CircleAA
Draws a circle using antialiasing algorithm
void CircleAA( const int x, // X coordinate const int y, // Y coordinate const double r, // radius const uint clr // color );
Parameters
x
[in] X coordinate of the center of the circle.
y
[in] Y coordinate of the center of the circle.
r
[in] Circle radius.
clr
[in] Color in ARGB format.