_BTDRAWcircle8

Draw a circle into a 8-bits bitmap.

Prototype :

fun [ObjBitmap8 F F F I] ObjBitmap8

ObjBitmap8 : a bitmap object
F : x coordonate
F : y coordonate
F : radius
I : thickness

Return : ObjBitmap8 the same object or nil if error.

See also :

Example :