// Polygon draws a polygon using coordinates in x,y
func Polygon(x, y []float64, style ...string) {
px, py, np := poly(x, y)
if np > 0 {
C.Polygon(px, py, np)
}
}
// Polygon draws a polygon with coordinate in x,y
func Polygon(x, y []VGfloat) {
px, py, np := poly(x, y)
if np > 0 {
C.Polygon(px, py, np)
}
}