Maybe make the default arcball camera more exposed?

[werner291]

Hello!

The Window class has a default arcball camera that is very useful, but sometimes starts out in a position that's a bit too close to the geometry.

Right now, it's a private member of the Window class, and not to my knowledge accessible from outside. Would it be possible to allow outside code to access it and move it around?

[alvinhochun]

There was a PR that asked for this (#209), and my reply to it was:

I believe the canonical way to do it is to construct your own camera or use one of kiss3d::camera::* and pass it to Window::render_with_camera instead of calling Window::render. Alternatively, you can create a type and have it implement kiss3d::window::State which allows you to return your own camera in State::cameras_and_effect_and_renderer, then use Window::render_loop to start the rendering.

This is still my viewpoint today as it not only does the same thing, but also easier to handle than borrowing from the Window.