func (o *drawing) init() {
if o.canvas == nil {
o.canvas = canvas.NewCanvas(WIDTH, HEIGHT)
o.px = 0.0 + MARGIN
o.py = 100.0 - MARGIN
}
}
func main() {
flag.Parse()
// Special -l list command.
if *list {
for k, v := range superfractal.Builtin {
Printf("%s\t%s\n", k, v)
}
return
}
c := canvas.NewCanvas(*width, *height)
if *grid {
c.Grid(*width/10, canvas.RGB(100, 100, 100))
}
ifs := superfractal.ParseIfsParams(*params)
switch *style {
case 1: // Whole.
c.Fill(0, 0, *width, *height, canvas.Blue)
// c.WritePng(os.Stdout)
// return
c = ifs.WholeGame(c, *num)
case 0: // Chaos.
ifs.ChaosGame(c, *num, canvas.Green)
}
c.WritePng(os.Stdout)
}
func NewTriptych(numPanels, width, height int) *Triptych {
z := &Triptych{
Panels: make([]*canvas.Canvas, numPanels),
}
for i := 0; i < numPanels; i++ {
z.Panels[i] = canvas.NewCanvas(width, height)
}
return z
}
// WholeGame
func (o IFS) WholeGame(src *canvas.Canvas, n int) *canvas.Canvas {
t1 := src.Dup()
t2 := canvas.NewCanvas(src.Width, src.Height)
for i := 0; i < n; i++ {
canvas.Say("WholeStep", i)
o.WholeStep(t1, t2)
t1, t2 = t2, t1
t2.Fill(0, 0, t2.Width, t2.Height, canvas.Black)
}
return t1
}
func main() {
flag.Parse()
// Special -l list command, listing short names for builtin IFSs.
if *list {
for k, v := range superfractal.Builtin {
Printf("%s\t%s\n", k, v)
}
return
}
// Parse IFSs & construct initial Triptych.
ifss := superfractal.ParseListOfIfsParams(*params)
tree := &superfractal.CodeTree{
Depth: *depth,
IFSs: ifss,
}
tree.Init(*seed)
can := canvas.NewCanvas(*width, *height)
tmp1 := make([]byte, *depth)
tmp2 := make([]byte, *depth)
for i := 0; i < *num; i++ {
x, y := tree.RandomPoint(tmp1, tmp2)
if *fuzz > 1 {
xf := rand.Intn(*fuzz)
yf := rand.Intn(*fuzz)
can.FSet(x+float64(xf)/float64(*width), y+float64(yf)/float64(*height), canvas.White)
} else {
can.FSet(x, y, canvas.White)
}
/*
for xf := 0; xf < *fuzz; xf++ {
for yf := 0; yf < *fuzz; yf++ {
can.FSet(x + float64(xf)/float64(*width), y + float64(yf)/float64(*height), canvas.White)
}
}
*/
}
canvas.Say(*filename)
fd, err := os.Create(*filename)
if err != nil {
panic(err)
}
can.WritePng(fd)
fd.Close()
}
func (h H) ServeHTTP(w http.ResponseWriter, r *http.Request) {
// fmt.Fprintf(w, "Hello, %q", html.EscapeString(r.URL.Path))
strs := notnum.Split(r.URL.Path, -1)
var nums []float64
for _, s := range strs {
if s == "" {
continue
}
f, err := strconv.ParseFloat(s, 64)
if err != nil {
panic(err)
}
nums = append(nums, f)
}
can := canvas.NewCanvas(*WIDTH, *HEIGHT)
can.Grid(50, canvas.RGB(20, 20, 20))
for i := 0; i < len(nums)-8; i += 9 {
x1 := int(nums[i+0])
y1 := int(nums[i+1])
x2 := int(nums[i+2])
y2 := int(nums[i+3])
x3 := int(nums[i+4])
y3 := int(nums[i+5])
red := byte(nums[i+6])
green := byte(nums[i+7])
blue := byte(nums[i+8])
can.PaintTriangle(x1, y1, x2, y2, x3, y3, canvas.RGB(red, green, blue))
}
w.Header().Set("Content-Type", "image/png")
can.WritePng(w)
}