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47 lines
1.1 KiB
47 lines
1.1 KiB
package main
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import (
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"git.aiterp.net/lucifer3/server/internal/color"
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"image"
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color2 "image/color"
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"image/png"
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"math"
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"os"
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)
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func main() {
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img := image.NewRGBA(image.Rect(0, 0, 1000, 1000))
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for y := 0; y < 1000; y += 1 {
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for x := 0; x < 1000; x += 1 {
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vecX := float64(x-500) / 500.0
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vecY := float64(y-500) / 500.0
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dist := math.Sqrt(vecX*vecX + vecY*vecY)
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angle := math.Mod((math.Atan2(vecY/dist, vecX/dist)*(180/math.Pi))+360+90, 360)
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if dist >= 0.9 && dist < 1 && angle > 2.5 && angle < 357.5 {
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k := 1000 + int(11000*((angle-2.5)/355))
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c := color.Color{K: &k}
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rgb, _ := c.ToRGB()
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img.Set(x, y, color2.RGBA{
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R: uint8(rgb.RGB.Red * 255.0),
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G: uint8(rgb.RGB.Green * 255.0),
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B: uint8(rgb.RGB.Blue * 255.0),
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A: 255,
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})
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} else if dist < 0.85 {
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rgb := (color.HueSat{Hue: math.Mod(angle+180, 360), Sat: dist / 0.85}).ToRGB()
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img.Set(x, y, color2.RGBA{
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R: uint8(rgb.Red * 255.0),
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G: uint8(rgb.Green * 255.0),
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B: uint8(rgb.Blue * 255.0),
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A: 255,
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})
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} else {
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img.Set(x, y, color2.RGBA{R: 0, G: 0, B: 0, A: 0})
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}
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}
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}
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_ = png.Encode(os.Stdout, img)
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}
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