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annotate tests/test_noise.nim @ 370:fad6490fb728

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add: missing material module, some functions for noise
author Sam <sam@basx.dev>
date Wed, 22 Nov 2023 23:24:07 +0700
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children 71315636ba82
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370
fad6490fb728 add: missing material module, some functions for noise
Sam <sam@basx.dev>
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1 import semicongine
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2
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3 const w = 500
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4 const h = 500
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5
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6 var o = "P2\n" & $ w & " " & $ h & "\n255\n"
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7
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8 for y in 0 ..< h:
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9 for x in 0 ..< w:
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10 let v = (
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11 perlin(newVec2f(float(x) * 0.01, float(y) * 0.01)) * 0.7 +
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12 perlin(newVec2f(float(x) * 0.05, float(y) * 0.05)) * 0.25 +
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13 perlin(newVec2f(float(x) * 0.2, float(y) * 0.2)) * 0.05
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14 )
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15 o = o & $(int((v * 0.5 + 0.5) * 255)) & " "
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16 o = o & "\n"
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17 echo o