```
#[repr(C)]pub struct Box2D<T, U> {
pub min: Point2D<T, U>,
pub max: Point2D<T, U>,
}
```

## Expand description

A 2d axis aligned rectangle represented by its minimum and maximum coordinates.

## §Representation

This struct is similar to `Rect`

, but stores rectangle as two endpoints
instead of origin point and size. Such representation has several advantages over
`Rect`

representation:

- Several operations are more efficient with
`Box2D`

, including`intersection`

,`union`

, and point-in-rect. - The representation is less susceptible to overflow. With
`Rect`

, computation of second point can overflow for a large range of values of origin and size. However, with`Box2D`

, computation of`size`

cannot overflow if the coordinates are signed and the resulting size is unsigned.

A known disadvantage of `Box2D`

is that translating the rectangle requires translating
both points, whereas translating `Rect`

only requires translating one point.

## §Empty box

A box is considered empty (see `is_empty`

) if any of the following is true:

- it’s area is empty,
- it’s area is negative (
`min.x > max.x`

or`min.y > max.y`

), - it contains NaNs.

## Fields§

§`min: Point2D<T, U>`

§`max: Point2D<T, U>`

## Implementations§

source§### impl<T, U> Box2D<T, U>where
T: PartialOrd,

### impl<T, U> Box2D<T, U>where
T: PartialOrd,

source#### pub fn is_negative(&self) -> bool

#### pub fn is_negative(&self) -> bool

Returns true if the box has a negative area.

The common interpretation for a negative box is to consider it empty. It can be obtained by calculating the intersection of two boxes that do not intersect.

source#### pub fn intersects(&self, other: &Self) -> bool

#### pub fn intersects(&self, other: &Self) -> bool

Returns `true`

if the two boxes intersect.

source#### pub fn contains(&self, p: Point2D<T, U>) -> bool

#### pub fn contains(&self, p: Point2D<T, U>) -> bool

Returns `true`

if this box contains the point. Points are considered
in the box if they are on the front, left or top faces, but outside if they
are on the back, right or bottom faces.

source#### pub fn contains_box(&self, other: &Self) -> bool

#### pub fn contains_box(&self, other: &Self) -> bool

Returns `true`

if this box contains the interior of the other box. Always
returns `true`

if other is empty, and always returns `false`

if other is
nonempty but this box is empty.

source§### impl<T, U> Box2D<T, U>where
T: Copy + PartialOrd,

### impl<T, U> Box2D<T, U>where
T: Copy + PartialOrd,

#### pub fn to_non_empty(&self) -> Option<Self>

source#### pub fn intersection(&self, other: &Self) -> Option<Self>

#### pub fn intersection(&self, other: &Self) -> Option<Self>

Computes the intersection of two boxes, returning `None`

if the boxes do not intersect.

source#### pub fn intersection_unchecked(&self, other: &Self) -> Self

#### pub fn intersection_unchecked(&self, other: &Self) -> Self

Computes the intersection of two boxes without check whether they do intersect.

The result is a negative box if the boxes do not intersect. This can be useful for computing the intersection of more than two boxes, as it is possible to chain multiple intersection_unchecked calls and check for empty/negative result at the end.

#### pub fn union(&self, other: &Self) -> Self

source§### impl<T, U> Box2D<T, U>

### impl<T, U> Box2D<T, U>

source#### pub fn inflate(&self, width: T, height: T) -> Self

#### pub fn inflate(&self, width: T, height: T) -> Self

Inflates the box by the specified sizes on each side respectively.

source#### pub fn inner_box(&self, offsets: SideOffsets2D<T, U>) -> Self

#### pub fn inner_box(&self, offsets: SideOffsets2D<T, U>) -> Self

Calculate the size and position of an inner box.

Subtracts the side offsets from all sides. The horizontal, vertical and applicate offsets must not be larger than the original side length.

source#### pub fn outer_box(&self, offsets: SideOffsets2D<T, U>) -> Self

#### pub fn outer_box(&self, offsets: SideOffsets2D<T, U>) -> Self

Calculate the b and position of an outer box.

Add the offsets to all sides. The expanded box is returned.

source§### impl<T, U> Box2D<T, U>

### impl<T, U> Box2D<T, U>

source#### pub fn from_size(size: Size2D<T, U>) -> Self

#### pub fn from_size(size: Size2D<T, U>) -> Self

Creates a Box2D of the given size, at offset zero.

source#### pub fn from_points<I>(points: I) -> Self

#### pub fn from_points<I>(points: I) -> Self

Returns the smallest box containing all of the provided points.

source§### impl<T, U> Box2D<T, U>where
T: Copy,

### impl<T, U> Box2D<T, U>where
T: Copy,

source#### pub fn to_untyped(&self) -> Box2D<T, UnknownUnit>

#### pub fn to_untyped(&self) -> Box2D<T, UnknownUnit>

Drop the units, preserving only the numeric value.

source#### pub fn from_untyped(c: &Box2D<T, UnknownUnit>) -> Box2D<T, U>

#### pub fn from_untyped(c: &Box2D<T, UnknownUnit>) -> Box2D<T, U>

Tag a unitless value with units.

#### pub fn scale<S: Copy>(&self, x: S, y: S) -> Selfwhere
T: Mul<S, Output = T>,

source§### impl<T: NumCast + Copy, U> Box2D<T, U>

### impl<T: NumCast + Copy, U> Box2D<T, U>

source#### pub fn cast<NewT: NumCast>(&self) -> Box2D<NewT, U>

#### pub fn cast<NewT: NumCast>(&self) -> Box2D<NewT, U>

Cast from one numeric representation to another, preserving the units.

When casting from floating point to integer coordinates, the decimals are truncated as one would expect from a simple cast, but this behavior does not always make sense geometrically. Consider using round(), round_in or round_out() before casting.

source#### pub fn try_cast<NewT: NumCast>(&self) -> Option<Box2D<NewT, U>>

#### pub fn try_cast<NewT: NumCast>(&self) -> Option<Box2D<NewT, U>>

Fallible cast from one numeric representation to another, preserving the units.

When casting from floating point to integer coordinates, the decimals are truncated as one would expect from a simple cast, but this behavior does not always make sense geometrically. Consider using round(), round_in or round_out() before casting.

source#### pub fn to_usize(&self) -> Box2D<usize, U>

#### pub fn to_usize(&self) -> Box2D<usize, U>

Cast into an `usize`

box, truncating decimals if any.

When casting from floating point boxes, it is worth considering whether
to `round()`

, `round_in()`

or `round_out()`

before the cast in order to
obtain the desired conversion behavior.

source#### pub fn to_u32(&self) -> Box2D<u32, U>

#### pub fn to_u32(&self) -> Box2D<u32, U>

Cast into an `u32`

box, truncating decimals if any.

When casting from floating point boxes, it is worth considering whether
to `round()`

, `round_in()`

or `round_out()`

before the cast in order to
obtain the desired conversion behavior.

source§### impl<T, U> Box2D<T, U>where
T: Round,

### impl<T, U> Box2D<T, U>where
T: Round,

source#### pub fn round(&self) -> Self

#### pub fn round(&self) -> Self

Return a box with edges rounded to integer coordinates, such that
the returned box has the same set of pixel centers as the original
one.
Values equal to 0.5 round up.
Suitable for most places where integral device coordinates
are needed, but note that any translation should be applied first to
avoid pixel rounding errors.
Note that this is *not* rounding to nearest integer if the values are negative.
They are always rounding as floor(n + 0.5).

## Trait Implementations§

source§### impl<'de, T, U> Deserialize<'de> for Box2D<T, U>where
T: Deserialize<'de>,

### impl<'de, T, U> Deserialize<'de> for Box2D<T, U>where
T: Deserialize<'de>,

source§#### fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where
__D: Deserializer<'de>,

#### fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where
__D: Deserializer<'de>,

source§### impl<T: Copy + DivAssign, U> DivAssign<Scale<T, U, U>> for Box2D<T, U>

### impl<T: Copy + DivAssign, U> DivAssign<Scale<T, U, U>> for Box2D<T, U>

source§#### fn div_assign(&mut self, scale: Scale<T, U, U>)

#### fn div_assign(&mut self, scale: Scale<T, U, U>)

`/=`

operation. Read moresource§### impl<T: Copy + DivAssign, U> DivAssign<T> for Box2D<T, U>

### impl<T: Copy + DivAssign, U> DivAssign<T> for Box2D<T, U>

source§#### fn div_assign(&mut self, scale: T)

#### fn div_assign(&mut self, scale: T)

`/=`

operation. Read moresource§### impl<T: Copy + MulAssign, U> MulAssign<Scale<T, U, U>> for Box2D<T, U>

### impl<T: Copy + MulAssign, U> MulAssign<Scale<T, U, U>> for Box2D<T, U>

source§#### fn mul_assign(&mut self, scale: Scale<T, U, U>)

#### fn mul_assign(&mut self, scale: Scale<T, U, U>)

`*=`

operation. Read moresource§### impl<T: Copy + MulAssign, U> MulAssign<T> for Box2D<T, U>

### impl<T: Copy + MulAssign, U> MulAssign<T> for Box2D<T, U>

source§#### fn mul_assign(&mut self, scale: T)

#### fn mul_assign(&mut self, scale: T)

`*=`

operation. Read more