import { OrbitControls } from "three/examples/jsm/controls/OrbitControls";
import { CSS2DRenderer,
CSS2DObject,} from "three/examples/jsm/renderers/CSS2DRenderer.js";
import * as d3 from 'd3';
const scene = new THREE.Scene();
const axesHelper = new THREE.AxesHelper(5);
scene.add(axesHelper);
const ambientLight = new THREE.AmbientLight(0xd4e7fd, 4);
scene.add(ambientLight);
const directionalLight = new THREE.DirectionalLight(0xe8eaeb, 0.2);
directionalLight.position.set(0, 10, 5);
const directionalLight2 = directionalLight.clone();
directionalLight2.position.set(0, 10, -5);
const directionalLight3 = directionalLight.clone();
directionalLight3.position.set(5, 10, 0);
const directionalLight4 = directionalLight.clone();
directionalLight4.position.set(-5, 10, 0);
scene.add(directionalLight);
scene.add(directionalLight2);
scene.add(directionalLight3);
scene.add(directionalLight4);
const camera = new THREE.PerspectiveCamera(
75,
window.innerWidth / window.innerHeight,
0.1,
1000
);
camera.position.y = 8;
camera.position.z = 8;
const labelRenderer = new CSS2DRenderer();
labelRenderer.domElement.style.position = "absolute";
labelRenderer.domElement.style.top = "0px";
labelRenderer.domElement.style.pointerEvents = "none";
labelRenderer.setSize(window.innerWidth, window.innerHeight);
document.getElementById("map").appendChild(labelRenderer.domElement);
const renderer = new THREE.WebGLRenderer({ alpha: true });
renderer.setSize(window.innerWidth, window.innerHeight);
document.getElementById("map").appendChild(renderer.domElement);
const controls = new OrbitControls(camera, renderer.domElement);
controls.update();
const animate = () => {
requestAnimationFrame(animate);
controls.update();
renderer.render(scene, camera);
labelRenderer.render(scene, camera);
};
animate();
window.addEventListener("resize", () => {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
labelRenderer.setSize(window.innerWidth, window.innerHeight);
});
// const url = "https://xtjj-1253239320.cos.ap-shanghai.myqcloud.com/330000_full.json";
// fetch(url)
// .then((res) => res.json())
// .then((data) => {
// });
import('./330000_full.json').then(data=>{
// import('./china.json').then(data=>{
const map = createMap(data);
scene.add(map);
let intersect = null;
window.addEventListener("pointerdown", (event) => {
const mouse = new THREE.Vector2();
mouse.x = (event.clientX / window.innerWidth) * 2 - 1;
mouse.y = -(event.clientY / window.innerHeight) * 2 + 1;
const raycaster = new THREE.Raycaster();
raycaster.setFromCamera(mouse, camera);
const intersects = raycaster
.intersectObjects(map.children)
.filter((item) => item.object.type !== "Line");
if (intersects.length > 0) {
if (intersects[0].object.type === "Mesh") {
if (intersect) isAplha(intersect, 1);
intersect = intersects[0].object.parent;
isAplha(intersect, 0.8);
}
if (intersects[0].object.type === "Sprite") {
console.log(intersects[0].object);
}
} else {
if (intersect) isAplha(intersect, 1);
}
function isAplha(intersect, opacity) {
intersect.children.forEach((item) => {
if (item.type === "Mesh") {
item.material.opacity = opacity;
item.position.z=opacity==1?0:0.5
// console.log(item.style);
}
});
}
});
})
const offsetXY = d3.geoMercator();
const createMap = (data) => {
const map = new THREE.Object3D();
const center = data.features[0].properties.centroid;
offsetXY.center(center).translate([0, 0]);
data.features.forEach((feature) => {
const unit = new THREE.Object3D();
const { centroid, center, name } = feature.properties;
const { coordinates, type } = feature.geometry;
const point = centroid || center || [0, 0];
// const color = new THREE.Color(`hsl(
// ${233},
// ${Math.random() * 30 + 55}%,
// ${Math.random() * 30 + 55}%)`).getHex();
const color = new THREE.Color(0x1e80ff)
// const depth = Math.random() * 0.3 + 0.3;
const depth = 0.6
const label = createLabel(name, point, depth);
const icon = createIcon(center, depth);
coordinates.forEach((coordinate) => {
if (type === "MultiPolygon") {
coordinate.forEach((item) => fn(item));
}
else if (type === "Polygon") {
fn(coordinate);
}
function fn(coordinate) {
unit.name = name;
const mesh = createMesh(coordinate, color, depth);
const line = createLine(coordinate, depth);
unit.add(mesh, ...line);
}
});
if(center){
map.add(unit, label, icon);
}else{
map.add(unit, label);
}
setCenter(map);
});
return map;
};
const createMesh = (data, color, depth) => {
const shape = new THREE.Shape();
data.forEach((item, idx) => {
const [x, y] = offsetXY(item);
if (idx === 0) shape.moveTo(x, -y);
else shape.lineTo(x, -y);
});
const extrudeSettings = {
depth: depth,
bevelEnabled: false,
};
const materialSettings = {
color: color,
emissive: 0x000000,
roughness: 0.45,
metalness: 0.8,
transparent: true,
side: THREE.DoubleSide,
};
const geometry = new THREE.ExtrudeGeometry(shape, extrudeSettings);
const material = new THREE.MeshStandardMaterial(materialSettings);
const mesh = new THREE.Mesh(geometry, material);
return mesh;
};
const createLine = (data, depth) => {
const points = [];
data.forEach((item) => {
const [x, y] = offsetXY(item);
points.push(new THREE.Vector3(x, -y, 0));
});
const lineGeometry = new THREE.BufferGeometry().setFromPoints(points);
const uplineMaterial = new THREE.LineBasicMaterial({ color: 0xffffff });
const downlineMaterial = new THREE.LineBasicMaterial({ color: 0xffffff });
const upLine = new THREE.Line(lineGeometry, uplineMaterial);
const downLine = new THREE.Line(lineGeometry, downlineMaterial);
downLine.position.z = -0.0001;
upLine.position.z = depth + 0.0001;
return [upLine, downLine];
};
const createLabel = (name, point, depth) => {
const div = document.createElement("div");
div.style.color = "#fff";
div.style.fontSize = "12px";
div.style.textShadow = "1px 1px 2px #047cd6";
div.textContent = name;
const label = new CSS2DObject(div);
label.scale.set(0.01, 0.01, 0.01);
const [x, y] = offsetXY(point);
label.position.set(x, -y, depth);
return label;
};
const createIcon = (point, depth) => {
if(!point){return}
const url ='https://lf3-cdn-tos.bytescm.com/obj/static/xitu_juejin_web/img/star.641eec7.png';
const map = new THREE.TextureLoader().load(url);
const material = new THREE.SpriteMaterial({
map: map,
transparent: true,
});
const sprite = new THREE.Sprite(material);
const [x, y] = offsetXY(point);
sprite.scale.set(0.3, 0.3, 0.3);
sprite.position.set(x, -y, depth + 0.2);
sprite.renderOrder = 1;
return sprite;
};
const setCenter = (map) => {
map.rotation.x = -Math.PI / 2;
const box = new THREE.Box3().setFromObject(map);
const center = box.getCenter(new THREE.Vector3());
const offset = [0, 0];
map.position.x = map.position.x - center.x - offset[0];
map.position.z = map.position.z - center.z - offset[1];
};