public interface TreeMapLayout
The sizes are scale-independent. The only thing that matter is that any two children who have the same parent use the same units. Technically, this is up to the layout implementation, but in general each level fills the available area with each child taking a proportional amount of space.
Rectangle2D layout(Rectangle2D boundary, double areas, int level)
areasarray. The level indicates the current level in the hierarchy (see
boundaryrectangle contains the area within which all children should be layed out.
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