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<script>
import { onMount } from "svelte"
export let size = 10
export let x = [-0.5, 0.5]
export let y = [0.25, 1]
export let duration = 2000
export let infinite = false
export let delay = [0, 50]
export let colorRange = [0, 360]
export let colorArray = []
export let amount = 50
export let iterationCount = 1
export let fallDistance = "100px"
export let rounded = false
export let cone = false
export let noGravity = false
export let xSpread = 0.15
export let destroyOnComplete = true
let complete = false
onMount(() => {
if (!destroyOnComplete || infinite || iterationCount == "infinite") return
setTimeout(() => complete = true, (duration + delay[1]) * iterationCount)
})
function randomBetween(min, max) {
return Math.random() * (max - min) + min
}
function getColor() {
if (colorArray.length) return colorArray[Math.round(Math.random() * (colorArray.length - 1))]
else return `hsl(${Math.round(randomBetween(colorRange[0], colorRange[1]))}, 75%, 50%)`
}
</script>
{#if !complete}
<div class="confetti-holder" class:rounded class:cone class:no-gravity={noGravity}>
{#each { length: amount } as _}
<div
class="confetti"
style="
--fall-distance: {fallDistance};
--size: {size}px;
--color: {getColor()};
--skew: {randomBetween(-45, 45)}deg,{randomBetween(-45, 45)}deg;
--rotation-xyz: {randomBetween(-10, 10)}, {randomBetween(-10, 10)}, {randomBetween(-10, 10)};
--rotation-deg: {randomBetween(0, 360)}deg;
--translate-y-multiplier: {randomBetween(y[0], y[1])};
--translate-x-multiplier: {randomBetween(x[0], x[1])};
--scale: {0.1 * randomBetween(2, 10)};
--transition-duration: {infinite ? `calc(${duration}ms * var(--scale))` : `${duration}ms`};
--transition-delay: {randomBetween(delay[0], delay[1])}ms;
--transition-iteration-count: {infinite ? 'infinite' : iterationCount};
--x-spread: {(1 - xSpread)}" />
{/each}
</div>
{/if}
<style>
.confetti-holder {
position: relative;
}
@keyframes rotate {
0% {
transform: skew(var(--skew)) rotate3d(var(--full-rotation));
}
100% {
transform: skew(var(--skew)) rotate3d(var(--rotation-xyz), calc(var(--rotation-deg) + 360deg));
}
}
@keyframes translate {
0% {
opacity: 1;
}
8% {
transform: translateY(calc(var(--translate-y) * 0.95)) translateX(calc(var(--translate-x) * (var(--x-spread) * 0.9)));
opacity: 1;
}
12% {
transform: translateY(var(--translate-y)) translateX(calc(var(--translate-x) * (var(--x-spread) * 0.95)));
opacity: 1;
}
16% {
transform: translateY(var(--translate-y)) translateX(calc(var(--translate-x) * var(--x-spread)));
opacity: 1;
}
100% {
transform: translateY(calc(var(--translate-y) + var(--fall-distance))) translateX(var(--translate-x));
opacity: 0;
}
}
@keyframes no-gravity-translate {
0% {
opacity: 1;
}
100% {
transform: translateY(var(--translate-y)) translateX(var(--translate-x));
opacity: 0;
}
}
.confetti {
--translate-y: calc(-200px * var(--translate-y-multiplier));
--translate-x: calc(200px * var(--translate-x-multiplier));
position: absolute;
height: calc(var(--size) * var(--scale));
width: calc(var(--size) * var(--scale));
animation: translate var(--transition-duration) var(--transition-delay) var(--transition-iteration-count) linear;
opacity: 0;
pointer-events: none;
}
.confetti::before {
--full-rotation: var(--rotation-xyz), var(--rotation-deg);
content: '';
display: block;
width: 100%;
height: 100%;
background: var(--color);
background-size: contain;
transform: skew(var(--skew)) rotate3d(var(--full-rotation));
animation: rotate var(--transition-duration) var(--transition-delay) var(--transition-iteration-count) linear;
}
.rounded .confetti::before {
border-radius: 50%;
}
.cone .confetti {
--translate-x: calc(200px * var(--translate-y-multiplier) * var(--translate-x-multiplier));
}
.no-gravity .confetti {
animation-name: no-gravity-translate;
animation-timing-function: ease-out;
}
@media (prefers-reduced-motion) {
.confetti,
.confetti::before {
animation: none;
}
}
</style>
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