tv_CircleFill x y radius [cx cy] [button]
Draws a filled circle in the current image in the current layer. The position of the center of the circle is defined by the x and y arguments, and its radius is defined by the radius argument. If the color range or opacity mapping is active, the cx and cy arguments indicate the position of the ends of the range direction vector that starts at the center of the circle, these arguments are just for compatibility, don't use cx cy with TVPaint. The button argument indicates if the circle is to be drawn as if you pressed the mouse left button (value 0) or right button (value 1).