// this file contain the structure for the file reading of 3dm files.
//  class image, class points, class planes;
typedef struct{
               float x,y,z;
               }coordinate;   
class points {
               public :
                       int no_points;
                       coordinate * co_ord;
                       points(int n)
                       {
                          no_points=n;
                          co_ord = (coordinate *)new coordinate[n];
                        }
		       ~points(){ if (co_ord) delete co_ord;}	
		      void set_co_ordinate(int index,float x,float y,float z)
			{  (co_ord+index)->x=x;
			   (co_ord+index)->y=y;
			   (co_ord+index)->z=z;	
			 }
                       coordinate *get_co_ordinate(int ind){return co_ord+ind;} 		
              };
class plan_points{
                public: 
         		int count_points,*index_points,count;
                        plan_points(){}
                        void init_plane(int n)
			{ count_points=count=n;
                          index_points=new int[count_points];
                        }
			set_points(int n)
			{
			  if(count>0){
			    *(index_points+(count_points - count))=n-1;
			    count--;}
			}
                                  
             }; 
class objects{
                public :
                        int no_planes,no_points;
                        points *set;
			plan_points *start;
			ifstream infile;
                        objects(char *fname)
			{  
                           infile.open(fname);
			   if(!infile){cout<<"Error!!"<<fname<<endl;exit(0);}
			   set=NULL;start=NULL;
			}		  
			float readfile()
			{ char c;char str[80];float f;
			  int totpoints,totplanes;infile>>c;
			  while(c!='*')infile>>c;
			  infile.getline(str,80);
			  infile>>totpoints>>totplanes;
			  no_planes=totplanes;no_points=totpoints;
			  set= new points(totpoints);  
			  for(int i=0;i<totpoints;i++)
			  { float x,y,z;
			    infile>>x>>y>>z;
			    if(fabs(x)>f) f=fabs(x);
			    if(fabs(y)>f) f=fabs(y);
			    if(fabs(z)>f) f=fabs(z);
			    set->set_co_ordinate(i,x,y,z);
			  }
			  start=new plan_points[totplanes];
			  for(int i=0;i<totplanes;i++)
			  { int no;
			    infile>>no;(start+i)->init_plane(no);
			    for(int j=0;j<no;j++)
			    { int temp;
			      infile>>temp;
			      (start+i)->set_points(temp);
			    }
			  }
			  infile.close();
			  cout<<"--  file read!!!"<<f<<endl; 
			
                          return f;
              }         
              void draw_object(GLenum *m)
	      {  float r,b,g,dr,db,dg;
     		 r=0.5;b=0.5;g=0.5;dr=0.1;db=0.1;dg=0.1;   	
                cout<<"Drawing the object!!!"<<endl;
                   cout<<*m<<endl;
		for(int i=0;i<no_planes;i++)
		{ 
		  glBegin(*m);
                   glColor3f(r,b,g);
 		  for(int j=0;j<(start+i)->count_points;j++)
		  {
		 float x,y,z;
		    x=((set->co_ord)+(*(((start+i)->index_points)+j)))->x;	
		    y=((set->co_ord)+(*(((start+i)->index_points)+j)))->y;	
		    z=((set->co_ord)+(*(((start+i)->index_points)+j)))->z;
//		   cout<<x<<"<=>"<<y<<"<=>"<<z<<endl;	
		    glVertex3f(x,y,z);
		  }
		  glEnd();
		  glFlush();
                  r=r+dr;b+=db;g+=dg;
                 if(r>=0.80) r=r-0.59;
                  if(g>=0.80) g=g-0.59;
                  if(b>=0.80) b=b-0.59;
		}
  		glTranslatef(0.0,0.0,0.0);
	      }
};