# TBox
TBox related methods


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## TBox.NearestEdge
```pascal
function TBox.NearestEdge(P: TPoint): TPoint; constref;
```

Returns the closest edge point to the TPoint `P`.

```{note}
By slacky
```


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## TBox.Intersect
```pascal
function TBox.Intersect(P: TPoint): TPoint; constref;
```

Returns the point on the edge where point `P` intersects with the edge when crossing to the mean of the box.


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## TBox.Invert
```pascal
function TBox.Invert(Area: TBox): TBoxArray; constref;
```

Returns the boxes which surround `Self` in the given `Area`.
Typically there is eight surroudning boxes:

  * Top Left
  * Mid Left
  * Bottom Left
  * Top Mid
  * Bottom Mid
  * Top Right
  * Mid Right
  * Bottom Right



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## TBox.Filter
```pascal
function TBox.Filter(testSet: TPointArray): TPointArray; constref;
```
Extract all the points from `testSet` that fits within this rectangle.