How to modify the text in java3d??

Question

I want to modify the text in java3d.What should I do ??
first , I add the text to the java3d;
then , I pick it by using behaior;
third, I setString("My dog") to change text!!
but there have some capability error!
how can I do that??
thanks in advance!!

Answer 1

Hi,
I've a similar problem - I'm using Text2D to create labels for a node-link graph. I've set all the capabilities, etc., and am finally able to change the labels using setString in Text2D. With one slight problem - now I'm getting an error:
java.lang.IllegalArgumentException: Texture:illegal image size
        at javax.media.j3d.TextureRetained.checkImageSize(TextureRetained.java:389)
        at javax.media.j3d.TextureRetained.setImage(TextureRetained.java:423)
        at javax.media.j3d.Texture.setImage(Texture.java:869)
        at com.sun.j3d.utils.geometry.Text2D.setString(Text2D.java:118)
        at Label3D.setLabelText(Label3D.java:59)The only time I don't get the error is when I change the label from component ID to (which is a string containing an integer, e.g., 1234) to start/stop stage (which is another string containing an integer, e.g., 04, 11). If I attempt to change from component name (a string containing a string, e.g., "mesoderm"), say, to component ID, I get the error. So it's not about the length of the string, since component name is invariably longer than the ID, and the ID could be longer than the start/stop stage.
oh, this is the code I have for the capabilities bit - no more complaints there
private void setCapabilities()
  text.setCapability(text.ALLOW_APPEARANCE_READ);          
  text.setCapability(text.ALLOW_APPEARANCE_WRITE);
  Appearance appearance = text.getAppearance();
  appearance.setCapability(appearance.ALLOW_TEXTURE_READ);
  appearance.setCapability(appearance.ALLOW_TEXTURE_WRITE);
  Texture texture = appearance.getTexture();
  texture.setCapability(texture.ALLOW_IMAGE_READ);
  texture.setCapability(texture.ALLOW_IMAGE_WRITE);
}Any ideas, anyone?
aba.