Struct bevy::render::prelude::OrthographicProjection

pub struct OrthographicProjection {
    pub near: f32,
    pub far: f32,
    pub viewport_origin: Vec2,
    pub scaling_mode: ScalingMode,
    pub scale: f32,
    pub area: Rect,
}
Expand description

Project a 3D space onto a 2D surface using parallel lines, i.e., unlike PerspectiveProjection, the size of objects remains the same regardless of their distance to the camera.

The volume contained in the projection is called the view frustum. Since the viewport is rectangular and projection lines are parallel, the view frustum takes the shape of a cuboid.

Note that the scale of the projection and the apparent size of objects are inversely proportional. As the size of the projection increases, the size of objects decreases.

§Examples

Configure the orthographic projection to one world unit per 100 window pixels:

let projection = Projection::Orthographic(OrthographicProjection {
    scaling_mode: ScalingMode::WindowSize(100.0),
    ..OrthographicProjection::default()
});

Fields§

§near: f32

The distance of the near clipping plane in world units.

Objects closer than this will not be rendered.

Defaults to 0.0

§far: f32

The distance of the far clipping plane in world units.

Objects further than this will not be rendered.

Defaults to 1000.0

§viewport_origin: Vec2

Specifies the origin of the viewport as a normalized position from 0 to 1, where (0, 0) is the bottom left and (1, 1) is the top right. This determines where the camera’s position sits inside the viewport.

When the projection scales due to viewport resizing, the position of the camera, and thereby viewport_origin, remains at the same relative point.

Consequently, this is pivot point when scaling. With a bottom left pivot, the projection will expand upwards and to the right. With a top right pivot, the projection will expand downwards and to the left. Values in between will caused the projection to scale proportionally on each axis.

Defaults to (0.5, 0.5), which makes scaling affect opposite sides equally, keeping the center point of the viewport centered.

§scaling_mode: ScalingMode

How the projection will scale to the viewport.

Defaults to ScalingMode::WindowSize(1.0)

§scale: f32

Scales the projection.

As scale increases, the apparent size of objects decreases, and vice versa.

Note: scaling can be set by scaling_mode as well. This parameter scales on top of that.

This property is particularly useful in implementing zoom functionality.

Defaults to 1.0.

§area: Rect

The area that the projection covers relative to viewport_origin.

Bevy’s camera_system automatically updates this value when the viewport is resized depending on OrthographicProjection’s other fields. In this case, area should not be manually modified.

It may be necessary to set this manually for shadow projections and such.

Trait Implementations§

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impl CameraProjection for OrthographicProjection

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fn get_clip_from_view(&self) -> Mat4

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fn update(&mut self, width: f32, height: f32)

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fn far(&self) -> f32

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fn get_frustum_corners(&self, z_near: f32, z_far: f32) -> [Vec3A; 8]

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fn compute_frustum(&self, camera_transform: &GlobalTransform) -> Frustum

Compute camera frustum for camera with given projection and transform. Read more
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impl Clone for OrthographicProjection

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fn clone(&self) -> OrthographicProjection

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Component for OrthographicProjection
where OrthographicProjection: Send + Sync + 'static,

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const STORAGE_TYPE: StorageType = bevy_ecs::component::StorageType::Table

A constant indicating the storage type used for this component.
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fn register_component_hooks(_hooks: &mut ComponentHooks)

Called when registering this component, allowing mutable access to its ComponentHooks.
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impl Debug for OrthographicProjection

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

Formats the value using the given formatter. Read more
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impl Default for OrthographicProjection

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fn default() -> OrthographicProjection

Returns the “default value” for a type. Read more
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impl From<OrthographicProjection> for Projection

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fn from(p: OrthographicProjection) -> Projection

Converts to this type from the input type.
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impl FromReflect for OrthographicProjection
where OrthographicProjection: Any + Send + Sync, f32: FromReflect + TypePath + RegisterForReflection, Vec2: FromReflect + TypePath + RegisterForReflection, ScalingMode: FromReflect + TypePath + RegisterForReflection, Rect: FromReflect + TypePath + RegisterForReflection,

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fn from_reflect( reflect: &(dyn Reflect + 'static), ) -> Option<OrthographicProjection>

Constructs a concrete instance of Self from a reflected value.
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fn take_from_reflect( reflect: Box<dyn Reflect>, ) -> Result<Self, Box<dyn Reflect>>

Attempts to downcast the given value to Self using, constructing the value using from_reflect if that fails. Read more
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impl GetTypeRegistration for OrthographicProjection
where OrthographicProjection: Any + Send + Sync, f32: FromReflect + TypePath + RegisterForReflection, Vec2: FromReflect + TypePath + RegisterForReflection, ScalingMode: FromReflect + TypePath + RegisterForReflection, Rect: FromReflect + TypePath + RegisterForReflection,

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fn get_type_registration() -> TypeRegistration

Returns the default TypeRegistration for this type.
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fn register_type_dependencies(registry: &mut TypeRegistry)

Registers other types needed by this type. Read more
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impl Reflect for OrthographicProjection
where OrthographicProjection: Any + Send + Sync, f32: FromReflect + TypePath + RegisterForReflection, Vec2: FromReflect + TypePath + RegisterForReflection, ScalingMode: FromReflect + TypePath + RegisterForReflection, Rect: FromReflect + TypePath + RegisterForReflection,

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fn get_represented_type_info(&self) -> Option<&'static TypeInfo>

Returns the TypeInfo of the type represented by this value. Read more
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fn into_any(self: Box<OrthographicProjection>) -> Box<dyn Any>

Returns the value as a Box<dyn Any>.
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fn as_any(&self) -> &(dyn Any + 'static)

Returns the value as a &dyn Any.
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fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Returns the value as a &mut dyn Any.
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fn into_reflect(self: Box<OrthographicProjection>) -> Box<dyn Reflect>

Casts this type to a boxed reflected value.
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fn as_reflect(&self) -> &(dyn Reflect + 'static)

Casts this type to a reflected value.
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fn as_reflect_mut(&mut self) -> &mut (dyn Reflect + 'static)

Casts this type to a mutable reflected value.
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fn clone_value(&self) -> Box<dyn Reflect>

Clones the value as a Reflect trait object. Read more
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fn set(&mut self, value: Box<dyn Reflect>) -> Result<(), Box<dyn Reflect>>

Performs a type-checked assignment of a reflected value to this value. Read more
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fn try_apply( &mut self, value: &(dyn Reflect + 'static), ) -> Result<(), ApplyError>

Tries to apply a reflected value to this value. Read more
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fn reflect_kind(&self) -> ReflectKind

Returns a zero-sized enumeration of “kinds” of type. Read more
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Returns an immutable enumeration of “kinds” of type. Read more
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fn reflect_mut(&mut self) -> ReflectMut<'_>

Returns a mutable enumeration of “kinds” of type. Read more
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fn reflect_owned(self: Box<OrthographicProjection>) -> ReflectOwned

Returns an owned enumeration of “kinds” of type. Read more
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fn reflect_partial_eq(&self, value: &(dyn Reflect + 'static)) -> Option<bool>

Returns a “partial equality” comparison result. Read more
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fn apply(&mut self, value: &(dyn Reflect + 'static))

Applies a reflected value to this value. Read more
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Returns a hash of the value (which includes the type). Read more
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fn debug(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Debug formatter for the value. Read more
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fn serializable(&self) -> Option<Serializable<'_>>

Returns a serializable version of the value. Read more
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fn is_dynamic(&self) -> bool

Indicates whether or not this type is a dynamic type. Read more
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impl Struct for OrthographicProjection
where OrthographicProjection: Any + Send + Sync, f32: FromReflect + TypePath + RegisterForReflection, Vec2: FromReflect + TypePath + RegisterForReflection, ScalingMode: FromReflect + TypePath + RegisterForReflection, Rect: FromReflect + TypePath + RegisterForReflection,

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Returns a mutable reference to the value of the field named name as a &mut dyn Reflect.
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Returns a reference to the value of the field with index index as a &dyn Reflect.
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Returns a mutable reference to the value of the field with index index as a &mut dyn Reflect.
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Returns the name of the field with index index.
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Returns the number of fields in the struct.
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Returns an iterator over the values of the reflectable fields for this struct.
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fn clone_dynamic(&self) -> DynamicStruct

Clones the struct into a DynamicStruct.
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impl TypePath for OrthographicProjection

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Returns the fully qualified path of the underlying type. Read more
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Returns a short, pretty-print enabled path to the type. Read more
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Returns the name of the crate the type is in, or None if it is anonymous. Read more
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fn module_path() -> Option<&'static str>

Returns the path to the module the type is in, or None if it is anonymous. Read more
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impl Typed for OrthographicProjection
where OrthographicProjection: Any + Send + Sync, f32: FromReflect + TypePath + RegisterForReflection, Vec2: FromReflect + TypePath + RegisterForReflection, ScalingMode: FromReflect + TypePath + RegisterForReflection, Rect: FromReflect + TypePath + RegisterForReflection,

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fn type_info() -> &'static TypeInfo

Returns the compile-time info for the underlying type.

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