feat:鼠标移入效果

ZhangXianQiang

2024-04-18 496f3a16fa0fddd23af01fe6cb4d0709a6ebc8d9

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

@@ -4,7 +4,7 @@

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

import gsap from 'gsap';
// 地图深度
@@ -19,10 +19,11 @@
        this.experience = experience;
        this.scene = this.experience.scene;
        this.camera = this.experience.camera;
        this.material = null;
        this.provinceMeshList = [];
        this.textureLoader = new THREE.TextureLoader();
        this.setTexture();
        this.operationData(mapData);
        this.setLineHelper();
    }
    setTexture() {
        const textureMap = this.textureLoader.load(textureMapImage);
@@ -54,8 +55,8 @@
     * @param {*} jsondata 地图数据
     */
    operationData(jsondata) {
        this.map = new THREE.Group();

        this.map = new THREE.Object3D();
        // geo信息
        const features = jsondata.features;
        features.forEach((feature) => {
@@ -72,6 +73,7 @@
                        const mesh = this.drawExtrudeMesh(rows);
                        province.add(line);
                        province.add(mesh);
                        this.provinceMeshList.push(mesh);
                    });
                });
            }
@@ -83,18 +85,17 @@
                    const mesh = this.drawExtrudeMesh(coordinate);
                    province.add(line);
                    province.add(mesh);
                    this.provinceMeshList.push(mesh);
                });
            }
            // 合并成一个mesh
            // const mergedGeometry = BufferGeometryUtils.mergeGeometries(province.children);
            
            // 合并mesh
            // const mergedGeometry = mergeGeometries(province.children,true);
            province.isHover = false;
            this.map.add(province);
        });
        this.map.position.set(1, 1, -1.5);
        this.map.scale.set(10, 10, 10);
        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.map);
        console.log(this.map);
        this.setMouseEvent();
@@ -163,19 +164,22 @@
        // console.log(this);
        // return;
        if (this.map) {
            const mouse = new THREE.Vector2();
            mouse.x = (e.clientX / window.innerWidth) * 2 - 1;
            mouse.y = -(e.clientY / window.innerHeight) * 2 + 1;
            let mouse = new THREE.Vector2();
            let getBoundingClientRect = this.experience.canvas.getBoundingClientRect();
            let x = ((e.clientX - getBoundingClientRect.left) / getBoundingClientRect.width) * 2 - 1;
            let y = -((e.clientY - getBoundingClientRect.top) / getBoundingClientRect.height) * 2 + 1;
            mouse.x = x;
            mouse.y = y;

            raycaster.setFromCamera(mouse, this.camera.instance);
            const intersects = raycaster.intersectObjects(this.map.children, true);

            let intersects = raycaster.intersectObjects(this.provinceMeshList, false);

            if (intersects.length) {
                intersects.forEach((item) => {
                    if (item.object)
                        if (item.object.meshName === 'province') {
                            console.log(item.object);
                            this.animation(item.object);
                        }
                });
                let temp = intersects[0].object;
                this.animation(temp.parent);
            } else {
                this.animation();
            }
        }
    }
@@ -191,7 +195,69 @@
        };
    }

    animation(mesh) {
        console.log(mesh);
    animation(province) {
        if (province) {
            if (!province.isHover) {
                province.isHover = true;
                this.map.children.forEach((item) => {
                    if (item.properties === province.properties) {
                        gsap.to(province.position, {
                            z: 0.12,
                            duration: 0.6
                        })
                    } else {
                        this.resetAnimation(item);
                    }
                })
            }
        } else {
            this.resetAllAnimation();
        }

    }

    resetAnimation(province) {
        gsap.to(province.position, {
            z: 0,
            duration: 0.6,
            onComplete: () => {
                province.isHover = false;
            }
        })
    }

    resetAllAnimation() {
        this.map.children.forEach((item) => {
            this.resetAnimation(item);
        })
    }

    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);
    }

    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;
    }
}