flutter_fortune_wheel VS flutter_architecture_samples

We want to position the child widget on the line, which cuts a given slice in half. To achieve that, we start of with a vector that points to the center of the top edge of our bounding box starting from its top left. This ensures that the vector's length is half the circle's radius. To actually point to the center of our slice, we need to rotate this vector by half the slice's angle, which gives us the blue vector in above illustration.. If you are interested in how the rotateVector works, you can find its implementation in this package's Github repository. With the slice's center at hand, the child's offset can be retrieved by adjusting the center to the child's size. If you believe there is a simpler way to achieve the same result, I encourage you to send me a message or comment with your ideas about this problem; I am always glad to learn of new features and tricks.

Great! We are now able to draw a circle composed of any number of individually customizable slices. In my next article we will implement a MultiChildLayoutDelegate to correctly position child widgets within the slices. In the meantime, if you don't want to wait for the next article, you can find the package's code on Github.

Maybe is this what you are looking for? https://github.com/brianegan/flutter_architecture_samples

Agree. This is a great value course that got me up and running quickly. Otherwise, looking at code samples helps. When you’re ready to build an app, this is a good architecture sample repo: https://github.com/brianegan/flutter_architecture_samples