Computer Graphics Lab Project 2: Drawing the Circle

Computer Graphics (ITEC-613) Lab Project 2: Drawing the Circle 

By: Dr. Zeeshan Bhatti 

Task 1: Draw the Circle using the simple Polynomial Method using CPP or JAVA

Basic Algorithm
For x= -R to R
      y = sqrt(R² - x²)
       PlotPixel(x, round(y) );
       PlotPixel(x, - round(y) );
end;

Solution in Matlab: 

x = 0;
R = 10;
R1 = -R;

x = R1 : 1 : R ;
y= sqrt(R.^2 - x.^2);

plot (x, y, '.' ,  x, -y , 'x' ), xlabel('x-axis'), ylabel('y-axis'), title('Draw Line Graph '), 
        grid off , axis([-10 10 -10 10]);


Task 2: Write the code for creating a Circle using Bresenhams Algorithm for all 8 octants.

NOTE: 

This is a Lab project, to be done and submitted by each individual student during the Lab, every week. Each student has to do the tasks given, print the Source Code, and get it signed by the lecturer during each lab. Each Lab project has Marks which will be given during the final exam, and the final Viva Vice will also be conducted from these lab projects. Therefore, Each student MUST complete these tasks individually and get it signed during the lab session and finally Must bring all the Lab Project files during the final Viva Vice for input of Marks.