52 lines
890 B
Go
52 lines
890 B
Go
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package main
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import (
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"math"
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"math/rand"
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"github.com/fogleman/gg"
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)
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type Point struct {
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X, Y float64
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}
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func Polygon(n int) []Point {
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result := make([]Point, n)
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for i := 0; i < n; i++ {
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a := float64(i)*2*math.Pi/float64(n) - math.Pi/2
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result[i] = Point{math.Cos(a), math.Sin(a)}
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}
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return result
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}
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func main() {
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const W = 1200
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const H = 120
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const S = 100
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dc := gg.NewContext(W, H)
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dc.SetHexColor("#FFFFFF")
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dc.Clear()
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n := 5
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points := Polygon(n)
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for x := S / 2; x < W; x += S {
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dc.Push()
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s := rand.Float64()*S/4 + S/4
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dc.Translate(float64(x), H/2)
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dc.Rotate(rand.Float64() * 2 * math.Pi)
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dc.Scale(s, s)
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for i := 0; i < n+1; i++ {
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index := (i * 2) % n
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p := points[index]
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dc.LineTo(p.X, p.Y)
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}
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dc.SetLineWidth(10)
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dc.SetHexColor("#FFCC00")
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dc.StrokePreserve()
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dc.SetHexColor("#FFE43A")
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dc.Fill()
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dc.Pop()
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}
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dc.SavePNG("out.png")
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}
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