В каких случаях может быть нужно вот такое вот смещение?

  void a(String paramString) { 
    try { 
      Class clazz = getClass(); 
      InputStream inputStream = clazz.getResourceAsStream(paramString); 
      int j = inputStream.read() + inputStream.read() * 256 + inputStream.read() * 256 * 256 + inputStream.read() * 256 * 256 * 256;// что это делает? 
      int k = inputStream.read() + inputStream.read() * 256 + inputStream.read() * 256 * 256 + inputStream.read() * 256 * 256 * 256;  

  
      int m = inputStream.read() + inputStream.read() * 256 + inputStream.read() * 256 * 256 + inputStream.read() * 256 * 256 * 256;  
      int n = inputStream.read() + inputStream.read() * 256 + inputStream.read() * 256 * 256 + inputStream.read() * 256 * 256 * 256;  
      int i1 = inputStream.read() + inputStream.read() * 256 + inputStream.read() * 256 * 256 + inputStream.read() * 256 * 256 * 256;  
      int i2 = inputStream.read() + inputStream.read() * 256;  
      inputStream.read();  
      inputStream.read();  
      short[] arrayOfShort = new short[3 * i2];  
      byte[] arrayOfByte2 = new byte[2 * i2];  
      byte[] arrayOfByte1 = new byte[3 * i2];  
      byte b;  
      for (b = 0; b < i2; b++) {  
  
 
 

        int i3 = inputStream.read() + inputStream.read() * 256 + inputStream.read() * 256 * 256 + inputStream.read() * 256 * 256 * 256;   
        int i4 = inputStream.read() + inputStream.read() * 256 + inputStream.read() * 256 * 256 + inputStream.read() * 256 * 256 * 256;   
        int i5 = inputStream.read() + inputStream.read() * 256 + inputStream.read() * 256 * 256 + inputStream.read() * 256 * 256 * 256;   
        arrayOfShort[3 * b + 0] = (short)(i3 >> 4);   
        arrayOfShort[3 * b + 1] = (short)(i4 >> 4);   
        arrayOfShort[3 * b + 2] = (short)(i5 >> 4);   
      }    
      for (b = 0; b < i2; b++) {   
        int i3 = inputStream.read() + inputStream.read() * 256;  

    
        int i4 = inputStream.read() + inputStream.read() * 256;    
        i3 >>= 3;     
        i4 >>= 3;     
        if (i3 > 127)     
          i3 = 127;      
        if (i4 > 127)     
          i4 = 127;      
        arrayOfByte2[2 * b + 0] = (byte)i3;     
        arrayOfByte2[2 * b + 1] = (byte)i4;     
      }  

       
      if (i1 != 0)      
        for (b = 0; b < i2; b++) {      
          int i3 = inputStream.read() + inputStream.read() * 256 + inputStream.read() * 256 * 256 + inputStream.read() * 256 * 256 * 256;      
          int i4 = inputStream.read() + inputStream.read() * 256 + inputStream.read() * 256 * 256 + inputStream.read() * 256 * 256 * 256;      
          int i5 = inputStream.read() + inputStream.read() * 256 + inputStream.read() * 256 * 256 + inputStream.read() * 256 * 256 * 256; 

        
          arrayOfByte1[3 * b + 0] = (byte)(i3 >> 7);       
          arrayOfByte1[3 * b + 1] = (byte)(i4 >> 7);       
          arrayOfByte1[3 * b + 2] = (byte)(i5 >> 7);       
        }         
      int i = inputStream.read() + inputStream.read() * 256 + inputStream.read() * 256 * 256 + inputStream.read() * 256 * 256 * 256;       
      int[] arrayOfInt1 = new int[i];       
      int[] arrayOfInt2 = new int[i / 3];       
      for (b = 0; b < i; b++)       
        arrayOfInt1[b] = inputStream.read() + inputStream.read() * 256;        
      for (b = 0; b < i / 3; b++)       
        arrayOfInt2[b] = 3;        
      this.b = new VertexBuffer();  

        
      this.c = new VertexArray(arrayOfShort.length / 3, 3, 2);        
      this.c.set(0, arrayOfShort.length / 3, arrayOfShort);        
      this.b.setPositions(this.c, 0.001F, null);        
      this.d = new VertexArray(arrayOfByte2.length / 2, 2, 1);        
      this.d.set(0, arrayOfByte2.length / 2, arrayOfByte2);        
      this.b.setTexCoords(0, this.d, 0.0078125F, null);        
      this.a = new TriangleStripArray(arrayOfInt1, arrayOfInt2); 

          
      this.e = new Appearance();         
      this.f = new CompositingMode();         
      this.f.setAlphaWriteEnable(false);         
      this.f.setBlending(68);         
      a(true);         
      this.e.setCompositingMode(this.f);         
      inputStream.close();         
    } catch (IOException iOException) {}         
  }         
           
  void a(Texture2D paramTexture2D) {         
    this.e.setTexture(0, paramTexture2D);         
  }         
           
  void a(boolean paramBoolean) {         
    this.f.setDepthTestEnable(paramBoolean);         
    this.f.setDepthWriteEnable(paramBoolean);         
  }         
           
  

  void a(Graphics3D paramGraphics3D, Transform paramTransform) {          
    paramGraphics3D.render(this.b, (IndexBuffer)this.a, this.e, paramTransform);          
  }          
}