export class Keyframe {
    /**
     * 一个关键帧（关键点）, 目前只支持线性插值
     * @param {number} timeOffset - 相对于素材起始点的时间偏移量
     * @param {number} value - 关键帧的值
     */
    constructor(timeOffset: number, value: number);
    kfId: string;
    timeOffset: number;
    values: number[];
    exportJson(): {
        curveType: string;
        graphID: string;
        left_control: {
            x: number;
            y: number;
        };
        right_control: {
            x: number;
            y: number;
        };
        id: string;
        time_offset: number;
        values: number[];
    };
}
export class KeyframeList {
    /**
     * 关键帧列表, 记录与某个特定属性相关的一系列关键帧
     * @param {string} keyframeProperty - 关键帧对应的属性
     */
    constructor(keyframeProperty: string);
    listId: string;
    keyframeProperty: string;
    keyframes: any[];
    addKeyframe(timeOffset: any, value: any): void;
    exportJson(): {
        id: string;
        keyframe_list: any[];
        material_id: string;
        property_type: string;
    };
}
export const KeyframeProperty: Readonly<{
    POSITION_X: "KFTypePositionX";
    POSITION_Y: "KFTypePositionY";
    ROTATION: "KFTypeRotation";
    SCALE_X: "KFTypeScaleX";
    SCALE_Y: "KFTypeScaleY";
    UNIFORM_SCALE: "UNIFORM_SCALE";
    ALPHA: "KFTypeAlpha";
    SATURATION: "KFTypeSaturation";
    CONTRAST: "KFTypeContrast";
    BRIGHTNESS: "KFTypeBrightness";
    VOLUME: "KFTypeVolume";
}>;
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