func main() {
const maxX = 1024
const maxY = 800
const centerRe, centerIm float64 = -0.7435669, 0.1314023
const hd float64 = 0.0022878
const hv float64 = float64(maxY) / float64(maxX) * hd
const hdStepX = hd / maxX
const hdStepY = hv / maxY
const upperLeftRe = centerRe - (float64(maxX/2) * hdStepX)
const upperLeftIm = centerIm - (float64(maxY/2) * hdStepY)
f, err := os.Create("mandel.png")
if err != nil {
panic(err)
}
m := image.NewRGBA(image.Rect(0, 0, maxX, maxY))
b := m.Bounds()
for y := b.Min.Y; y < b.Max.Y; y++ {
for x := b.Min.X; x < b.Max.X; x++ {
dx := float64(x) * hdStepX
dy := float64(y) * hdStepY
iter := mandel.Iterate(upperLeftRe+dx, upperLeftIm+dy, 1024)
c := getColor(iter)
m.Set(x, maxY-y, c)
}
}
if err = png.Encode(f, m); err != nil {
panic(err)
}
}
func main() {
const maxIter = 10 * 360
const maxX = 600
const maxY = 480
var iteration [maxX][maxY]int
const centerRe, centerIm float64 = -0.7435669, 0.1314023
const hd float64 = 0.0022878
const hv float64 = float64(maxY) / float64(maxX) * hd
const hdStepX = hd / maxX
const hdStepY = hv / maxY
const upperLeftRe = centerRe - (float64(maxX/2) * hdStepX)
const upperLeftIm = centerIm - (float64(maxY/2) * hdStepY)
fmt.Println("Iterate")
for y := 0; y < maxY; y++ {
for x := 0; x < maxX; x++ {
dx := float64(x) * hdStepX
dy := float64(y) * hdStepY
iteration[x][y] = mandel.Iterate(upperLeftRe+dx, upperLeftIm+dy, maxIter)
}
}
m := image.NewRGBA(image.Rect(0, 0, maxX, maxY))
b := m.Bounds()
for colorShift := 0; colorShift < 36; colorShift++ {
for y := b.Min.Y; y < b.Max.Y; y++ {
for x := b.Min.X; x < b.Max.X; x++ {
iter := iteration[x][y]
c := hue.Color(float64((iter+colorShift*10)%360) / 360.0)
m.Set(x, maxY-y, c)
}
}
n := fmt.Sprintf("mandel-hue-colorshift-%02d.png", colorShift)
fmt.Println("write file", n)
f, err := os.Create(n)
if err != nil {
panic(err)
}
if err = png.Encode(f, m); err != nil {
panic(err)
}
}
}
func main() {
var maxIter = 10 * 360
var d = mandel.NewData(640, 400, -0.7435669, 0.1314023, 0.0022878)
for colScale := 30; colScale < 120; colScale += 30 {
n := fmt.Sprintf("mandel-hue-%04d.png", colScale)
fmt.Println("Render:", n)
pi := pngimage.NewPngimage(d.MaxX, d.MaxY, n)
it := task.IterateTasks(d, pi)
for t := range it {
iter := mandel.Iterate(t.CRe, t.CIm, maxIter)
pi.Img.Set(t.X, d.MaxY-t.Y, getColor(iter, colScale))
}
pi.Save()
}
}
func main() {
const maxX = 640
const maxY = 400
const centerRe, centerIm float64 = -0.7435669, 0.1314023
const hd float64 = 0.0022878
const hv float64 = float64(maxY) / float64(maxX) * hd
const hdStepX = hd / maxX
const hdStepY = hv / maxY
const upperLeftRe = centerRe - (float64(maxX/2) * hdStepX)
const upperLeftIm = centerIm - (float64(maxY/2) * hdStepY)
for colScale := 30; colScale < 360*2; colScale += 30 {
n := fmt.Sprintf("mandel-hue-%04d.png", colScale)
fmt.Println("Render n:", n)
f, err := os.Create(n)
if err != nil {
panic(err)
}
m := image.NewRGBA(image.Rect(0, 0, maxX, maxY))
b := m.Bounds()
for y := b.Min.Y; y < b.Max.Y; y++ {
for x := b.Min.X; x < b.Max.X; x++ {
dx := float64(x) * hdStepX
dy := float64(y) * hdStepY
iter := mandel.Iterate(upperLeftRe+dx, upperLeftIm+dy, maxIter)
c := float64(iter) / float64(colScale)
c = c - math.Floor(c)
m.Set(x, maxY-y, hue.Color(c))
}
}
if err = png.Encode(f, m); err != nil {
panic(err)
}
}
}
func main() {
const maxIter = 1024
const maxX = 320
const maxY = 200
const centerRe, centerIm float64 = -0.7435669, 0.1314023
const hd float64 = 0.0022878
const hv float64 = float64(maxY) / float64(maxX) * hd
const hdStepX = hd / maxX
const hdStepY = hv / maxY
const upperLeftRe = centerRe - (float64(maxX/2) * hdStepX)
const upperLeftIm = centerIm - (float64(maxY/2) * hdStepY)
m := make(map[int]int)
var maxV = 0
for y := 0; y < maxY; y++ {
for x := 0; x < maxX; x++ {
dx := float64(x) * hdStepX
dy := float64(y) * hdStepY
iter := mandel.Iterate(upperLeftRe+dx, upperLeftIm+dy, maxIter)
m[iter] = m[iter] + 1
if m[iter] > maxV {
maxV = m[iter]
}
fmt.Println(x, maxY-y, iter)
}
}
for x := 1; x <= maxV; x++ {
for k, v := range m {
if x == v {
fmt.Println("iter", k, " -> count", v)
}
}
}
}