So, I have just tried to use an OpenGLContext to define some vertices in a class but somehow it won’t work is it because I need to use the Projucer somehow. I hope there is a way to do this I would not want to put everything in a renderer class.
It’s hard to say, but it sounds like you haven’t setup your juce project.
If that’s the case, I’d suggest going through some of the tutorials on here.
The projucer is a way of generating xcode and visual studio projects from a juce project. It’s very handy if you don’t want to get into cmake and all of that (though cmake is useful to learn in the long run) and is essentially the only way to build a juce project.