import { animation, AnimationClip, IVec2, SpriteFrame } from "cc";

/**帧动画片段创建工具 */
export default class FrameClip{
    private static key: string = '';
    /**动画数据 */
    private static _animationClipInfoMap: Map<string, AnimationClip> = new Map();
    static getAnimationClip(UrlName: string, actionName: string, res: SpriteFrame[], scale: IVec2[], speed: number = 1) {
        this.key = `${UrlName}_${actionName}`;
        let tAnimationClip: AnimationClip = this._animationClipInfoMap.get(this.key);
        if (!tAnimationClip) {
            tAnimationClip = AnimationClip.createWithSpriteFrames(res, 60);

            /**图集锚点动画添加 */
            if (scale && scale.length) {
                let curve = tAnimationClip.getTrack(0).channels()[0].curve.times() as number[];
                let Track = new animation.VectorTrack();
                Track.path.toComponent("cc.UITransform");
                Track.path.toProperty("anchorPoint");
                Track.componentsCount = curve.length;
                /** 0 : X */
                for (let m = 0; m < curve.length; m++) {
                    Track.channels()[0].curve.addKeyFrame(curve[m], scale[m].x)
                }
                /** 1 : Y */
                for (let m = 0; m < curve.length; m++) {
                    Track.channels()[1].curve.addKeyFrame(curve[m], scale[m].y)
                }
                tAnimationClip.addTrack(Track)
            }

            tAnimationClip.speed = speed;
            tAnimationClip.name = actionName;
            this._animationClipInfoMap.set(this.key, tAnimationClip);
        }
        return tAnimationClip;
    }

    static ClearAllClip() {
        delete this._animationClipInfoMap;
        this._animationClipInfoMap = new Map();
    }

}