void ddazigzag( int x1, int y1, int x2, int y2, int iSize, LPPOINTFUNC lpPointFunction )
/************************************************************************/
{
int x11, y11, x12, y12;
int _cdecl rand(void);
x11 = rand() % max( iSize, (x2 - x1)/2 );
y11 = rand() % max( iSize, (y2 - y1)/2 );
ddaline( x1, y1, x11, y11, lpPointFunction );
x12 = rand() % max( iSize, (x2 - x11)/2 );
y12 = rand() % max( iSize, (y2 - y11)/2 );
ddaline( x11, y11, x12, y12, lpPointFunction );
ddaline( x12, y12, x2, y2, lpPointFunction );
}
void main()
{
int x1,x2,y1,y2,gd,gm,opt;
detectgraph(&gd,&gm);
initgraph(&gd,&gm,"c:\\tcc\\bgi");
cout<<"Enter the Co-ordinate of 1st End Point ";
cin>>x1>>y1;
cout<<"\n Enter the Co-ordinate of 2nd End Point ";
cin>>x2>>y2;
cout<<"Enter No to draw line by prefered algorithm "<<endl;
cout<<"Your options are 1. DDA "<<endl<<"2. Bresenhams "<<endl<<"Your options are 1 or 2 ";
cin>>opt;
if (opt==1)
{
cleardevice();
cout<<"DDA Line Aloforiyhm "<<endl;
ddaline(x1,y1,x2,y2);
}
else
{
cleardevice();
cout<<"Bresenhams Line Drawing Algorithm "<<endl;
bresline(x1,y1,x2,y2);
}
getch();
closegraph();
}
void main()
{
float xa,xb,ya,yb;
int gd=DETECT,gm,chmnu,modch;
initgraph(&gd,&gm,"c:\\tc\\bgi");
do
{
clrscr();
cleardevice();
cout<<"\n\n\t\t****************M E N U****************\n\n";
cout<<"--------------------------------------------------";
cout<<"\n\tD D A\t\tA L G O R I T H M\n\n";
cout<<"1.THICK LINE\t2.DOTTED LINE\t3.NORMAL LINE";
cout<<"\n\n--------------------------------------------------";
cout<<"\n\n\tB R E S E N H A M' s\t\tA L G O R I T H M\n\n";
cout<<"4.THICK LINE\t5.DOTTED LINE\t6.NORMAL LINE\n\n";
cout<<"--------------------------------------------------\n7.EXIT";
cout<<"\n\nENTER CHOICE:-\t";
cin>>chmnu;
if(chmnu==7)
break;
if(chmnu>=1 && chmnu<=3)
modch=1;
else
modch=2;
cout<<"\n\nENTER THE END POINTS OF THE LINE (xa,ya)&(xb,yb) :-\t";
cin>>xa>>ya>>xb>>yb;
switch(modch)
{
case 1: clrscr();
cleardevice();
ddaline(xa,ya,xb,yb,chmnu);
break;
case 2: clrscr();
cleardevice();
breshline((int)(ceil(xa)),(int)(ceil(ya)),(int)(ceil(xb)),(int)(ceil(yb)),chmnu );
break;
default: cout<<"ENTER PROPER VALUES";
}
getch();
}while(1);
closegraph();
}
static BOOL NEAR PathIsClear (int x1,int y1,int x2,int y2)
{
BOOL bClear = TRUE;
int i;
LPFRAME lpFrame = ImgGetBaseEditFrame (lpImage);
nNumLinePoints = 0;
ddaline (x1,y1,x2,y2, (LPPOINTFUNC)MazeLineProc);
for (i = 0; i < nNumLinePoints; i++)
{
RGBS Pixel;
LPTR lpLine = FramePointer (lpFrame,
MazeLinePoints[i].x,MazeLinePoints[i].y,FALSE);
FrameGetRGB (lpFrame,lpLine,&Pixel,1);
if (!Pixel.red && !Pixel.green && !Pixel.blue)
{
bClear = FALSE;
break;
}
}
return bClear;
}
