样式调整

黄何裕

2024-07-16 bfb10b42c5fb6bc9f751f88f9351bfc19c6380a4

 src/views/screen/components/screen-map-three/experience/world/map.js

@@ -1,12 +1,13 @@
import * as THREE from 'three';
import * as d3 from 'd3';
import mapData from '@/assets/map/zigong2.json';
import { CSS2DObject } from 'three/examples/jsm/renderers/CSS2DRenderer';

import textureMapImage from '@/assets/map/texture/gz-map.jpg';
import textureMapFxImage from '@/assets/map/texture/gz-map-fx.jpg';
import { mergeGeometries } from 'three/examples/jsm/utils/BufferGeometryUtils.js';

import gsap from 'gsap';

// 地图深度
const MAP_DEPTH = 0.2;

@@ -17,13 +18,17 @@
export default class Map {
    constructor(experience) {
        this.experience = experience;
        this.scene = this.experience.scene;
        this.camera = this.experience.camera;
        this.scene = experience.scene;
        this.camera = experience.camera;

        this.provinceMeshList = [];
        this.labelList = [];
        this.textureLoader = new THREE.TextureLoader();
        this.setTexture();
        this.operationData(mapData);
        this.setLineHelper();
        setTimeout(() => {
            this.enterAnimation();
        }, 500);
    }
    setTexture() {
        const textureMap = this.textureLoader.load(textureMapImage);
@@ -64,6 +69,7 @@
            const province = new THREE.Object3D();
            // 地址
            province.properties = feature.properties.name;
            province.isHover = false;
            // 多个情况
            // console.log(feature.geometry.type);
            if (feature.geometry.type === "MultiPolygon") {
@@ -88,16 +94,16 @@
                    this.provinceMeshList.push(mesh);
                });
            }
            // 合并mesh
            // const mergedGeometry = mergeGeometries(province.children,true);
            province.isHover = false;
            const label = this.drawLabelText(feature);
            this.labelList.push({ name: feature.properties.name, label });
            province.add(label);
            this.map.add(province);
        });
        this.map.position.set(1, 1, -1.5);
        this.map.scale.set(10, 10, 10);
        this.map.scale.set(10, 10, 1);
        this.map.rotation.set(THREE.MathUtils.degToRad(-90), 0, THREE.MathUtils.degToRad(20));
        this.scene.add(this.map);
        console.log(this.map);

        this.setMouseEvent();
    }

@@ -149,10 +155,25 @@
        ]);
    }

    drawLabelText(province) {
        const [x, y] = projection(province.properties.center);
        const div = document.createElement('div');
        div.innerHTML = province.properties.name;
        div.style.padding = '4px 10px';
        div.style.color = '#fff';
        div.style.fontSize = '16px';
        div.style.position = 'absolute';
        div.style.backgroundColor = 'rgba(25,25,25,0.5)';
        div.style.borderRadius = '5px';
        const label = new CSS2DObject(div);
        div.style.pointerEvents = 'none';
        label.position.set(x, y, MAP_DEPTH + 0.05);
        return label;
    }


    setMouseEvent() {
        this.mouseEvent = this.handleEvent.bind(this);
        // this.experience.canvas.addEventListener("mousemove", this.throttle(this.mouseEvent,100));
        this.experience.canvas.addEventListener("mousemove", this.mouseEvent);
    }

@@ -178,6 +199,7 @@
            if (intersects.length) {
                let temp = intersects[0].object;
                this.animation(temp.parent);
                this.showLabel(temp.parent);
            } else {
                this.animation();
            }
@@ -232,32 +254,62 @@
        })
    }

    setLineHelper() {
        const material = new THREE.LineBasicMaterial({
            color: 0x0000ff
        });

        const points = [];
        points.push(new THREE.Vector3(0, 0, 0));
        points.push(new THREE.Vector3(0, 0, 0));

        const geometry = new THREE.BufferGeometry().setFromPoints(points);

        this.lineHelper = new THREE.Line(geometry, material);
        console.log(this.lineHelper);
        this.scene.add(this.lineHelper);
    showLabel(province) {
        this.labelList.forEach((item) => {
            // if (item.name === province.properties) {
            //     item.label.element.style.visibility = 'visible';
            // } else {
            //     item.label.element.style.visibility = 'hidden';
            // }
        })
    }

    updateLine(raycaster) {
        let pointArray = new Float32Array([
            raycaster.ray.origin.x,
            raycaster.ray.origin.y,
            raycaster.ray.origin.z,
            raycaster.ray.direction.x,
            raycaster.ray.direction.y,
            raycaster.ray.direction.z,
        ])
        this.lineHelper.geometry.attributes.position.array = pointArray;
        this.lineHelper.geometry.attributes.position.needsUpdate = true;
    enterAnimation() {
        gsap.to(this.map.scale, {
            z: 10,
            duration: 0.6,
            ease: 'power1.out'
        })
    }

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

    disposeObject() {
        this.map.traverse((child) => {
            if (child.material) {
                // 可能存在材质为数组的情况
                if (child.material instanceof Array) {
                    child.material.forEach((item) => item.dispose());
                } else {
                    child.material.dispose();
                    if (child.material.map) {
                        child.material.map.dispose();
                    }
                }
            }
            if (child.geometry) {
                child.geometry.dispose();
                child.geometry.attributes = null; // 这些属性包括position, normal, uv等等
            }
            child = null;
        });
        this.topFaceMaterial.dispose();
        this.sideMaterial.dispose();
    }

    removeObject() {
        this.scene.remove(this.map);
    }

    resetObject() {
        this.map = null;
        this.provinceMeshList = null;
        this.labelList = null;
        this.textureLoader = null;
    }
}