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Enumeration: FovMode

Determines how the camera's field of view (FOV) is calculated relative to the viewport.

The FovMode enum defines whether the camera's field of view is constrained by the vertical or horizontal dimensions of the viewport. This affects how the scene is framed and how perspective changes when viewport dimensions change.

Example​

// Creating a camera with vertical FOV mode
const camera = new ArcRotateCamera("camera", 0, 0, 10, Vector3.Zero(), scene);
camera.fovMode = FovMode.VERTICAL;
camera.fov = Math.PI/4; // 45 degrees vertical FOV

// Switching to horizontal FOV mode for landscape views
if (isLandscapeOrientation) {
  camera.fovMode = FovMode.HORIZONTAL;
}

Enumeration Members​

HORIZONTAL​

HORIZONTAL: 1

Horizontal FOV mode aligns the left and right bounds of the viewport to the left and right bounds of the camera frustum.

This mode is useful for panoramic views or when consistent horizontal framing is more important than vertical framing.

VERTICAL​

VERTICAL: 0

Vertical FOV mode aligns the upper and lower bounds of the viewport to the upper and lower bounds of the camera frustum.

This is the default mode for perspective cameras and is ideal for maintaining consistent vertical framing when the viewport width changes.