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view tests/test_noise.nim @ 1008:443e8090614c

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fix: some mesh attributes will be handled automatically, ignore them when doing mesh-material-shader compatability-check
author sam <sam@basx.dev>
date Tue, 16 Apr 2024 00:36:39 +0700
parents fad6490fb728
children 71315636ba82
line wrap: on
line source

import semicongine

const w = 500
const h = 500

var o = "P2\n" & $ w & " " & $ h & "\n255\n"

for y in 0 ..< h:
  for x in 0 ..< w:
    let v = (
      perlin(newVec2f(float(x) * 0.01, float(y) * 0.01)) * 0.7 +
      perlin(newVec2f(float(x) * 0.05, float(y) * 0.05)) * 0.25 +
      perlin(newVec2f(float(x) * 0.2, float(y) * 0.2)) * 0.05
    )
    o = o & $(int((v * 0.5 + 0.5) * 255)) & " "
  o = o & "\n"
echo o