A very simple plugin for bevy to rescale the graphics of cameras, freeing developers from concerning the real resolution of windows.
Normally, the view of a camera will be rendered to the whole window without scaling, so when the resolution changes, some unintended behavior will happen. For Camera3d, the scale will change, revealing or hiding some objects; for Camera2d, the resolution of the window directly determines the resolution of the camera, and changing it will mess up the display.
With this plugin, the display of cameras can be automatically rescaled and centered with the change of the window, while keeping a fixed aspect ratio, as the image above displays. Moreover, although bevy has OrthographicProjection to give Camera2d a fixed resolution, the plugin offers a function to easily create it, and make the camera remain a fixed aspect ratio rather than filling the entire window.
Therefore, the users no longer have to concern on the size of window, but can focus on the "logistic" graphic itself.
To auto-scale a camera, first, you need to add ScalePlugin to the App.
Then, you need to add AspectRatio component to the camera entity.
To fix the resolution of a Camera2d, you can put function fixed_size_2d in the camera buldle. It will return an OrthographicProjection component.