package main import ( "math" "github.com/fogleman/gg" ) func main() { const W = 1200 const H = 60 dc := gg.NewContext(W, H) // dc.SetHexColor("#FFFFFF") // dc.Clear() dc.ScaleAbout(0.95, 0.75, W/2, H/2) for i := 0; i < W; i++ { a := float64(i) * 2 * math.Pi / W * 8 x := float64(i) y := (math.Sin(a) + 1) / 2 * H dc.LineTo(x, y) } dc.ClosePath() dc.SetHexColor("#3E606F") dc.FillPreserve() dc.SetHexColor("#19344180") dc.SetLineWidth(8) dc.Stroke() dc.SavePNG("out.png") }