# Camera in maplibre::render::camera - Rust
API documentation for the Rust `Camera` struct in crate `maplibre`.
Keywords: rust, rustlang, rust-lang, Camera

# Struct maplibre::render::camera::Camera

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    pub struct Camera {
        pub position: Point3<f64>,
        pub yaw: Rad<f64>,
        pub pitch: Rad<f64>,
        pub width: f64,
        pub height: f64,
    }

## Fields

`position: Point3<f64>` `yaw: Rad<f64>` `pitch: Rad<f64>` `width: f64` `height: f64`

## Implementations

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### impl Camera

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#### pub fn new<V: Into<Point3<f64>>, Y: Into<Rad<f64>>, P: Into<Rad<f64>>>(
position: V,
yaw: Y,
pitch: P,
width: u32,
height: u32
) -> Self

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#### pub fn resize(&mut self, width: u32, height: u32)

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#### fn calc_matrix(&self) -> Matrix4<f64>

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#### pub fn calc_view_proj(&self, perspective: &Perspective) -> ViewProjection

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#### fn clip_to_window_transform(&self) -> Matrix4<f64>

A transform which can be used to transfrom between clip and window space. Adopted from here (Direct3D).

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#### fn clip_to_window(&self, clip: &Vector4<f64>) -> Vector4<f64>

Transforms coordinates in clip space to window coordinates.

Adopted from here (Direct3D).

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#### fn clip_to_window_vulkan(&self, clip: &Vector4<f64>) -> Vector3<f64>

Alternative implementation to `clip_to_window`. Transforms coordinates in clip space to window coordinates.

Adopted from here and here (Vulkan).

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#### fn window_to_world(
&self,
window: &Vector3<f64>,
inverted_view_proj: &InvertedViewProjection
) -> Vector3<f64>

Order of transformations reversed: https://computergraphics.stackexchange.com/questions/6087/screen-space-coordinates-to-eye-space-conversion/6093 `w` is lost.

OpenGL explanation: https://www.khronos.org/opengl/wiki/Compute_eye_space_from_window_space#From_window_to_ndc

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#### fn window_to_world_nalgebra(
window: &Vector3<f64>,
inverted_view_proj: &InvertedViewProjection,
width: f64,
height: f64
) -> Vector3<f64>

Alternative implementation to `window_to_world`

Adopted from here.

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#### pub fn window_to_world_at_ground(
&self,
window: &Vector2<f64>,
inverted_view_proj: &InvertedViewProjection
) -> Option<Vector3<f64>>

Gets the world coordinates for the specified `window` coordinates on the `z=0` plane.

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#### pub fn view_region_bounding_box(
&self,
inverted_view_proj: &InvertedViewProjection
) -> Option<Aabb2<f64>>

Calculates an `Aabb2` bounding box which contains at least the visible area on the `z=0` plane. One can think of it as being the bounding box of the geometry which forms the intersection between the viewing frustum and the `z=0` plane.

This implementation works in the world 3D space. It casts rays from the corners of the window to calculate intersections points with the `z=0` plane. Then a bounding box is calculated.

Note: It is possible that no such bounding box exists. This is the case if the `z=0` plane is not in view.

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#### pub fn view_region_bounding_box_ndc(
&self,
perspective: &Perspective
) -> Option<Aabb2<f64>>

An alternative implementation for `view_bounding_box`.

This implementation works in the NDC space. We are creating a plane in the world 3D space. Then we are transforming it to the NDC space. In NDC space it is easy to calculate the intersection points between an Aabb3 and a plane. The resulting Aabb2 is returned.

## Trait Implementations

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### impl Clone for Camera

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#### fn clone(&self) -> Camera

Returns a copy of the value. Read more

1.0.0 · source

#### fn clone_from(&mut self, source: &Self)

Performs copy-assignment from `source`. Read more

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### impl Debug for Camera

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#### fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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### impl SignificantlyDifferent<Camera> for Camera

#### type Epsilon = f64

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#### fn ne(&self, other: &Self, epsilon: Self::Epsilon) -> bool

This method tests for `self` and `other` values to be significantly different

## Auto Trait Implementations

### impl RefUnwindSafe for Camera

### impl Send for Camera

### impl Sync for Camera

### impl Unpin for Camera

### impl UnwindSafe for Camera

## Blanket Implementations

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### impl<T> Any for T where
T: 'static + ?Sized,

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#### pub fn type_id(&self) -> TypeId

Gets the `TypeId` of `self`. Read more

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### impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

#### pub fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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### impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

#### pub fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

### impl<T> Downcast for T where
T: Any,

#### pub fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>

Convert `Box<dyn Trait>` (where `Trait: Downcast`) to `Box<dyn Any>`. `Box<dyn Any>` can then be further `downcast` into `Box<ConcreteType>` where `ConcreteType` implements `Trait`. Read more

#### pub fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>

Convert `Rc<Trait>` (where `Trait: Downcast`) to `Rc<Any>`. `Rc<Any>` can then be further `downcast` into `Rc<ConcreteType>` where `ConcreteType` implements `Trait`. Read more

#### pub fn as_any(&self) -> &(dyn Any + 'static)

Convert `&Trait` (where `Trait: Downcast`) to `&Any`. This is needed since Rust cannot generate `&Any`’s vtable from `&Trait`’s. Read more

#### pub fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Convert `&mut Trait` (where `Trait: Downcast`) to `&Any`. This is needed since Rust cannot generate `&mut Any`’s vtable from `&mut Trait`’s. Read more

### impl<T> Downcast<T> for T

#### pub fn downcast(&self) -> &T

### impl<T> DowncastSync for T where
T: Any + Send + Sync,

#### pub fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Send + Sync + 'static>

Convert `Arc<Trait>` (where `Trait: Downcast`) to `Arc<Any>`. `Arc<Any>` can then be further `downcast` into `Arc<ConcreteType>` where `ConcreteType` implements `Trait`. Read more

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### impl<T> From<T> for T

const: unstable · source

#### pub fn from(t: T) -> T

Returns the argument unchanged.

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### impl<T> Instrument for T

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#### fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided `Span`, returning an `Instrumented` wrapper. Read more

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#### fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current `Span`, returning an `Instrumented` wrapper. Read more

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### impl<T, U> Into<U> for T where
U: From<T>,

const: unstable · source

#### pub fn into(self) -> U

Calls `U::from(self)`.

That is, this conversion is whatever the implementation of `From<T> for U` chooses to do.

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### impl<T> Same<T> for T

#### type Output = T

Should always be `Self`

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### impl<T> ToOwned for T where
T: Clone,

#### type Owned = T

The resulting type after obtaining ownership.

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#### pub fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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#### pub fn clone_into(&self, target: &mut T)

🔬 This is a nightly-only experimental API. (`toowned_clone_into`)

Uses borrowed data to replace owned data, usually by cloning. Read more

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### impl<T, U> TryFrom<U> for T where
U: Into<T>,

#### type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

#### pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

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### impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

#### type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

const: unstable · source

#### pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

### impl<T> Upcast<T> for T

#### pub fn upcast(&self) -> Option<&T>

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### impl<T> WithSubscriber for T

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#### fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,

Attaches the provided `Subscriber` to this type, returning a `WithDispatch` wrapper. Read more

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#### fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default `Subscriber` to this type, returning a `WithDispatch` wrapper. Read more