Struct bevy::render::camera::Camera

pub struct Camera {
    pub viewport: Option<Viewport>,
    pub order: isize,
    pub is_active: bool,
    pub computed: ComputedCameraValues,
    pub target: RenderTarget,
    pub hdr: bool,
    pub output_mode: CameraOutputMode,
    pub msaa_writeback: bool,
}

Expand description

The defining Component for camera entities, storing information about how and what to render through this camera.

The Camera component is added to an entity to define the properties of the viewpoint from which rendering occurs. It defines the position of the view to render, the projection method to transform the 3D objects into a 2D image, as well as the render target into which that image is produced.

Adding a camera is typically done by adding a bundle, either the Camera2dBundle or the Camera3dBundle.

Fields§

§viewport: Option<Viewport>

If set, this camera will render to the given Viewport rectangle within the configured RenderTarget.

§order: isize

Cameras with a higher order are rendered later, and thus on top of lower order cameras.

§is_active: bool

If this is set to true, this camera will be rendered to its specified RenderTarget. If false, this camera will not be rendered.

§computed: ComputedCameraValues

Computed values for this camera, such as the projection matrix and the render target size.

§target: RenderTarget

The “target” that this camera will render to.

§hdr: bool

If this is set to true, the camera will use an intermediate “high dynamic range” render texture. This allows rendering with a wider range of lighting values.

§output_mode: CameraOutputMode

The CameraOutputMode for this camera.

§msaa_writeback: bool

If this is enabled, a previous camera exists that shares this camera’s render target, and this camera has MSAA enabled, then the previous camera’s outputs will be written to the intermediate multi-sampled render target textures for this camera. This enables cameras with MSAA enabled to “write their results on top” of previous camera results, and include them as a part of their render results. This is enabled by default to ensure cameras with MSAA enabled layer their results in the same way as cameras without MSAA enabled by default.

Implementations§

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impl Camera

pub fn to_logical(&self, physical_size: UVec2) -> Option<Vec2>

Converts a physical size in this Camera to a logical size.

pub fn physical_viewport_rect(&self) -> Option<(UVec2, UVec2)>

The rendered physical bounds (minimum, maximum) of the camera. If the viewport field is set to Some, this will be the rect of that custom viewport. Otherwise it will default to the full physical rect of the current RenderTarget.

pub fn logical_viewport_rect(&self) -> Option<Rect>

The rendered logical bounds Rect of the camera. If the viewport field is set to Some, this will be the rect of that custom viewport. Otherwise it will default to the full logical rect of the current RenderTarget.

pub fn logical_viewport_size(&self) -> Option<Vec2>

The logical size of this camera’s viewport. If the viewport field is set to Some, this will be the size of that custom viewport. Otherwise it will default to the full logical size of the current RenderTarget. For logic that requires the full logical size of the RenderTarget, prefer Camera::logical_target_size.

pub fn physical_viewport_size(&self) -> Option<UVec2>

The physical size of this camera’s viewport. If the viewport field is set to Some, this will be the size of that custom viewport. Otherwise it will default to the full physical size of the current RenderTarget. For logic that requires the full physical size of the RenderTarget, prefer Camera::physical_target_size.

pub fn logical_target_size(&self) -> Option<Vec2>

The full logical size of this camera’s RenderTarget, ignoring custom viewport configuration. Note that if the viewport field is Some, this will not represent the size of the rendered area. For logic that requires the size of the actually rendered area, prefer Camera::logical_viewport_size.

pub fn physical_target_size(&self) -> Option<UVec2>

The full physical size of this camera’s RenderTarget, ignoring custom viewport configuration. Note that if the viewport field is Some, this will not represent the size of the rendered area. For logic that requires the size of the actually rendered area, prefer Camera::physical_viewport_size.

pub fn projection_matrix(&self) -> Mat4

The projection matrix computed using this camera’s CameraProjection.

pub fn world_to_viewport( &self, camera_transform: &GlobalTransform, world_position: Vec3 ) -> Option<Vec2>

Given a position in world space, use the camera to compute the viewport-space coordinates.

To get the coordinates in Normalized Device Coordinates, you should use world_to_ndc.

pub fn viewport_to_world( &self, camera_transform: &GlobalTransform, viewport_position: Vec2 ) -> Option<Ray>

Returns a ray originating from the camera, that passes through everything beyond viewport_position.

The resulting ray starts on the near plane of the camera.

If the camera’s projection is orthographic the direction of the ray is always equal to camera_transform.forward().

To get the world space coordinates with Normalized Device Coordinates, you should use ndc_to_world.

pub fn viewport_to_world_2d( &self, camera_transform: &GlobalTransform, viewport_position: Vec2 ) -> Option<Vec2>

Returns a 2D world position computed from a position on this Camera’s viewport.

Useful for 2D cameras and other cameras with an orthographic projection pointing along the Z axis.

To get the world space coordinates with Normalized Device Coordinates, you should use ndc_to_world.

pub fn world_to_ndc( &self, camera_transform: &GlobalTransform, world_position: Vec3 ) -> Option<Vec3>

Given a position in world space, use the camera’s viewport to compute the Normalized Device Coordinates.

When the position is within the viewport the values returned will be between -1.0 and 1.0 on the X and Y axes, and between 0.0 and 1.0 on the Z axis. To get the coordinates in the render target’s viewport dimensions, you should use world_to_viewport.

pub fn ndc_to_world( &self, camera_transform: &GlobalTransform, ndc: Vec3 ) -> Option<Vec3>

Given a position in Normalized Device Coordinates, use the camera’s viewport to compute the world space position.

When the position is within the viewport the values returned will be between -1.0 and 1.0 on the X and Y axes, and between 0.0 and 1.0 on the Z axis. To get the world space coordinates with the viewport position, you should use world_to_viewport.