BBresenham

BBresenham

x1= input('Enter the initial X-coordinate'); %initial X-coordinate

y1= input('Enter the initial Y-coordinate'); %initial Y-coordinate

x2= input('Enter the final X-coordinate'); %Final X-coordinate

y2= input('Enter the final Y-coordinate'); %Final Y-coordinate

dx=abs(x2-x1); %difference in x coordinate

dy=abs(y2-y1); %difference in y coordinate

m=dy/dx;

i=1;

if m<1

p=(2*dy)-dx;

twody=2*dy;

twodydx=2*(dy-dx);

if x1>x2

x=x2;

y=y2;

xEnd=x1;

else

x=x1;

y=y1;

xEnd=x2;

end

A(1,1)=x;

A(1,2)=y;

A(1,3)=p;

while (x<xEnd)

i=i+1;

x=x+1;

if p<0

p=p+twody;

else

y=y+1;

p=p+twodydx;

end

A(i,1)=x;

A(i,2)=y;

A(i,3)=p;

end

else

p=(2*dy)-dx;

twody=2*dy;

twodydx=2*(dy-dx);

if y1>y2

x=x2;

y=y2;

yEnd=y1;

else

x=x1;

y=y1;

yEnd=y2;

end

A(1,1)=x;

A(1,2)=y;

A(1,3)=p;

while (y<yEnd)

i=i+1;

y=y+1;

if p<0

p=p+twodx;

else

x=x+1;

p=p+twodydx;

end

A(1,1)=x;

A(1,2)=y;

A(1,3)=p;

end

end

plot(A(:,1),A(:,2))

title('Bresenhams Line Drawing Algorithm')

legend('Bresenham Line')

xlabel('X-Axis')

ylabel('Y-Axis')