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- import { ref } from 'vue';
- import _ from 'lodash';
- /**
- * svg二维模型动画使用的钩子,需要配合指定的组件使用,即svg模型组件(README里有更详细的说明)
- *
- * 备注:一个元素的动画仅有两种状态,正常播放、倒放;例如:`triggerAnimation(id1, false)`代表触发id1对应的动画,false代表触发正常播放的动画
- */
- export function useSvgAnimation(elementInfo: Map<string, { key: string; transforms?: string[]; opacity?: string[] }>) {
- /** 所有动画元素 */
- const animationElements = new Map<string, HTMLElement>();
- /** 管理节点是否处于初始状态 */
- const animationManager = ref<{ [id: string]: boolean }>({});
- /**
- * 触发动画函数,该函数用来根据id查找SVG图片中的对应group,然后触发绑定在此group上的动画
- *
- * 动画有且仅有两个状态,一种是初始状态,一种是结束状态,当动画触发后,会根据reverse传参自动切换状态
- *
- * @param id 标识符号(可以在页面中使用元素选择器选择具体元素后查询其id),可以传数组
- * @param reverse 是否需要反向执行动画,如果id传了数组该参数可以传数组以一一匹配,默认为false
- * @param config.duration 动画持续时长,越长动画执行的越慢
- * @param config.progress 指定动画执行的进度,默认为1,即动画执行到100%,该数字范围为0-1
- */
- function triggerAnimation(
- id: string | string[],
- reverse: boolean | boolean[] = false,
- config: {
- duration?: number;
- progress?: number;
- } = {}
- ) {
- const idArray = typeof id === 'string' ? [id] : id;
- const reverseArray = typeof reverse === 'boolean' ? idArray.map(() => reverse) : reverse;
- idArray.forEach((id, index) => {
- if (animationManager.value[id] === undefined) {
- animationManager.value[id] = true;
- }
- const unchanged = animationManager.value[id];
- const reverse = reverseArray[index] || false;
- // 不指定反向播放且group处于初始状态时播放正常动画
- if (!reverse && unchanged) {
- animationManager.value[id] = false;
- animateByKey(id, false, config);
- return;
- }
- if (reverse && !unchanged) {
- animationManager.value[id] = true;
- animateByKey(id, true, config);
- return;
- }
- });
- }
- // 直接控制动画的方法
- const animateElement = (
- elementId: string,
- reverse: boolean = false,
- config: {
- duration?: number;
- progress?: number;
- } = {}
- ) => {
- const { duration = 3000, progress = 1 } = config;
- const el = animationElements.get(elementId);
- const info = elementInfo.get(elementId);
- const percentage = _.clamp(progress, 0, 1);
- if (!el || !info) return;
- // 应用动画
- if (info.transforms && info.transforms.length > 1) {
- const endTransform = info.transforms[Math.floor((info.transforms.length - 1) * percentage)];
- const startTransform = info.transforms[Math.floor((info.transforms.length - 1) * (1 - percentage))];
- el.style.transition = `transform ${duration}ms`;
- el.setAttribute('transform', reverse ? startTransform : endTransform);
- }
- if (info.opacity && info.opacity.length > 1) {
- const endOpacity = info.opacity[Math.floor((info.opacity.length - 1) * percentage)];
- const startOpacity = info.opacity[Math.floor((info.opacity.length - 1) * (1 - percentage))];
- el.style.transition = `opacity ${duration}ms`;
- el.setAttribute('opacity', reverse ? startOpacity : endOpacity);
- }
- };
- // 批量控制同一key的所有元素
- const animateByKey = (
- key: string,
- reverse: boolean = false,
- config: {
- duration?: number;
- progress?: number;
- } = {}
- ) => {
- animationElements.forEach((__, elementId) => {
- const info = elementInfo.get(elementId);
- if (info && info.key === key) {
- animateElement(elementId, reverse, config);
- }
- });
- };
- return {
- animationElements,
- triggerAnimation,
- animateElement,
- animateByKey,
- };
- }
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