Description
Page URL
https://docs.flutter.dev/resources/architectural-overview#layout-and-rendering
Page source
https://github.com/flutter/website/tree/main/src/resources/architectural-overview.md
Describe the problem
The demo linked to with the text "this example of a polar coordinate system" has degraded and no longer works on current bits.
@jogboms has kindly updated it, but we also need to incorporate any changes made to the original source on which this demo was based, which is here: https://github.com/flutter/flutter/blob/master/examples/layers/rendering/src/sector_layout.dart
Expected fix
Ideally the DartPad example would import the code from the original source and provide a thin veneer over it (MaterialApp that hosts it), so the two didn't diverge. I don't have time to fix this right now, so I'm filing it so that we track it.
Additional context
No response