//¤@­Óring-wood½d¨Ò
//==========================================================
//      neutral base
                                                                         
surface  {                                                               
        texture  {                                                       
                turbulence  {                                            
                        scale  .1  3  1                                  
                        amp  .3                                          
                        terms  3                                         
                }                                                        
                pattern  spherical                                       
                scale  0 1 1                                             
                translate  0 0 5                                         
                blend  .5                                                
                radius  .15                                              
                radius  .06                                              
                                                                         
                surf {                                                   
                        texture {                                        
                                pattern noise                            
                                scale 3 .03 .03                          
                                terms 2                                  
                                surf { diff brown shine 100 white }      
                                surf { diff medium_tan shine 100 white } 
                        }                                                
                }                                                        
                surf {                                                   
                        texture {                                        
                                pattern noise                            
                                scale 3 .03 .03                          
                                terms 2                                  
                                surf { diff dim_brown shine 20 white }   
                                surf { diff dark_tan shine 20 white }    
                        }                                                
                }                                                        
        }                                                                
}                                                                        
                                                                         
                                                                         
ring   { center   0 0 0  normal   0 0 1  radius   10  }
//==========================================================