# Original galaxy-map appearance evidence

All code evidence below belongs to the pinned `6891f70a021fa9f3a0e00458c284f48d1226e68ae7fc02ad48081aed47857e93` image at `artifacts/ship-model-reference/client-copy/EliteDangerous64.exe`. The installed Steam image changed on 2026-10-23; this document does not claim compatibility with that new image. All work was offline and read-only.

## Original resource floats

`research/Extract-OriginalGalaxyAppearance.py` extracts the appearance configuration from original resource `86ec03fba621526059fc6812faca6f10adcb63cb`, SHA256 `29a90189d0bb238c88d09dcc0f15ff751ea29aa208b1a90894ef3b47f8942e5f`. Its inflated frozen stream has SHA256 `5135b3d55e5239b3d11f79a76adeda954eb78be5101b6a516fd25df257affa77`.

The resolved original configuration is frozen pool 286, offset 6144, file offset 10612424. Multiple independent constructor/reference paths identify it: allegiance constructor `3AC56A0` reads `+98`, trade constructor `3AD86E0` reads `+B8`, exploration constructor `3AC4CF0` reads `+A8`, and security constructor `3AD0BF0` reads `+D8`. The Federation row at pool 411:6168 belongs to the allegiance table starting at 411:6144, referenced at configuration `+98`.

`artifacts/galaxy-query-research/palette-resources/original-appearance.json` contains the complete extracted floats, original string keys, pool positions and resource hashes:

| Offset | Meaning | Original layout |
| --- | --- | --- |
| +28/+30 | Common palette | RGB float triples, 18 entries |
| +70/+74 | Population size endpoints | .3, 2.0 |
| +7C/+88 | Population RGB endpoints | (.07,.17,.26), (.53,.93,.26) |
| +98 | Allegiance | 5 named RGB entries, stride 24 |
| +A8 | Exploration data | 2 named RGB entries |
| +B8 | Trade data | 3 named RGB entries |
| +C8 | State | 27 named RGB entries |
| +D8 | Security | 4 named RGB entries |
| +E8 | Visited | 2 named RGB entries |
| +14C..184 | Colonisation | 5 inline RGB triples |
| +1E0 | Commodity direction | 5 entries, stride 32; name, ID, RGBA, integer |
| +1F0 | Civilisation | 4 named RGB entries |

Default map size is `+1C=.7`. Original HDR floats are preserved, including state stronghold R=100 and frontline G=2; SDR byte colours necessarily clamp them. There is no evidence supporting replacement by a cycling eight-colour palette.

Ordinary named entries are copied to map entry `+20..2C`; `3B134E0` and the government colour getter `3B26180` return these floats directly. Government constructor `3ACBCA0` increments palette offset by 12 and ID by one for IDs 0..17. Exact native names come from the static enumeration at `5E9E320`. ID 18 Megaconstruction is outside that constructor's loop; wrapping it to palette zero is unsupported. Economy constructor `3AC41D0` copies RGB from actual definition rows `+10..18`; that separate source is now closed below.

## Authored economy definition colours

`Trace-OriginalGalaxyEconomyColours.py --verify` verifies the original RootGalaxyMap type and all11 authored economy rows. Native1F47A0 supplies the `RootGalaxyMap` name at4DE07A0, its1C0-byte allocator and1AEA10 name registration. That helper installs factory vtable4DE0CA0; its+8 is1F1430, which uses the same allocator and invokes3AD0370. The lowercase type hash6E6841CD matches FRES recordD4648 `[6E6841CD,10,647,590,3168]`. Root647's component vector has309 entries; entry94 points to exactly that configuration.

Activation3B379A0 is the actual component+8 vtable552A410 slot60. Its configuration pointer is this+48 (=base50), and vector20/count28 holds11 named RGB rows of24 bytes. It converts the source name through3C42860, then copies RGB into the base198 runtime hash map. Economy interface552A5D0+20 returns that same table through978AF0; keyed getter3B136A0 reads row10/14/18. Finally3AC41D0 copies those values into the filter colour and explicitly writes alpha1. The source is not the common18-colour palette, and extra enum values do not wrap around it.

| Source name | Native ID | Raw RGB |
|---|---:|---|
|None|1|(.4,.4,.4)|
|Extraction|2|(1,0,0)|
|Refinery|7|(1,.5,0)|
|Industrial|4|(1,1,0)|
|Agri|3|(.5,1,0)|
|Terraforming|12|(0,.6,0)|
|HighTech|6|(0,1,1)|
|Colony|22|(.2,.5,1)|
|Service|5|(0,.27,1)|
|Tourism|20|(.4,0,.9)|
|Military|8|(.9,0,.9)|

The extractor preserves exact float32 values/bytes and the original native IDs in `palette-resources/original-economy-colours.json`. The generator supplies these11 raw colours to both labels and the floating-point stellar path; the existing Agri→agriculture alias is explicit. Two tests exercise selected primary/secondary economy, source alpha and absent Repair/Rescue/Carrier/other rows. Missing authored rows remain unavailable. This recovers pinned configuration defaults, not a current live override snapshot.

## Dual colour representation

`3AC40B0` stores two RGB triples. With mode 1, the input is stored in the second triple (+0C), and `6CC950` transforms it into the first. Mode 0 performs the reverse using `6CCBE0`. Constants returned by `6CC880` and `6CC890` are gamma=2.4 and offset=.055. This is a continuous sRGB-like transfer, with threshold `a/(gamma-1)` and the corresponding continuous linear slope, rather than an arbitrary RGB reorder. Power and colonisation use this representation. The final colonisation getter `3B26BD0` explicitly selects the second triple (+0C), i.e. the original resource RGB. Do not assume that every first triple or every output branch uses identical representation.

## Exact star type colours and groups

`research/galaxy_palette_code_tables.py` reads the original static RGBA bytes at `5539360` and the 48 native type names at `5E9DBC0`, selected by original name accessor `3C59A20`. The output is `palette-resources/code-tables.json`.

Important native IDs are 9=TTS, 10=AeBe, 11=Y, 43=X, 44=Nebula, 45=RemnantNebula, 46=BigText, 47=NoSystem. A guess that places Y at 9 or supergiants at 43/44 disagrees with the original table.

The independent luminosity-name accessor `3C59990` selects table `5E9DAE0` by input index; complete entries are exported in `code-tables.json.enumerations.luminosity`. The original compact mask/shift is `classification & 0x7C00`, shifted right by 10. Native values are 0=O, 1=I, 2=Ia0, 3=Ia, 4=Ib, 5=Iab, 6=II, 7=IIa, 8=IIab, 9=IIb, 10=III, 11=IIIa, 12=IIIab, 13=IIIb, 14=IV, 15=IVa, 16=IVab, 17=IVb, 18=V, 19=Va, 20=Vab, 21=Vb, 22=Vz, 23=VI, 24=VII, 25=NoSystem, 26=ERROR. Thus I-family supergiants, II/III-family giants and IV-family subgiants can be distinguished from the independent spectral type; IDs 43/44 must not be repurposed for this.

Original star-class constructor `3AD2C70` builds these groups. Helper `3AE1220` chooses the group's actual RGBA from the native type palette, without assigning a new generated colour:

- IDs 0..8 individually; Y=11 individually.
- TTS/AeBe 9/10: palette type 9.
- Carbon family 17..24: palette type 18.
- Wolf-Rayet 12..16: palette type 12.
- White dwarfs 25..39: palette type 25.
- Non-sequence 40..43: palette type 40.

## Realistic colour: read-only port

Physical vtable `552E718`, slot +50, points to `3B26700`. It obtains a live blend from its renderer handle and calls `3C415F0(compact,outRGBA,blend)`, then returns each packed byte multiplied by 1/255. `3C415F0` mixes the type palette with the original luminosity/subclass colour, quantising by truncation after the original float arithmetic.

`3C3F5A0` reads compact classification ushort +40: type bits 0..5, subclass bits 6..9 (clamped to 9), luminosity bits 10..14. Prototype types TTS/AeBe use compact raw field +30 with two original temperature-bucket tables. `3C3F440` selects one of eight initialized global colour trees.

The original tree operator `3C284E0` inserts a zero-valued node on a miss. Calling it is therefore unsuitable for a read-only copy. `Navigation.GalaxyAppearance.cs` ports only the bounded exact-key traversal: root at tree+10, count+8, node type+1C, subclass byte+20, RGBA+2C, lower branch+8 and upper branch+0. Missing or malformed records yield nullable realistic colour and never insert a node.

Renderer type component ID is held at `5FA0A10`. Constructor `3A06740` installs base vtable `551F2D8`, base+8 `551F308`, main interface base+58 `551F408`, and type interface base+60 `551F548`. Registered component lookup returns the type interface. Main vtable +D8 is pure float getter `3A55CF0`, which reads main+99C. Its default value is .11, but the adapter copies the current original value instead of assuming it is permanently static.

## Realistic size

Physical vtable +48 points to `3B28090`. It reads the original neutral raw uint field compact+34, multiplies it by 1/32768 and by configuration +38=1 for types below 40 and type 42, or +3C=1.4e-6 for type 40. Other types use epsilon 2^-23. It applies scalar natural logarithm `48B5BC0`, clamps to configuration interval [-3,8], then normalises within that interval.

`3B3E640` chooses output range [.3,1.2] or [.05,1.5]. It reads settings component `5F05DD4`, vtable +158. Exact original implementation `552A9E8` uses getter `33D8280`, `movzx eax,byte[rcx+624];ret`. Alternate vtable `552AE90` uses constant-true `201130`. Both cases are supported without invoking them; an unknown implementation remains nullable.

## Colonisation final colour

The category returned by `3B1A200` is not a palette index. Final `3B26BD0` selects:

- Group 0: source slot 0, grey.
- Group 1 (native status 5/6): source slot 3, red, alpha configuration +18C=.35.
- Groups 2/3/4 (native status 1..4): original CommanderID owner flag true selects slot 1 yellow, false selects slot 2 purple.
- An independently checked special candidate branch selects slot 4 green. Raw status 0 alone does not prove this branch.

An unknown owner must remain unknown; absence from a partial active-claim list does not by itself establish someone else's ownership.

## Validation limits

The Core float path `GalaxyMapFilter.GetOriginalRgba` preserves the verified
raw table values, including Stronghold R=100, Frontline G=2 and actual Power
definition RGB above one. It never reconstructs those values from the SDR byte
label colour. Its nullable result distinguishes an unavailable source from an
explicitly transparent source. W is the actual source alpha multiplied once by
the independent filter opacity; territory geometry opacity is not a point alpha.
Packed original stellar colours retain their high-byte alpha. Unrecovered
extra-economy/tool palette entries and ambiguous colony ownership/special candidate
branches return null so the renderer can identify a fallback. Three focused
Core tests cover HDR, raw-versus-linear Power colours, packed alpha, unavailable
sources, selected service source and population/colony opacity. This API alone
does not certify the downstream GPU material or final image.

`XFENavigationGalaxyAppearanceSelfTest` expects mask 255. It covers original classification boundaries, exact type/subclass keys, no-write misses, cycle rejection, blend endpoints and quantisation, logarithmic size endpoints and special types, original luminosity group selection, and original temperature-bucket address expressions. The isolated production-source fixture passed all eight adapter groups at 255. These checks validate the port and its guard behaviour; they do not establish live original-game or visual equivalence. No game was running for this work.