diff options
Diffstat (limited to 'main.go')
| -rw-r--r-- | main.go | 6 |
1 files changed, 5 insertions, 1 deletions
@@ -13,6 +13,8 @@ import ( var palette = []color.Color{ color.Black, color.RGBA{0x00, 0xff, 0x00, 0xff}, + color.RGBA{0xff, 0x00, 0x00, 0xff}, + color.RGBA{0x00, 0x00, 0xff, 0xff}, } const ( @@ -52,10 +54,12 @@ func newImage(size, cycles int, phase, res, freq float64) *image.Paletted { rect := image.Rect(0, 0, 2*size+1, 2*size+1) img := image.NewPaletted(rect, palette) + randIndex := 1 + uint8(rand.IntN(len(palette)-1)) + for t := 0.0; t < float64(cycles)*2*math.Pi; t += res { x := math.Sin(t) y := math.Sin(t*freq + phase) - img.SetColorIndex(size+int(x*float64(size)+0.5), size+int(y*float64(size)+0.5), foregroundIndex) + img.SetColorIndex(size+int(x*float64(size)+0.5), size+int(y*float64(size)+0.5), randIndex) } return img |