import { AssetError, type MeshAsset, type Result } from '@forgeax/engine-types';
/**
 * Floats per vertex for the procedural-geometry interleaved buffer that the
 * factory bodies fill in (position(3) + normal(3) + uv(2)). The
 * `meshFromInterleaved` helper expands this into the runtime 12-float
 * (position + normal + uv + tangent) layout consumed by the standard
 * pipeline (feat-20260518 M4 D-10).
 */
export declare const FACTORY_FLOATS_PER_VERTEX = 8;
/**
 * Floats per vertex emitted by the factories' final MeshAsset
 * `vertices` Float32Array buffer: position(3) + normal(3) + uv(2) +
 * tangent(4) = 12. Procedural meshes feed both the standard and unlit
 * pipelines (D-10); BUILTIN_CUBE / TRIANGLE keep their 6-floats inline
 * shape (D-2 lock).
 */
export declare const PROCEDURAL_FLOATS_PER_VERTEX = 12;
/**
 * Shared helper: build MeshAsset POD from the factory-emitted 8-floats
 * interleaved buffer (position + normal + uv) plus index list. Computes
 * per-vertex tangent (vec4) via `computeTangentVec4` (M4 / D-2 path A) and
 * expands the buffer to the runtime 12-floats stride (position + normal +
 * uv + tangent). All six procedural factories funnel through this helper
 * so the tangent SSOT lives in `geometry/tangent.ts` (D-7).
 */
export declare function meshFromInterleaved(vertices: Float32Array, indices: Uint16Array | Uint32Array): Result<MeshAsset, AssetError>;
/** Shared helper: AssetError for degenerate geometry parameters. */
export declare function degenerate(detail: string): AssetError;
/**
 * Build a procedural box geometry aligned with Three.js r184 BoxGeometry.
 *
 * @param width positive X-axis extent
 * @param height positive Y-axis extent
 * @param depth positive Z-axis extent
 * @param widthSegments >= 1 subdivisions along X
 * @param heightSegments >= 1 subdivisions along Y
 * @param depthSegments >= 1 subdivisions along Z
 * @returns `Result<MeshAsset, AssetError>` with attributes populated
 */
export declare function createBoxGeometry(width: number, height: number, depth: number, widthSegments?: number, heightSegments?: number, depthSegments?: number): Result<MeshAsset, AssetError>;
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