export type Size = {
    width: number;
    height: number;
};
export type Point = {
    x: number;
    y: number;
};
export declare class ScratchGrid {
    percentCompleted: number;
    readonly size: Size;
    private readonly grid;
    private readonly totalCellsCount;
    private readonly cellWidth;
    private markedCellsCount;
    constructor(rectSize: Size, lineWidth: number);
    update(scratchPoint: Point): void;
    isCellScratched(brush: Point): boolean;
}
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