Method _resetRoamController

src/component/thumbnail/ThumbnailView.ts:221–253

(
        roamType: RoamOptionMixin['roam'],
    )

    }

    private _resetRoamController(
        roamType: RoamOptionMixin['roam'],
    ): void {
        const api = this._api;

        let roamController = this._roamController;
        if (!roamController) {
            roamController = this._roamController = new RoamController(api.getZr());
        }

        if (!roamType || !this._isEnabled()) {
            roamController.disable();
            return;
        }

        roamController.enable(roamType, {
            api: api,
            zInfo: {component: this._model},
            triggerInfo: {
                roamTrigger: null,
                isInSelf: (e, x, y) => this._contentRect.contain(x, y)
            }
        });
        roamController
            .off('pan')
            .off('zoom')
            .on('pan', bind(this._onPan, this))
            .on('zoom', bind(this._onZoom, this));
        // PENDING: Currently roaming animation (when roaming args are changed;
        // e.g., `center` and `zoom` are changed) is not supported in thumbnail.
        // Animation should be able to be interrupted on pan and zoom, and synchronize
        // back to the target. See VIEW_COORD_SYS_ANIMATION.
    }

    private _onPan(event: RoamEventParams['pan']): void {
        const trans = this._transThisToTarget;