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Move color step and xpos, ypos to variables scoped in main

This commit is contained in:
Steven Polley 2018-07-30 22:41:39 -06:00
parent 9dd2005632
commit a9b8108924
1 changed files with 36 additions and 15 deletions
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51
main.go
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@ -16,16 +16,14 @@ import (
var (
colorPalette string
colorStep float64
xpos, ypos float64
)
var waitGroup sync.WaitGroup
func init() {
flag.Float64Var(&colorStep, "step", 12000, "Color smooth step. Value should be greater than iteration count, otherwise the value will be adjusted to the iteration count.")
flag.Float64Var(&xpos, "xpos", -0.00275, "Point position on the real axis (defined on `x` axis)")
flag.Float64Var(&ypos, "ypos", 0.78912, "Point position on the imaginary axis (defined on `y` axis)")
//flag.Float64Var(&xpos, "xpos", -0.00275, "Point position on the real axis (defined on `x` axis)")
//flag.Float64Var(&ypos, "ypos", 0.78912, "Point position on the imaginary axis (defined on `y` axis)")
flag.StringVar(&colorPalette, "palette", "Plan9", "Hippi | Plan9 | AfternoonBlue | SummerBeach | Biochimist | Fiesta")
flag.Parse()
}
@ -33,11 +31,17 @@ func init() {
func main() {
//var escapeRadius float64 = 0.125689
var escapeRadius float64 = -0.01
maxIteration := 800
//var escapeRadius float64 = 0
var escapeRadius float64 = 4
var colorStep float64 = 12000
//var xpos float64 = -0.01925
//var ypos float64 = 0.796272
var xpos float64 = -1.0
var ypos float64 = -1.0
maxIteration := 2000
imageSmoothness := 1
width := 1920
height := 1080
width := 640
height := 480
if colorStep < float64(maxIteration) {
colorStep = float64(maxIteration)
@ -47,10 +51,27 @@ func main() {
if len(colors) > 0 {
fmt.Println("Rendering images...")
for i := 1; i <= 15000; i++ {
render(maxIteration, colors, escapeRadius, imageSmoothness, width, height, fmt.Sprintf("images/%08d.png", i))
escapeRadius += 0.001
maxIteration += 1
for i := 1; i <= 2000; i++ {
render(maxIteration, colors, escapeRadius, xpos, ypos, imageSmoothness, width, height, fmt.Sprintf("images/%08d.png", i))
//ypos += 0.00020
//xpos -= 0.00010
// if i%3 == 0 {
maxIteration++
// }
if i > 100 {
escapeRadius *= 0.995
}
if xpos > -1.4 {
if i > 100 {
// xpos *= 1.005
}
}
fmt.Println(xpos)
}
}
@ -117,8 +138,8 @@ func interpolateColors(paletteCode *string, numberOfColors float64) []color.RGBA
return interpolatedColors
}
func render(maxIteration int, colors []color.RGBA, escapeRadius float64, imageSmoothness, width, height int, outputFile string) {
fmt.Printf("rendering image %s\n", outputFile)
func render(maxIteration int, colors []color.RGBA, escapeRadius, xpos, ypos float64, imageSmoothness, width, height int, outputFile string) {
fmt.Printf("Mandelbrot set escapeRadius=%f image=%s\n", escapeRadius, outputFile)
width = width * imageSmoothness
height = height * imageSmoothness