import * as THREE from 'three';
/** Iso projection flavor: `true-iso` tilts atan(1/√2) ≈ 35.26°, `dimetric` uses the game-friendly 30°. */
export type IsoFlavor = 'true-iso' | 'dimetric';
/** Options for {@link createIsoCamera}: vertical `viewSize` in world units, projection `flavor`, and near/far planes. */
export interface IsoCameraOptions {
    viewSize?: number;
    flavor?: IsoFlavor;
    near?: number;
    far?: number;
}
/**
 * Orthographic isometric camera: positioned on a 45°-yaw tilted orbit and
 * sized so the frustum spans `viewSize` world units vertically. The chosen
 * `viewSize`/`flavor` are stored in `userData` so {@link resizeIsoCamera}
 * and zoom code can rebuild the frustum.
 *
 * @param aspect - Viewport width / height.
 * @param options - View size, flavor, near/far planes.
 * @returns A configured `OrthographicCamera` looking at the origin.
 */
export declare function createIsoCamera(aspect: number, { viewSize, flavor, near, far, }?: IsoCameraOptions): THREE.OrthographicCamera;
/** Rebuild an iso camera's frustum for a new aspect ratio (and any updated `userData.viewSize`), then update the projection matrix. */
export declare function resizeIsoCamera(camera: THREE.OrthographicCamera, aspect: number): void;
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