Make pretty red pictures
Will Brown
9 years ago
| 0 | package main | |
| 1 | ||
| 2 | import ( | |
| 3 | "flag" | |
| 4 | "fmt" | |
| 5 | "image" | |
| 6 | "image/color" | |
| 7 | "image/png" | |
| 8 | "os" | |
| 9 | ) | |
| 10 | ||
| 11 | var Width = flag.Int("width", 300, "width of output image") | |
| 12 | var Height = flag.Int("height", 300, "height of output image") | |
| 13 | var Output = flag.String("output", "output.png", "output PNG file") | |
| 14 | ||
| 15 | func NewColor(r, g, b, a uint8) color.Color { | |
| 16 | return color.NRGBA{R: r, G: g, B: b, A: a} | |
| 17 | } | |
| 18 | ||
| 19 | func main() { | |
| 20 | flag.Parse() | |
| 21 | ||
| 22 | println("Monte is go.") | |
| 23 | img := image.NewNRGBA(image.Rect(0, 0, *Width, *Height)) | |
| 24 | for i := 0; i < *Width; i++ { | |
| 25 | for j := 0; j < *Height; j++ { | |
| 26 | img.Set(i, j, NewColor(255, 0, 0, 255)) | |
| 27 | } | |
| 28 | } | |
| 29 | ||
| 30 | w, err := os.Create(*Output) | |
| 31 | if err != nil { | |
| 32 | fmt.Printf("Could not open output file: %v\n", err) | |
| 33 | return | |
| 34 | } | |
| 35 | png.Encode(w, img) | |
| 36 | w.Close() | |
| 37 | } |