The pruned nodes (in red) represent entire regions of space that the algorithm never examines. The points inside those regions are never checked. Compare the "Nodes Visited" count to the total number of points. The quadtree is doing far less work than a brute-force scan.
puts our world at ever-growing risk.
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17. What is a commission rate? Commission rates are typically based on a percentage of the total sale and in some cases can also be a flat fee for each transaction. The rates are set by the merchant.
Drag to draw a query rectangle and watch which nodes get visited (blue) vs. pruned (red):