A cross is a plus-shaped form made by two arms meeting at the center. It works as a simple geometric mark, such as an add icon or a medical and map symbol.
`radius` is the half-length from the center to each arm's end, from 0 to 1. `thickness` is the half-width of an arm, from 0.01 to 0.5, and `rounding` softens its arm ends and inner corners from 0 to 0.2. Rotate it by 45 degrees to turn the plus into an X.
`thickness` is the half-width of each arm, so increasing it makes the intersection look thick quickly. Pair it with `Line` for guides or layer it over `RoundedRect` for an add mark inside a button.
When to use
Use it for add, intersection, medical, or simple map marks. It can also decorate intersections in a repeating grid. Avoid it when you need asymmetric arms or arms of different lengths.