Simple demo page to show viewport.fitBounds() with and without constraints. The viewer is set up with visibilityRatio = 1 and constrainDuringPan = true to clearly demonstrate the constraints.

### Pick a method to use:

    viewport.fitBounds(bounds); //Ignores constraints

    viewport.fitBoundsWithConstraints(bounds);

    viewport.fitBoundsWithConstraints(bounds, true); //immediate

    //Initially ignore constraints
    viewport.fitBounds(bounds);

    //Apply constraints after 1 second delay
    setTimeout(() => viewport.applyConstraints(), 1000);

### Click to fit overlay bounds:

#### overlay.getBounds(viewer.viewport):

    Pick an overlay above to show the bounds