This is only used if you are using the percentage display system.
The "aspect ratio" is the ratio of the width to the height. Very loosely, "4:3" means that for every 4 pixels of width there are 3 pixels of height.
A width of 1024 and a height of 768 is a 4:3 ratio. If you divided the width by 4 and then multiplied that by three, you get the height.
But in the percentage system you are not working with actual pixels, but with the percentage in the x and y direction that a point is at. And you only use values between 0 and 100 for indicating sizes and positions.
In the percentage system, SetSpritePosition(spr,50.0,50.0) would position the sprite in the middle of the display.
So, if you want to use the percentage system, you will want to use SetDisplayAspect to fit what your target size ratio is.
If you want to use exact pixel locations, then you use the virtual resolution system and don't use SetDisplayAspect at all.
Cheers,
Ancient Lady
AGK Community Tester and AppGameKit Master
