import { PptxElement } from 'pptx-viewer-core';
import { SmartArt3DModel } from 'pptx-viewer-shared';
/**
 * Pure model resolution for the Three.js SmartArt renderer (Svelte port of
 * Vue's `SmartArt3DRenderer.vue` `model` computed). Builds the 2D fallback
 * layout via the shared engine, resolved with the same palette the SVG
 * `SmartArtView` uses, then extrudes it into a spatial 3D model. The vanilla
 * three.js scene mounter that consumes this lives behind the
 * `pptx-viewer-shared/smartart-3d` subpath so `three` stays optional; this
 * module has no `three` import and stays unit-testable without a DOM.
 */
/**
 * Build the 3D model for `element`, or `undefined` when it is not a SmartArt
 * diagram or has no renderable nodes (the caller should fall back to the SVG
 * `SmartArtView` in that case).
 */
export declare function buildSmartArt3DViewModel(element: PptxElement): SmartArt3DModel | undefined;
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