func triangle(w http.ResponseWriter, r *http.Request) {
t := time.Now()
width, err := strconv.Atoi(r.FormValue("width"))
height, err := strconv.Atoi(r.FormValue("height"))
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
if width <= 0 || height <= 0 {
http.Error(w, "Size not valid", http.StatusBadRequest)
return
}
if width > 5120 || height > 2880 {
http.Error(w, "Maximum resolution via server is 5120x2880. Use the console client to generate larger images.", http.StatusBadRequest)
return
}
h := w.Header()
h.Set("Content-Type", "image/svg+xml")
h.Set("Vary", "Accept-Encoding")
h.Set("Cache-Control", "no-cache, no-store, must-revalidate")
h.Set("Pragma", "no-cache")
h.Set("Expires", "0")
tessellated.Triangle(w, float64(width), float64(height))
fmt.Printf("Triangle background of size %d, %d took %v\n", width, height, time.Since(t))
}
func main() {
flag.Parse()
if -1 == port {
var p Printer
tessellated.Triangle(p, Width, Height)
return
}
if 65535 < port || port < 0 {
fmt.Println("Invalid Port!")
return
}
http.HandleFunc("/", root)
http.HandleFunc("/triangle.svg", triangle)
err := http.ListenAndServe(fmt.Sprintf(":%d", port), nil)
fmt.Println(err)
}