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Cull map: cells per ray on a logarithmic viridis scale

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Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
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Meta Vens 2026-10-03 22:21:50 +02:00
commit 4ae986a52a
1 changed files with 5 additions and 5 deletions
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10
packages/cultmath/tests/CultMath.Tests/NoiseBoundTests.cs
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@ -862,8 +862,8 @@ public sealed class NoiseBoundTests
/// the pixel's centre) is marched densely for its transmittance and over each tile mask and the oracle
/// mask (the cells some ray of the tile samples nonzero), with the early-out at 0.02. The PNG is
/// 1920 x 1080 in four panels: top left the cells per ray the interval march integrates, top right the
/// affine march's, bottom left the oracle march's (all three on one viridis scale, 0 to the largest
/// count), bottom right the transmittance (black opaque, white clear). It is written only when
/// affine march's, bottom left the oracle march's (all three on one viridis scale, logarithmic,
/// log(1 + n) / log(1 + the largest count)), bottom right the transmittance (black opaque, white clear). It is written only when
/// CULTMATH_WRITE_CULLMAP names a directory; the mean cells per ray are printed either way.
/// </summary>
[Fact(Explicit = true)]
@ -940,9 +940,9 @@ public sealed class NoiseBoundTests
for (var x = 0; x < width; x++)
{
var p = y * width + x;
Put(x, y, Colour(cellsInterval[p] / (double)most));
Put(width + x, y, Colour(cellsAffine[p] / (double)most));
Put(x, height + y, Colour(cellsOracle[p] / (double)most));
Put(x, y, Colour(Math.Log(1.0 + cellsInterval[p]) / Math.Log(1.0 + most)));
Put(width + x, y, Colour(Math.Log(1.0 + cellsAffine[p]) / Math.Log(1.0 + most)));
Put(x, height + y, Colour(Math.Log(1.0 + cellsOracle[p]) / Math.Log(1.0 + most)));
var grey = (byte)Math.Round(255.0 * transmittance[p]);
Put(width + x, height + y, (grey, grey, grey));
}