This is a simple application that uses Qt and C++ to draw some mathematical shapes. We are using parametric equations to compute the points on the shapes.
Do you wish to see how this was built? Head over to Udemy and have a look at the course below.
Robust Qt5 & C++ Gui Programming: 2D Graphics Tutorial
https://www.udemy.com/qt5-gui-cpp-programming-tutorial-2d-graphics/?couponCode=BITBUCKET
(I've included a special promotional code just in case you want to buy the course)