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Sphere export - #15

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EngiBob:sphere-export
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Sphere export#15
EngiBob wants to merge 3 commits into
xandergos:masterfrom
EngiBob:sphere-export

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@EngiBob EngiBob commented Feb 25, 2026

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EngiBob and others added 3 commits February 24, 2026 21:19
New self-contained commands for exporting cube-sphere planet meshes:
- export-faces: sample 6 cube face heightmaps from the world pipeline
- apply-noise: add slope-adaptive Perlin noise detail to face heightmaps
- faces-to-obj: build watertight OBJ mesh from face heightmaps

Adds planet_period support to WorldPipeline for seamless east-west wrapping
of noise and conditioning signals.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Write mesh sidecar to <stem>_obj.json instead of <stem>.json so it
doesn't overwrite the face heightmap metadata JSON.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Documents the full export-faces → apply-noise → faces-to-obj → Blender
workflow with recommended parameters.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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