get_points
  
  Description:
  public void get_points (
out Point3D a, 
out Point3D b, 
out Point3D c)
  
 
  
    Retrieves the three vertices of the given Triangle and returns their 
      coordinates as Point3D.
    Parameters:
    
      
        | this | 
        
           a Triangle 
         | 
      
      
        | a | 
        
           return location for the coordinates  of the first vertex 
         | 
      
      
        | b | 
        
           return location for the coordinates  of the second vertex 
         | 
      
      
        | c | 
        
           return location for the coordinates  of the third vertex 
         |