This class is an alternative implementation of [page:FlyControls].
[example:webgl_geometry_terrain webgl / geometry / terrain ]
[page:Camera object]: The camera to be controlled.
[page:HTMLDOMElement domElement]: The HTML element used for event listeners.
Creates a new instance of [name].
Whether or not it's possible to look around. Default is `true`.
Whether or not the camera is automatically moved forward. Default is `false`.
Whether or not looking around is vertically constrained by [[page:.verticalMin], [page:.verticalMax]]. Default is `false`.
The HTMLDOMElement used to listen for mouse / touch events. This must be passed in the constructor; changing it here will not set up new event listeners.
Whether or not the controls are enabled. Default is `true`.
Determines how much faster the camera moves when it's y-component is near [page:.heightMax]. Default is *1*.
Upper camera height limit used for movement speed adjustment. Default is *1*.
Lower camera height limit used for movement speed adjustment. Default is *0*.
Whether or not the camera's height influences the forward movement speed. Default is `false`. Use the properties [page:.heightCoef], [page:.heightMin] and [page:.heightMax] for configuration.
Whether or not it's possible to vertically look around. Default is `true`.
The look around speed. Default is `0.005`.
Whether or not the mouse is pressed down. Read-only property.
The movement speed. Default is *1*.
The camera to be controlled.
How far you can vertically look around, upper limit. Range is 0 to Math.PI radians. Default is `Math.PI`.
How far you can vertically look around, lower limit. Range is 0 to Math.PI radians. Default is *0*.
Should be called if the controls is no longer required.
Should be called if the application window is resized.
vector - A vector representing the target position.
Optionally, the x, y, z components of the world space position.
Ensures the controls orient the camera towards the defined target position.
[page:Number delta]: Time delta value.
Updates the controls. Usually called in the animation loop.
[link:https://github.com/mrdoob/three.js/blob/master/examples/jsm/controls/FirstPersonControls.js examples/jsm/controls/FirstPersonControls.js]