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| import * as THREE from "three";
import SpriteText from "../SpriteText.js";
import gsap from "gsap";
let dataExamples = [
{
value: 3.5,
name: "第一季度",
},
{
value: 2.7,
name: "第二季度",
},
{
value: 3.0,
name: "第三季度",
},
{
value: 2.5,
name: "第四季度",
},
];
export default class Pie3d {
constructor(data, camera) {
data = data || dataExamples;
this.mesh = new THREE.Group();
this.sum = 0;
data.forEach((item, i) => {
this.sum += item.value;
});
let sumRotation = 0;
data.forEach((item, i) => {
let rotation = (item.value / this.sum) * 2 * Math.PI;
let color = new THREE.Color(Math.random() * 0xffffff);
const material = new THREE.MeshStandardMaterial({
color: color,
side: THREE.DoubleSide,
opacity: 0.8,
transparent: true,
});
const shape = new THREE.Shape();
shape.moveTo(0, 0);
let rad = 0;
while (rad < rotation) {
shape.lineTo(3 * Math.cos(rad), 3 * Math.sin(rad));
rad += 0.05;
}
shape.lineTo(3 * Math.cos(rotation), 3 * Math.sin(rotation));
shape.lineTo(0, 0);
const extrudeSettings = {
steps: 1,
depth: (item.value / this.sum) * 5,
bevelEnabled: false,
bevelThickness: 1,
bevelSize: 1,
bevelOffset: 0,
bevelSegments: 5,
};
const geometry = new THREE.ExtrudeGeometry(shape, extrudeSettings);
const cylinder = new THREE.Mesh(geometry, material);
cylinder.rotation.z = sumRotation;
this.mesh.add(cylinder);
let textPosition = new THREE.Vector3(
Math.sin(rotation) * 1.5,
Math.cos(rotation) * 1.5,
item.value / 2 + 0.5
);
let spriteText = new SpriteText(item.name, textPosition);
cylinder.add(spriteText.mesh);
sumRotation += rotation;
});
this.mesh.rotation.x = -Math.PI / 2;
this.addMouseMove();
this.camera = camera;
}
addMouseMove() {
this.raycaster = new THREE.Raycaster();
this.pointer = new THREE.Vector2(1, 1);
this.timeline = gsap.timeline();
this.currentPie = null;
window.addEventListener("mousemove", (e) => {
this.pointer.x = (e.clientX / window.innerWidth) * 2 - 1;
this.pointer.y =
-(e.clientY / (1080 * (window.innerWidth / 1920))) * 2 + 1;
});
}
update() {
this.raycaster.setFromCamera(this.pointer, this.camera);
const intersects = this.raycaster.intersectObjects(
this.mesh.children,
false
);
if (
intersects.length > 0 &&
this.currentPie == null &&
!this.timeline.isActive()
) {
this.currentPie = intersects[0].object;
this.timeline.to(this.currentPie.position, {
x: 1 * Math.cos(this.currentPie.rotation.z),
y: 1 * Math.sin(this.currentPie.rotation.z),
duration: 0.5,
});
}
if (
intersects.length > 0 &&
this.currentPie != null &&
this.currentPie != intersects[0].object &&
!this.timeline.isActive()
) {
this.timeline.to(this.currentPie.position, {
x: 0,
y: 0,
duration: 0.1,
});
this.currentPie = intersects[0].object;
this.timeline.to(this.currentPie.position, {
x: 1 * Math.cos(this.currentPie.rotation.z),
y: 1 * Math.sin(this.currentPie.rotation.z),
duration: 0.5,
});
}
if (
intersects.length == 0 &&
this.currentPie &&
!this.timeline.isActive()
) {
this.timeline.to(this.currentPie.position, {
x: 0,
y: 0,
duration: 0.5,
onComplete: () => {
console.log("complete");
this.currentPie = null;
},
});
}
}
}
|
