func (o IFS) WholeStep(src *canvas.Canvas, dest *canvas.Canvas) {
wait := make(chan int)
for k := 0; k < len(o.Choices); k++ {
canvas.Say(" go Map", k)
go o.Choices[k].MapImageTo(src, dest, k, wait)
}
for k := 0; k < len(o.Choices); k++ {
w := <-wait
canvas.Say(" Waited", w)
}
}
// 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)
src := superfractal.NewTriptych(*numPanels, *width, *height)
if *startTriang {
// Special hack for demoing sier's traingles
for i := 0; i < *numPanels; i++ {
src.Panels[i].PaintTriangle(0, 0, 0, *height, *width, 0, canvas.White)
}
} else {
// Fill initial Triptych with different colors.
r, g, b := byte(255), byte(0), byte(0)
for i := 0; i < *numPanels; i++ {
if *mustWhite {
r, g, b = byte(255), byte(255), byte(255)
}
src.Panels[i].Fill(0, 0, *width, *height, canvas.RGB(r, g, b))
// Rotate & dim the colors a bit, on each iteration.
// TODO: something better than this.
r, g, b = byte(0.96*float64(b)), byte(0.96*float64(r)), byte(0.96*float64(g))
}
}
// Loop for *num steps, creating successive superfractal approximations.
for i := 0; i < *num; i++ {
targ := superfractal.NewTriptych(*numPanels, *width, *height)
targ.SuperStep(src, ifss)
for j := 0; j < *numPanels; j++ {
filename := Sprintf("%s.%03d.%03d.png", *base, i, j)
canvas.Say(filename)
f, err := os.Create(filename)
if err != nil {
panic(err)
}
targ.Panels[j].WritePng(f)
f.Close()
}
src = targ
}
}
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()
}
// Execute one step building a superfractal, reading images from src,
// and writing on the receiver, which should be a new blank Triptych.
func (o *Triptych) SuperStep(src *Triptych, ifss []*IFS) {
wait := make(chan int)
for i := 0; i < len(o.Panels); i++ {
dest := o.Panels[i]
// Pick an IFS at random.
ifs := ifss[rand.Intn(len(ifss))]
// For each map in the ifs,
for j := 0; j < len(ifs.Choices); j++ {
affine := ifs.Choices[j]
// pick a source, and map it onto the dest.
src := src.Panels[rand.Intn(len(src.Panels))]
go affine.MapImageTo(src, dest, i*1000+j, wait)
}
for j := 0; j < len(ifs.Choices); j++ {
k := <-wait
canvas.Say("Done", k)
}
}
}