Is there a free / open-source program that would allow me to drag and drop points of a cubic curve and displays the equation?
There are a number of equations that I could use in my game project and it would be a huge time saver if there is a tool that allows me to drag & drop and fine-tune curves to meet the desired effect.
In all circumstances I need to compute the value of
x. This probably is not important, but both axis always range between -1 and 1.