Method tweenUpdate

packages/fairygui/src/scroll/ScrollPane.ts:877–906

()

    }

    private tweenUpdate(): void {
        const dt = 1 / 60;
        const nx = this.runTween('x', dt);
        const ny = this.runTween('y', dt);

        this._containerX = nx;
        this._containerY = ny;

        if (this._tweening === 2) {
            if (this._overlapWidth > 0) {
                this._scrollX = clamp(-nx, 0, this._overlapWidth);
            }
            if (this._overlapHeight > 0) {
                this._scrollY = clamp(-ny, 0, this._overlapHeight);
            }
        }

        if (this._tweenChangeX === 0 && this._tweenChangeY === 0) {
            this._tweening = 0;
            if (this._tweener) {
                this._tweener.kill();
                this._tweener = null;
            }

            this.emit(FGUIEvents.SCROLL);
            this.emit(FGUIEvents.SCROLL_END);
        } else {
            this.emit(FGUIEvents.SCROLL);
        }
    }

    private runTween(axis: 'x' | 'y', dt: number): number {
        let newValue: number;