After using the zoomTo method in OpenSeadragon, you can call viewport.applyConstraints() to ensure the viewport is adjusted to satisfy the configured constraints. This is useful when zoom or pan operations exceed the viewport constraints.
Here is an example:
In the code above, we first set the viewport zoom level to a specified value. Then, by calling the applyConstraints method, the viewport is adjusted to satisfy its constraints. In other words, if the specified zoom level exceeds the configured constraints, the zoom level will be adjusted to fit within those constraints.
This approach is useful for ensuring that the viewport always maintains a valid state, even when the specified zoom level or position exceeds the constraints.