import { type PageMesh } from './mesh';
/**
 * Flat page turn — the plainest flip, matching the CSS renderer. The leaf stays a rigid
 * flat sheet and rotates around the spine (angle 0→π), going edge-on at the midpoint. No
 * cylinder bend; GPU-rendered here with the shared perspective so it reads like the CSS fold.
 */
export declare function deformSimple(mesh: PageMesh, W: number, H: number, t: number): void;