package liceum28; 
public class pkt3d 
{ 
  public double x,y,z; 
  public pkt3d(double wx,double wy,double wz) 
  { 
    this.x=wx;this.y=wy;this.z=wz; 
  } 
  //----------------------------------------------
  public void war(double nx,double ny, double nz) 
  { 
    x=nx; y=ny; z=nz; 
  } 
  //----------------------------------------------
  public double dl() 
  { 
    return(Math.sqrt(x*x+y*y+z*z)); 
  } 
  //----------------------------------------------
  public void ob_x( int kat ) 
  {double fi=(double)kat*Math.PI/180; 
    double yo=y; 
    y = -z * Math.sin(fi) + yo * Math.cos(fi); 
    z = z * Math.cos(fi) + yo * Math.sin(fi); 
  } 
  //----------------------------------------------
  public void ob_y( int kat ) 
  { double fi=(double)kat*Math.PI/180; 
    double xo = x; 
    x = xo * Math.cos(fi) + z * Math.sin(fi); 
    z = -xo * Math.sin(fi) + z * Math.cos(fi); 
  } 
  //----------------------------------------------
  public void ob_z( int kat ) 
  { double fi=(double)kat*Math.PI/180; 
    double xo = x; 
    x = xo * Math.cos(fi)-y * Math.sin(fi); 
    y = y * Math.cos(fi)+xo * Math.sin(fi); 
  } 
}