import { MathUtils } from 'three';
import { PerspectiveCamera, CameraHelper } from 'three';
import { OrbitControls } from 'three/examples/jsm/controls/OrbitControls';


export default class Camera {
    constructor(experience) {
        this.experience = experience;
        this.scene = experience.scene;
        this.canvas = experience.canvas;
        this.sizes = experience.sizes;
        this.setInstance();
        this.setOrbitControls();
    }

    // 设置透视相机
    setInstance() {
        this.instance = new PerspectiveCamera(45, this.sizes.width / this.sizes.height, 0.1, 200);
        this.instance.position.set(0,30,25);
        this.scene.add(this.instance);
        this.instance.position.z = 10;
        this.instance.position.x = 0;
        // const help = new CameraHelper(this.instance);
        // this.scene.add(help);
    }

    setOrbitControls() {
        this.controls = new OrbitControls(this.instance, this.canvas);
        this.controls.target.set(0, 0, 1);
        this.controls.enableDamping = true;
        this.controls.minDistance = 20;
        this.controls.maxDistance = 80;
        this.controls.maxPolarAngle = MathUtils.degToRad(80);
        // this.controls.maxPolarAngle = (-Math.PI / 2);
    }

    resize() {
        // 重新计算比例
        this.cameraAspect = this.sizes.width / this.sizes.height;
        this.instance.updateProjectionMatrix();
    }


    update() {
        this.controls.update();
    }

    destroy() {
        this.disposeObject();
        this.removeObject();
        this.resetObject();
    }

    disposeObject() {
        this.controls.dispose();
    }

    removeObject() {
        this.scene.remove(this.instance);
    }
    resetObject() {
        this.controls = null;
        this.instance = null;
        this.scene = null;
        this.canvas = null;
        this.sizes = null;
    }
}