Runtime.Graphics.Scene.Camera (Visera.Runtime.Graphics.Scene.Camera)¶

Scene camera: left-handed coordinate system, view/projection matrices and parameters. Used for viewport rendering and culling.

FCamera¶

Left-handed scene camera. Supports perspective and orthographic projection. View, Projection, and ViewProjection matrices are lazily updated via dirty flags when position/rotation or projection parameters change.

Projection type¶

Enum	Description
`EProjectionType::Perspective`	Perspective (FOV, aspect, near/far).
`EProjectionType::Orthographic`	Orthographic (width, height, near/far).
`EProjectionType::Default`	Same as Perspective.

Factory methods¶

FCamera::MakePerspective(I_FOVY, I_AspectRatio, I_NearPlane, I_FarPlane)
Creates a perspective camera. I_FOVY: vertical FOV (degrees); I_AspectRatio: width/height; I_NearPlane / I_FarPlane: clip distances.
FCamera::MakeOrthographic(I_Width, I_Height, I_NearPlane, I_FarPlane)
Creates an orthographic camera. I_Width / I_Height: viewport size; near/far: clip distances.

Transform (position and rotation)¶

API	Description
`GetPosition()` / `SetPosition(I_Position)`	World-space position. SetPosition marks view (and view-proj) dirty.
`GetRotation()` / `SetRotation(I_Rotation)`	Orientation as quaternion. SetRotation marks view (and view-proj) dirty.
`SetEulerAngles(I_Yaw, I_Pitch, I_Roll)`	Set rotation from Euler angles (Yaw–Pitch–Roll; order Y×X×Z). Marks view dirty.
`GetEulerAngles()`	Returns `TTuple<FDegree, FDegree, FDegree>` (Yaw, Pitch, Roll); handles gimbal lock.

Projection parameters¶

API	Description
`GetProjectionType()`	Current projection type (perspective or orthographic).
`GetFOVY()`	Vertical FOV (perspective only).
`GetAspectRatio()`	Width/height.
`GetNearPlane()` / `GetFarPlane()`	Clip plane distances.
`GetOrthoWidth()` / `GetOrthoHeight()`	Orthographic viewport size (ortho only).

Setters that change projection¶

SetPerspective(I_FOVY, I_AspectRatio, I_NearPlane, I_FarPlane)
Switch to perspective and set parameters. Marks projection (and view-proj) dirty.
SetOrthographic(I_Width, I_Height, I_NearPlane, I_FarPlane)
Switch to orthographic and set parameters. Marks projection (and view-proj) dirty.

Matrix access¶

View and projection matrices are recomputed only when dirty; getters return const references.

API	Description
`GetViewMatrix()`	View matrix (left-handed; Right/Up/Forward rows, translation in fourth column).
`GetProjectionMatrix()`	Projection matrix (perspective or ortho; left-handed NDC).
`GetViewProjectionMatrix()`	View × Projection; updated when either view or projection is dirty.