import * as THREE from 'three';
import * as d3 from 'd3';
import mapData from '@/assets/map/zigong2.json';

import textureMap from '@/assets/map/texture/map_texture.jpg';

// 地图深度
const MAP_DEPTH = 0.2;

const projection = d3.geoMercator().center([104.779307, 29.33924]).translate([0, 0, 0]);
export default class Map {
    constructor(experience) {
        this.experience = experience;
        this.scene = this.experience.scene;
        this.material = null;
        this.operationData(mapData);
    }
    operationData(jsondata) {
        const loader = new THREE.TextureLoader();
        loader.load(textureMap,
            (texture) => {
                this.material = new THREE.MeshBasicMaterial({
                    map: texture
                });

                this.map = new THREE.Object3D();
                // geo信息
                const features = jsondata.features;
                features.forEach((feature) => {
                    // 单个省份 对象
                    const province = new THREE.Object3D();
                    // 地址
                    province.properties = feature.properties.name;
                    // 多个情况
                    if (feature.geometry.type === "GeometryCollection") {
                        feature.geometry.geometries.forEach((coordinate) => {
                            coordinate.coordinates.forEach((rows) => {
                                const line = this.drawBoundary(rows);
                                const mesh = this.drawExtrudeMesh(rows);
                                province.add(line);
                                province.add(mesh);
                            });
                        });
                    }

                    // 单个情况
                    if (feature.geometry.type === "Polygon") {
                        feature.geometry.coordinates.forEach((coordinate) => {
                            const line = this.drawBoundary(coordinate);
                            const mesh = this.drawExtrudeMesh(coordinate);
                            province.add(line);
                            province.add(mesh);
                        });
                    }
                    this.map.add(province);
                    this.map.position.set(0.001, 0, 0.1);
                    this.map.rotation.set(THREE.MathUtils.degToRad(-90), 0, THREE.MathUtils.degToRad(20));
                });
                this.container = new THREE.Object3D();
                this.container.add(this.map);
                this.scene.add(this.container);
                console.log(this.container);
            }
        )
    }
    drawBoundary(polygon) {
        const points = [];
        for (let i = 0; i < polygon.length; i++) {
            const [x, y] = projection(polygon[i]);
            points.push(new THREE.Vector3(x, -y, 0));
        }
        const lineGeometry = new THREE.BufferGeometry().setFromPoints(points);
        const lineMaterial = new THREE.LineBasicMaterial({
            color: 'yellow'
        });
        const line = new THREE.Line(lineGeometry, lineMaterial);
        line.translateZ(MAP_DEPTH);
        return line;
    }

    drawExtrudeMesh(polygon) {
        const shape = new THREE.Shape();

        for (let i = 0; i < polygon.length; i++) {
            const [x, y] = projection(polygon[i]);

            if (i === 0) {
                shape.moveTo(x, -y);
            }

            shape.lineTo(x, -y);
        }

        const geometry = new THREE.ExtrudeGeometry(shape, {
            depth: MAP_DEPTH,
            bevelEnabled: false,
        });

        const material = new THREE.MeshBasicMaterial({
            color: '#525288',
            transparent: true,
            opacity: 1,
        })


        console.log(geometry);


        return new THREE.Mesh(geometry, this.material);
    }
}