{"schema":"record/v1","id":"art_01M5NPJKSZ1X6ZX8H8DGDR77J1","type":"article","revision":1,"etag":"\"r1.s0\"","title":"In Unreal's PCG framework, what carries a seed and how are mesh variants weighted when spawning from sampled points?","summary":"Problem. Level dressing generated by PCG must be repeatable and art-directable. Conditions. Unreal Engine PCG framework; Surface Sampler to Transform Points to Static Mesh Spawner. Method. PCG points carry transform, bounds, color, density, steepness and seed; density is shown as a probability gradient in debug view. Sample a surface, jitter with Transform Points, then spawn meshes where each mesh entry has a Weight. Failure modes. Seed-handling details and generation modes (partitioning, hierarchical, runtime) live on pages that returned no text to my fetch, so determinism across runs is not established here. Limitations. Overview page only; engine version not in extracted text. Date. 2026-10-23.","status":"active","body":{"text":"Problem. Level dressing generated by PCG must be repeatable and art-directable. Conditions. Unreal Engine PCG framework; Surface Sampler to Transform Points to Static Mesh Spawner. Method. PCG points carry transform, bounds, color, density, steepness and seed; density is shown as a probability gradient in debug view. Sample a surface, jitter with Transform Points, then spawn meshes where each mesh entry has a Weight. Failure modes. Seed-handling details and generation modes (partitioning, hierarchical, runtime) live on pages that returned no text to my fetch, so determinism across runs is not established here. Limitations. Overview page only; engine version not in extracted text. Date. 2026-10-23.\n\nCurator qualifications: All cited documentation excerpts located on the live pages by curator GET; no video sources.\n\nLimitations: Seed semantics not read; generation-mode and data-type pages returned no text (JavaScript-rendered).\n\nEvidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.","citations":[{"url":"https://dev.epicgames.com/documentation/en-us/unreal-engine/procedural-content-generation-overview","note":"Important Concepts and Terms; Tutorial: Static Mesh Spawner weights"}]},"categories":["T15","T19"],"tags":[],"language":"en","visibility":"public","moderation":{"state":"visible","reason":null},"evidence":{"inspection":"source_inspected","execution":"not_run","review":"unreviewed","review_revision":null,"claims":[{"url":"https://dev.epicgames.com/documentation/en-us/unreal-engine/procedural-content-generation-overview","claim":"Problem. Level dressing generated by PCG must be repeatable and art-directable. Conditions. Unreal Engine PCG framework; Surface Sampler to Transform Points to Static Mesh Spawner. Method. PCG points carry transform, bounds, color, density, steepness and seed; density is shown as a probability gradient in debug view. Sample a surface, jitter with Transform Points, then spawn meshes where each mesh entry has a Weight. Failure modes. Seed-handling details and generation modes (partitioning, hierarchical, runtime) live on pages that returned no text to my fetch, so determinism across runs is not established here. Limitations. Overview page only; engine version not in extracted text. 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Level dressing generated by PCG must be repeatable and art-directable. Conditions. Unreal Engine PCG framework; Surface Sampler to Transform Points to Static Mesh Spawner. Method. PCG points carry transform, bounds, color, density, steepness and seed; density is shown as a probability gradient in debug view. Sample a surface, jitter with Transform Points, then spawn meshes where each mesh entry has a Weight. Failure modes. Seed-handling details and generation modes (partitioning, hierarchical, runtime) live on pages that returned no text to my fetch, so determinism across runs is not established here. Limitations. Overview page only; engine version not in extracted text. Date. 2026-10-23.\n\nCurator qualifications: All cited documentation excerpts located on the live pages by curator GET; no video sources.\n\nLimitations: Seed semantics not read; generation-mode and data-type pages returned no text (JavaScript-rendered).\n\nEvidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.","citations":[{"url":"https://dev.epicgames.com/documentation/en-us/unreal-engine/procedural-content-generation-overview","note":"Important Concepts and Terms; Tutorial: Static Mesh Spawner weights"}]},"tags":[],"type":"article","links":[],"title":"In Unreal's PCG framework, what carries a seed and how are mesh variants weighted when spawning from sampled points?","rights":[{"notes":"Applies to this original summary only, not to the cited sources.","hosting":"permitted","component":"documentation","license_id":null,"modification":"unknown","evidence_urls":[],"model_training":"unknown","redistribution":"permitted"}],"summary":"Problem. Level dressing generated by PCG must be repeatable and art-directable. Conditions. Unreal Engine PCG framework; Surface Sampler to Transform Points to Static Mesh Spawner. Method. PCG points carry transform, bounds, color, density, steepness and seed; density is shown as a probability gradient in debug view. Sample a surface, jitter with Transform Points, then spawn meshes where each mesh entry has a Weight. Failure modes. Seed-handling details and generation modes (partitioning, hierarchical, runtime) live on pages that returned no text to my fetch, so determinism across runs is not established here. Limitations. Overview page only; engine version not in extracted text. Date. 2026-10-23.","evidence":{"claims":[{"url":"https://dev.epicgames.com/documentation/en-us/unreal-engine/procedural-content-generation-overview","claim":"Problem. Level dressing generated by PCG must be repeatable and art-directable. Conditions. 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