import { World } from "koota";
//#region src/ecs/systems/transformSyncSystem.d.ts
/**
 * Sync transforms to GPU instance matrices AND `sprite.matrixWorld`.
 *
 * Position, rotation, and scale are read directly from the Object3D via
 * spriteArr (flat array indexed by entity SoA index). Same O(1) array
 * access pattern as all other SoA stores — zero hash overhead.
 *
 * This pass is the SINGLE WRITER of a batched sprite's GPU transform.
 * Auto-orchestrated sprites retain their real source parent, while explicit
 * SpriteGroup sprites use the owning group as their hierarchy boundary.
 * The source world matrix is retained for picking/debugging. The GPU slot is
 * relative to the owning SpriteGroup, whose batch mesh carries the root world
 * transform. Moving the shared root therefore does not rewrite every slot.
 *
 * UV writes used to live here too (under the comment "UV sync is folded
 * into transformSyncSystem"). Phase 3 of the perf roadmap moved UV to
 * setter-side direct writes via `Sprite2D.setFrame` → `mesh.writeUV`,
 * so this system is now matrix-only.
 */
declare function transformSyncSystem(world: World): void;
//#endregion
export { transformSyncSystem };
//# sourceMappingURL=transformSyncSystem.d.ts.map