# Prevent calling scrollToPart if node is x% (or majorly) visible on viewport

Hi Walter,

In my diagram, when a node not completely visible on viewport is selected, I am calling `scrollToPart` to make the node visible in the viewport. I am using below to check the visibilty condition -

``````diagram.viewportBounds.containsRect(selection.actualBounds)
``````

Now, I have a requirement where -

• If the node is x% (e.g. 80%) visible, then we don’t want call `scrollToPart` to make it visible

``````myDiagram.viewportBounds.copy().intersectRect(node.actualBounds)