Function setFocalLength

setFocalLength(camera, focalLength, viewportHeight): number
Beta
Sets a camera's focal length.
Parameters
- camera: PerspectiveCamera
- focalLength: number
  
  Focal length in pixels. It must be larger than 0.
- viewportHeight: number
  
  Viewport height in pixels, used to compute vertical fov.
Returns number
The new camera's focal length in pixels.

Remarks
The camera's vertical fov will be updated to achieve the given viewport height.
- Defined in @xyzmaps/harp-mapview/lib/CameraUtils.ts:201

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