What is the name of the effect of a floating genealogical tree (floating scheme, orgchart), have you seen examples on action script e, html5?

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What is the name of the effect of a floating genealogical tree (floating scheme, orgchart), have you seen examples on action script e, html5?
When you hover over the mouse, the lines between the blocks shorten or lengthen and move smoothly, up / down, right / left.
Google did not help, I think I'm looking for something else. It's kind of like a tag cloud, but just text with borders and connecting lines. I want to study this topic, if there are examples, links, keywords, help plz, urgently needed.