import { Camera } from "../../Cameras/camera";
import { ArcRotateCamera } from "../../Cameras/arcRotateCamera";
import { VRCameraMetrics } from "./vrCameraMetrics";
import { Scene } from "../../scene";
import { Vector3 } from "../../Maths/math";
import { Node } from "../../node";

Node.AddNodeConstructor("VRDeviceOrientationFreeCamera", (name, scene) => {
    return () => new VRDeviceOrientationArcRotateCamera(name, 0, 0, 1.0, Vector3.Zero(), scene);
});

/**
 * Camera used to simulate VR rendering (based on ArcRotateCamera)
 * @see http://doc.babylonjs.com/babylon101/cameras#vr-device-orientation-cameras
 */
export class VRDeviceOrientationArcRotateCamera extends ArcRotateCamera {

    /**
     * Creates a new VRDeviceOrientationArcRotateCamera
     * @param name defines camera name
     * @param alpha defines the camera rotation along the logitudinal axis
     * @param beta defines the camera rotation along the latitudinal axis
     * @param radius defines the camera distance from its target
     * @param target defines the camera target
     * @param scene defines the scene the camera belongs to
     * @param compensateDistortion defines if the camera needs to compensate the lens distorsion
     * @param vrCameraMetrics defines the vr metrics associated to the camera
     */
    constructor(name: string, alpha: number, beta: number, radius: number, target: Vector3, scene: Scene, compensateDistortion = true, vrCameraMetrics: VRCameraMetrics = VRCameraMetrics.GetDefault()) {
        super(name, alpha, beta, radius, target, scene);

        vrCameraMetrics.compensateDistortion = compensateDistortion;
        this.setCameraRigMode(Camera.RIG_MODE_VR, { vrCameraMetrics: vrCameraMetrics });

        this.inputs.addVRDeviceOrientation();
    }

    /**
     * Gets camera class name
     * @returns VRDeviceOrientationArcRotateCamera
     */
    public getClassName(): string {
        return "VRDeviceOrientationArcRotateCamera";
    }
}