngliche Nachricht-----
Von: ing. P.W.L. JANSSEN <[EMAIL PROTECTED]>
An: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
Datum: Mittwoch, 22. September 1999 10:36
Betreff: Re: [JAVA3D] texture mapping question
>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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