import type { Point } from '../../geometry/index.js';
/**
 * The fit function for an affine transformation.
 * Get the best transformation parameters for the given source and destination.
 * @param source - Source points.
 * @param destination - Destination points.
 * @returns The model parameters in the format [angle, xTranslation, yTranslation]
 */
export declare function affineFitFunction(source: Point[], destination: Point[]): number[];
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