How to update Shape3D contents?

Question

My question is: After loading a object from a .obj file, if I didn't change the length (size) of the interesting vertexes, but I will change the vertexes' coordinates (say, float[] coords) with the corresponding textures (float[] cotexts ) over these coordinates, how can I do it directly from the following obtained " Shape3D object3d " ?
     TransformGroup createSceneTransformGroup( ) {
          TransformGroup m_BGFace = new BranchGroup();                             // create a BranchGroup
          m_BGFace.setCapability(BranchGroup.ALLOW_DETACH);
          m_BGFace = myScene.getSceneGroup();                                          // myScene is actually a Scene object loaded from a single ObjectFile
          Shape3D object3d = (Shape3D) m_BGFace.getChild(0);                      // obviously, object3D is the single child in current BranchGroup
          GeometryArray head = (GeometryArray)object3d.getGeometry();          // geometric data of the head
             GeometryInfo gi = new GeometryInfo( head );                                     // GeometryInfo Actually, what I've got is a TriangleStripArray
          Point3f[] coords = gi.getCoordinates();                                               // Get the coordinates, triangle by triangle.
?????????????float[] coords +  float[] cotexts??????????????
????????????? What to do??????????????????????????????
          m_TGFace.addChild(m_BGFace);                                                 //  Add BranchGroup to TransformGroup
          return m_TGFace;                                                                            // return TransformGroup
     }Edited by: jiapei100 on Oct 4, 2008 1:37 PM
Edited by: jiapei100 on Oct 4, 2008 1:49 PM

Answer 1

what i want to do is, i read a file line by line and put it to the textPane, so when a user types a new line in the text pane i want to save the new line to the file
please help
regards