Project 3

Due on Gradescope by Friday, February 21st. For this project you will design, implement, test, and use C++ class inheritance with components.

Requirements

• You may work individually or with a partner of your choosing.

  • You may reuse code from previous project(s), if appropriate.

• All of your programming files should be in a private GitHub repository in your section’s organization.

  • The repository must be named with your initials + dash + Project3 (e.g. LD-JH-Project3).
  • The repository should have a .gitignore file and a README file.

• You will need to have at least four classes, each of which satisfy exactly one of these requirements:

  • A parent class that may or may not be abstract;
  • A child class that inherits from the parent class;
  • An unrelated class (that does not inherit from the parent or child classes); and
  • A component class, an object of which can be included as a field in any of the other three classes.

• Think about what each of the classes will represent:

Lens will be a parent class of Rectilinear_Lens

Camera will have a Lens

Photograph (unrelated class) will have a Camera (component class)

• What added or modified methods will the child class have?

Rectilinear_Lens will have a method to calculate horizontal field of view. Normal Lenses calculate field of view in a predictable way, but wide-angle lenses calculate field of view in an unpredictable way. Therefore it is necessary to have different methods for calculating field of view.

• What added fields will the child class have?

No added fields are necessary. The only difference between child classes of Lens is the way they calculate field of view.

• Where does the component belong?

Camera has a Rectilinear_Lens, and Photograph has a Camera. Both are components.

• How will the unrelated class interact with the others?

Photograph is the unrelated class. It has a camera component, which will have a lens component. Photograph provides information very similar to the information you see when inspecting information properties of files generated by a digital camera.

• Your classes should be declared in header file(s) (with comments) and defined in corresponding .cpp file(s).

• To make sure your classes are working the way you designed, include a testing.cpp file that has a main function and tests all of your non-trivial methods thoroughly.

  • Put an add_executable line in CMakeLists.txt to create an executable for your testing program.

• Use your classes to have a fully-functioning program in main.cpp. The program should be interactive. The more effort you put in, the more you will impress the graders and get a good grade.

  • Put an add_executable line in CMakeLists.txt to create an executable for your main program.

• Write about your program in your README file. Justify the choices you made in creating the project (which should include answers to the questions above).

• All of the above must be committed and pushed to your GitHub repository.

• On Gradescope, submit the URL of the last commit in a submission.txt file.