// Arc draws an arc at (x,y) with dimensions (w,h).
// the arc starts at the angle sa, extended to aext
func Arc(x, y, w, h, sa, aext float64, style ...string) {
C.Arc(C.VGfloat(x), C.VGfloat(y), C.VGfloat(w), C.VGfloat(h), C.VGfloat(sa), C.VGfloat(aext))
}
// Arc draws an arc at (x,y) with dimensions (w,h).
// the arc starts at the angle sa, extended to aext
func Arc(x, y, w, h, sa, aext VGfloat) {
C.Arc(C.VGfloat(x), C.VGfloat(y), C.VGfloat(w), C.VGfloat(h), C.VGfloat(sa), C.VGfloat(aext))
}