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islaApocalypse-v2/Tools/Scripts
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beezm bddd3636dd chat2/09: coastal fragmentation — a perimeter-wide, band-limited noise, amplitude laddered at a fixed stretch 
A dedicated term, not the edge noise scaled: pass 1's edge noise is positive-only, squircle-
modulated, 2.5x the base frequency - the coastline's jitter; scaling it would roughen the whole
rim and bias the coast inward. CoastalFragment adds, to the PRE-power falloff, amp * window(f) *
noise(x + off, y + off) with its own deterministic field (seed offset 9109, coordinate offset
0.37 map widths - D-059), zero-mean, at 12 periods per map width (the lobe/neck scale, chosen by
probe against 20 and 32: 20 climbs into smalls, 32 is fuzz), weighted by a smooth window on the
falloff value itself, centred 0.66 (the coast's falloff for a median base noise, from the 08
diagnosis), half-width 0.18, EXACTLY ZERO beyond - so the interior, the massif and the deep sea
are bit-identical by construction. Thin necks of barely-land flip first; nothing is detected,
nothing is stamped. FragmentBitesOnly is exposed (probed: it erodes the coast inward - mainland
-3/-8/-14 % at 0.06/0.15/0.30 - rather than detaching pieces; off by default).

Batch: BatchRoot(9, "coastal_fragment") - 4 amplitudes (0.06, 0.15, 0.30, 0.50) x task 08's two
seeds at 4096, stretch fixed at 2 (08's stretch_3 rung, whose dump is the bit-identical baseline,
a8), sinker untouched, speck revert at < 4 cells, offshore/shelf off; lean render (regions overlay
+ relief + .f32), the hemisphere-split count/size table with largest-three and histograms.

Oracle, all passing: a1 (the curve untouched), a8 x2 (frag OFF at stretch 2 == the 08 field,
16.8 M cells each), interior locked (r: every cell clear of the window bit-identical, 8/8),
high-ground report (s, informational), centre is land, tag/coastline, classify == raw, ids and
heights deterministic.

The read: both hemispheres fragment; the north more readily (N 10 -> 28, 13 -> 40 islands across
the ladder; S 4 -> 31, 14 -> 28) and the south's big stretch pieces are the zero-mean noise's
other edge: on 999999937 the 83k-cell southern fragment is BRIDGED back onto the mainland at amp
0.50 (mainland +183k). The working range is amp 0.15-0.30; 0.50 is the bookend. Graduation held.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013EY3ZTF6NwzF8ukBHQXSK7
2026-08-22 07:09:27 -04:00
..
CoastalFragment.cs chat2/09: coastal fragmentation — a perimeter-wide, band-limited noise, amplitude laddered at a fixed stretch 2026-08-22 07:09:27 -04:00
CoastalFragment.cs.uid chat2/09: coastal fragmentation — a perimeter-wide, band-limited noise, amplitude laddered at a fixed stretch 2026-08-22 07:09:27 -04:00
CoastalFragmentTool.cs chat2/09: coastal fragmentation — a perimeter-wide, band-limited noise, amplitude laddered at a fixed stretch 2026-08-22 07:09:27 -04:00
CoastalFragmentTool.cs.uid chat2/09: coastal fragmentation — a perimeter-wide, band-limited noise, amplitude laddered at a fixed stretch 2026-08-22 07:09:27 -04:00
CurveBaselineTool.cs Phase 2a: continuous grade — smooth the upper staircase, preserve the lowlands 2026-08-20 03:41:27 -04:00
CurveBaselineTool.cs.uid Phase 2a: the faithful redistribution curve, re-measured against v2's own output 2026-08-20 01:38:10 -04:00
CurveContinuousTool.cs Phase 2a: continuous grade — smooth the upper staircase, preserve the lowlands 2026-08-20 03:41:27 -04:00
CurveContinuousTool.cs.uid Phase 2a: continuous grade — smooth the upper staircase, preserve the lowlands 2026-08-20 03:41:27 -04:00
GrayscaleRenderer.cs Phase 1 review: raw grayscale, the wide gradient as hero, fixed batch naming 2026-08-19 22:55:53 -04:00
GrayscaleRenderer.cs.uid Phase 1 review: raw grayscale, the wide gradient as hero, fixed batch naming 2026-08-19 22:55:53 -04:00
HeightField.cs Phase 1: shaded relief and the Hispaniola palette — the grin gate 2026-08-19 21:58:44 -04:00
HeightField.cs.uid Phase 1: shaded relief and the Hispaniola palette — the grin gate 2026-08-19 21:58:44 -04:00
Hillshade.cs Phase 1: shaded relief and the Hispaniola palette — the grin gate 2026-08-19 21:58:44 -04:00
Hillshade.cs.uid Phase 1: shaded relief and the Hispaniola palette — the grin gate 2026-08-19 21:58:44 -04:00
HistogramRenderer.cs Phase 2a: the faithful redistribution curve, re-measured against v2's own output 2026-08-20 01:38:10 -04:00
HistogramRenderer.cs.uid Phase 2a: the faithful redistribution curve, re-measured against v2's own output 2026-08-20 01:38:10 -04:00
IslandFalloff.cs chat2/06: offshore islands — revert the forced floor, tune the organic layer for coverage 2026-08-21 06:22:54 -04:00
IslandFalloff.cs.uid Phase 1: port the crown-jewel noise and pass-1, and render the island 2026-08-19 21:27:20 -04:00
LandHistogram.cs Phase 2a: restore the mountain — calibrate the climb to the staircase, not to a guess 2026-08-20 04:14:47 -04:00
LandHistogram.cs.uid Phase 2a: the faithful redistribution curve, re-measured against v2's own output 2026-08-20 01:38:10 -04:00
LegendRenderer.cs Phase 1 review: raw grayscale, the wide gradient as hero, fixed batch naming 2026-08-19 22:55:53 -04:00
LegendRenderer.cs.uid Phase 1 review: raw grayscale, the wide gradient as hero, fixed batch naming 2026-08-19 22:55:53 -04:00
LookConfig.cs Phase 1 review: raw grayscale, the wide gradient as hero, fixed batch naming 2026-08-19 22:55:53 -04:00
LookConfig.cs.uid Phase 1: shaded relief and the Hispaniola palette — the grin gate 2026-08-19 21:58:44 -04:00
MountainRestoreTool.cs Phase 2a: restore the mountain — calibrate the climb to the staircase, not to a guess 2026-08-20 04:14:47 -04:00
MountainRestoreTool.cs.uid Phase 2a: restore the mountain — calibrate the climb to the staircase, not to a guess 2026-08-20 04:14:47 -04:00
NoiseDefaultsProbe.cs Phase 1: port the crown-jewel noise and pass-1, and render the island 2026-08-19 21:27:20 -04:00
NoiseDefaultsProbe.cs.uid Phase 1: port the crown-jewel noise and pass-1, and render the island 2026-08-19 21:27:20 -04:00
OffshoreAnalysis.cs chat2/07: the region-labeling layer — label all land, tag by construction, tunable speck revert 2026-08-22 03:50:33 -04:00
OffshoreAnalysis.cs.uid chat2/05: offshore islands — rejoin the stub faithfully, then reshape to a guaranteed hybrid 2026-08-21 05:14:53 -04:00
OffshoreDiagnosis.cs chat2/06: offshore islands — revert the forced floor, tune the organic layer for coverage 2026-08-21 06:22:54 -04:00
OffshoreDiagnosis.cs.uid chat2/06: offshore islands — revert the forced floor, tune the organic layer for coverage 2026-08-21 06:22:54 -04:00
OffshoreIslandsTool.cs chat2/07: the region-labeling layer — label all land, tag by construction, tunable speck revert 2026-08-22 03:50:33 -04:00
OffshoreIslandsTool.cs.uid chat2/05: offshore islands — rejoin the stub faithfully, then reshape to a guaranteed hybrid 2026-08-21 05:14:53 -04:00
OffshorePass.cs chat2/06: offshore islands — revert the forced floor, tune the organic layer for coverage 2026-08-21 06:22:54 -04:00
OffshorePass.cs.uid chat2/05: offshore islands — rejoin the stub faithfully, then reshape to a guaranteed hybrid 2026-08-21 05:14:53 -04:00
OffshoreSettings.cs chat2/06: offshore islands — revert the forced floor, tune the organic layer for coverage 2026-08-21 06:22:54 -04:00
OffshoreSettings.cs.uid chat2/05: offshore islands — rejoin the stub faithfully, then reshape to a guaranteed hybrid 2026-08-21 05:14:53 -04:00
Pass1Result.cs chat2/07: the region-labeling layer — label all land, tag by construction, tunable speck revert 2026-08-22 03:50:33 -04:00
Pass1Result.cs.uid Phase 1: port the crown-jewel noise and pass-1, and render the island 2026-08-19 21:27:20 -04:00
Pass2Result.cs chat2/07: the region-labeling layer — label all land, tag by construction, tunable speck revert 2026-08-22 03:50:33 -04:00
Pass2Result.cs.uid Phase 2a: the faithful redistribution curve, re-measured against v2's own output 2026-08-20 01:38:10 -04:00
RegionLabelingTool.cs chat2/07: the region-labeling layer — label all land, tag by construction, tunable speck revert 2026-08-22 03:50:33 -04:00
RegionLabelingTool.cs.uid chat2/07: the region-labeling layer — label all land, tag by construction, tunable speck revert 2026-08-22 03:50:33 -04:00
RegionOverlayRenderer.cs chat2/07: the region-labeling layer — label all land, tag by construction, tunable speck revert 2026-08-22 03:50:33 -04:00
RegionOverlayRenderer.cs.uid chat2/07: the region-labeling layer — label all land, tag by construction, tunable speck revert 2026-08-22 03:50:33 -04:00
RegionPass.cs chat2/07: the region-labeling layer — label all land, tag by construction, tunable speck revert 2026-08-22 03:50:33 -04:00
RegionPass.cs.uid chat2/07: the region-labeling layer — label all land, tag by construction, tunable speck revert 2026-08-22 03:50:33 -04:00
ReliefPalette.cs Phase 2a: continuous grade — smooth the upper staircase, preserve the lowlands 2026-08-20 03:41:27 -04:00
ReliefPalette.cs.uid Phase 1: shaded relief and the Hispaniola palette — the grin gate 2026-08-19 21:58:44 -04:00
ReliefRenderer.cs Phase 1 review: raw grayscale, the wide gradient as hero, fixed batch naming 2026-08-19 22:55:53 -04:00
ReliefRenderer.cs.uid Phase 1: shaded relief and the Hispaniola palette — the grin gate 2026-08-19 21:58:44 -04:00
ReliefRenderTool.cs Fix the ISLA_SOURCE default the batch rename broke 2026-08-19 23:38:10 -04:00
ReliefRenderTool.cs.uid Phase 1: shaded relief and the Hispaniola palette — the grin gate 2026-08-19 21:58:44 -04:00
ReviewBatchTool.cs Fix the ISLA_SOURCE default the batch rename broke 2026-08-19 23:38:10 -04:00
ReviewBatchTool.cs.uid Phase 1 review: raw grayscale, the wide gradient as hero, fixed batch naming 2026-08-19 22:55:53 -04:00
SeedGalleryTool.cs chat2/04: the seed gallery — render-only, plus the terrain-curve-v1 checkpoint 2026-08-21 00:20:42 -04:00
SeedGalleryTool.cs.uid chat2/04: the seed gallery — render-only, plus the terrain-curve-v1 checkpoint 2026-08-21 00:20:42 -04:00
Shaping.cs chat2/07: the region-labeling layer — label all land, tag by construction, tunable speck revert 2026-08-22 03:50:33 -04:00
Shaping.cs.uid Phase 2a: the faithful redistribution curve, re-measured against v2's own output 2026-08-20 01:38:10 -04:00
ShapingOracle.cs chat2/09: coastal fragmentation — a perimeter-wide, band-limited noise, amplitude laddered at a fixed stretch 2026-08-22 07:09:27 -04:00
ShapingOracle.cs.uid Phase 2a: the faithful redistribution curve, re-measured against v2's own output 2026-08-20 01:38:10 -04:00
SouthernStretch.cs chat2/08: southern stretch, EXPLORATION — the fragmentation knob space, diagnosed then laddered 2026-08-22 05:54:12 -04:00
SouthernStretch.cs.uid chat2/08: southern stretch, EXPLORATION — the fragmentation knob space, diagnosed then laddered 2026-08-22 05:54:12 -04:00
SouthernStretchTool.cs chat2/08: southern stretch, EXPLORATION — the fragmentation knob space, diagnosed then laddered 2026-08-22 05:54:12 -04:00
SouthernStretchTool.cs.uid chat2/08: southern stretch, EXPLORATION — the fragmentation knob space, diagnosed then laddered 2026-08-22 05:54:12 -04:00
TagOverlayRenderer.cs chat2/06: offshore islands — revert the forced floor, tune the organic layer for coverage 2026-08-21 06:22:54 -04:00
TagOverlayRenderer.cs.uid chat2/05: offshore islands — rejoin the stub faithfully, then reshape to a guaranteed hybrid 2026-08-21 05:14:53 -04:00
TerrainGenConfig.cs chat2/09: coastal fragmentation — a perimeter-wide, band-limited noise, amplitude laddered at a fixed stretch 2026-08-22 07:09:27 -04:00
TerrainGenConfig.cs.uid Phase 1: port the crown-jewel noise and pass-1, and render the island 2026-08-19 21:27:20 -04:00
TerrainGenTool.cs Phase 1 review: raw grayscale, the wide gradient as hero, fixed batch naming 2026-08-19 22:55:53 -04:00
TerrainGenTool.cs.uid Phase 1: port the crown-jewel noise and pass-1, and render the island 2026-08-19 21:27:20 -04:00
TerrainNoise.cs Phase 2a: the faithful redistribution curve, re-measured against v2's own output 2026-08-20 01:38:10 -04:00
TerrainNoise.cs.uid Phase 1: port the crown-jewel noise and pass-1, and render the island 2026-08-19 21:27:20 -04:00
TinyFont.cs Phase 1 review: raw grayscale, the wide gradient as hero, fixed batch naming 2026-08-19 22:55:53 -04:00
TinyFont.cs.uid Phase 1 review: raw grayscale, the wide gradient as hero, fixed batch naming 2026-08-19 22:55:53 -04:00
Topography.cs chat2/09: coastal fragmentation — a perimeter-wide, band-limited noise, amplitude laddered at a fixed stretch 2026-08-22 07:09:27 -04:00
Topography.cs.uid Phase 1: port the crown-jewel noise and pass-1, and render the island 2026-08-19 21:27:20 -04:00
UserDirProbe.cs Phase 0: clean project skeleton for the v2 rewrite 2026-08-19 20:21:12 -04:00
UserDirProbe.cs.uid Phase 0: clean project skeleton for the v2 rewrite 2026-08-19 20:21:12 -04:00