<template> <span class="mk-sparkle"> <span ref="el"> <slot></slot> </span> <!-- なぜか path に対する key が機能しないため <svg :width="width" :height="height" :viewBox="`0 0 ${width} ${height}`" xmlns="http://www.w3.org/2000/svg"> <path v-for="particle in particles" :key="particle.id" style="transform-origin: center; transform-box: fill-box;" :transform="`translate(${particle.x} ${particle.y})`" :fill="particle.color" d="M29.427,2.011C29.721,0.83 30.782,0 32,0C33.218,0 34.279,0.83 34.573,2.011L39.455,21.646C39.629,22.347 39.991,22.987 40.502,23.498C41.013,24.009 41.653,24.371 42.354,24.545L61.989,29.427C63.17,29.721 64,30.782 64,32C64,33.218 63.17,34.279 61.989,34.573L42.354,39.455C41.653,39.629 41.013,39.991 40.502,40.502C39.991,41.013 39.629,41.653 39.455,42.354L34.573,61.989C34.279,63.17 33.218,64 32,64C30.782,64 29.721,63.17 29.427,61.989L24.545,42.354C24.371,41.653 24.009,41.013 23.498,40.502C22.987,39.991 22.347,39.629 21.646,39.455L2.011,34.573C0.83,34.279 0,33.218 0,32C0,30.782 0.83,29.721 2.011,29.427L21.646,24.545C22.347,24.371 22.987,24.009 23.498,23.498C24.009,22.987 24.371,22.347 24.545,21.646L29.427,2.011Z" > <animateTransform attributeName="transform" attributeType="XML" type="rotate" from="0 0 0" to="360 0 0" :dur="`${particle.dur}ms`" repeatCount="indefinite" additive="sum" /> <animateTransform attributeName="transform" attributeType="XML" type="scale" :values="`0; ${particle.size}; 0`" :dur="`${particle.dur}ms`" repeatCount="indefinite" additive="sum" /> </path> </svg> --> <svg v-for="particle in particles" :key="particle.id" :width="width" :height="height" :viewBox="`0 0 ${width} ${height}`" xmlns="http://www.w3.org/2000/svg"> <path style="transform-origin: center; transform-box: fill-box;" :transform="`translate(${particle.x} ${particle.y})`" :fill="particle.color" d="M29.427,2.011C29.721,0.83 30.782,0 32,0C33.218,0 34.279,0.83 34.573,2.011L39.455,21.646C39.629,22.347 39.991,22.987 40.502,23.498C41.013,24.009 41.653,24.371 42.354,24.545L61.989,29.427C63.17,29.721 64,30.782 64,32C64,33.218 63.17,34.279 61.989,34.573L42.354,39.455C41.653,39.629 41.013,39.991 40.502,40.502C39.991,41.013 39.629,41.653 39.455,42.354L34.573,61.989C34.279,63.17 33.218,64 32,64C30.782,64 29.721,63.17 29.427,61.989L24.545,42.354C24.371,41.653 24.009,41.013 23.498,40.502C22.987,39.991 22.347,39.629 21.646,39.455L2.011,34.573C0.83,34.279 0,33.218 0,32C0,30.782 0.83,29.721 2.011,29.427L21.646,24.545C22.347,24.371 22.987,24.009 23.498,23.498C24.009,22.987 24.371,22.347 24.545,21.646L29.427,2.011Z" > <animateTransform attributeName="transform" attributeType="XML" type="rotate" from="0 0 0" to="360 0 0" :dur="`${particle.dur}ms`" repeatCount="1" additive="sum" /> <animateTransform attributeName="transform" attributeType="XML" type="scale" :values="`0; ${particle.size}; 0`" :dur="`${particle.dur}ms`" repeatCount="1" additive="sum" /> </path> </svg> </span> </template> <script lang="ts" setup> import { onMounted, onUnmounted, ref } from 'vue'; import { reducedMotion } from '@/scripts/reduced-motion'; const particles = ref([]); const el = ref<HTMLElement>(); const width = ref(0); const height = ref(0); const colors = ['#eb6f92', '#9ccfd8', '#f6c177', '#f6c177', '#f6c177']; let stop = false; let ro: ResizeObserver | undefined; onMounted(() => { if (!reducedMotion()) { ro = new ResizeObserver((entries, observer) => { width.value = el.value?.offsetWidth + 64; height.value = el.value?.offsetHeight + 64; }); ro.observe(el.value); const add = () => { if (stop) return; const x = (Math.random() * (width.value - 64)); const y = (Math.random() * (height.value - 64)); const sizeFactor = Math.random(); const particle = { id: Math.random().toString(), x, y, size: 0.2 + ((sizeFactor / 10) * 3), dur: 1000 + (sizeFactor * 1000), color: colors[Math.floor(Math.random() * colors.length)], }; particles.value.push(particle); window.setTimeout(() => { particles.value = particles.value.filter(x => x.id !== particle.id); }, particle.dur - 100); window.setTimeout(() => { add(); }, 500 + (Math.random() * 500)); }; add(); } }); onUnmounted(() => { if (ro) ro.disconnect(); stop = true; }); </script> <style lang="scss" scoped> .mk-sparkle { position: relative; display: inline-block; > span { display: inline-block; } > svg { position: absolute; top: -32px; left: -32px; pointer-events: none; } } </style>