import { Keyframe } from '@easytwin/runtime';
export declare function getBoundsOfCurve(x0: number, y0: number, x1: number, y1: number, x2: number, y2: number, x3: number, y3: number): {
    left: number;
    right: number;
    top: number;
    bottom: number;
    points: {
        X: number;
        Y: number;
    }[];
    tvalues: number[];
};
export declare function getBoundsOfCurveByKeys(keys: Keyframe[]): {
    minx: number;
    maxx: number;
    miny: number;
    maxy: number;
};