This program implements the Midpoint Circle Drawing Algorithm using OpenGL. It draws a circle on a Cartesian plane, allowing the user to input the radius. The resulting circle is displayed along with a grid, and Cartesian coordinates.

• Midpoint Circle Drawing Algorithm: The algorithm is used to calculate the pixel coordinates of the circle in the first octant, and these points are then mirrored to complete the circle.

• OpenGL Visualization: The circle and other elements are visualized using OpenGL.

• User Interaction: Users can input the radius of the circle, and the program will display the circle accordingly.

• Grid and Cartesian Coordinates: The program also displays a grid and Cartesian coordinates to provide a reference.

• Square and Axes: A square and axes are included for additional illustration.

1. Compile the Code: Use a C++ compiler to compile the code. Ensure that you have the necessary OpenGL libraries installed.

g++ -o CircleDrawing circle_drawing.cpp -lGL -lGLU -lglut

2. Run the Executable:

./CircleDrawing

3. Enter Radius: The program will prompt you to enter the radius. Input a value from -10 to +10.

4. View the Result: The OpenGL window will display the circle, grid, Cartesian coordinates, square, and axes.

• The program uses the Midpoint Circle Drawing Algorithm to calculate the pixel coordinates of the circle.