Drag Lock Direction

<script setup lang="tsx">
/** @jsxImportSource vue */
import { motion } from 'motion-v'
import { ref } from 'vue'

const activeDirection = ref<'x' | 'y' | null>(null)


function Line(props: { direction: 'x' | 'y', activeDirection: 'x' | 'y' | null }) {
    return (
        <motion.div
            initial={false}
            animate={{ opacity: props.activeDirection === props.direction ? 1 : 0.3 }}
            transition={{ duration: 0.1 }}
            style={{rotate: props.direction === 'y' ? 90 : 0 }}
            class="line"
        />
    )
}
</script>

<template>
    <div id="example">
        <Line direction="x" :activeDirection="activeDirection" />
        <Line direction="y" :activeDirection="activeDirection" />
        <motion.div
            drag
            dragDirectionLock
            @directionLock="direction => activeDirection = direction"
            @dragEnd="() => activeDirection = null"
            :dragConstraints="{ top: 0, right: 0, bottom: 0, left: 0 }"
            :dragTransition="{ bounceStiffness: 500, bounceDamping: 15 }"
            :dragElastic="0.2"
            :whileDrag="{ cursor: 'grabbing' }"
            class="box"
        />
    </div>
</template>

<style>
#example {
    width: 300px;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.box {
    width: 52px;
    height: 52px;
    border: 1px solid var(--white);
    position: absolute;
    cursor: grab;
}

.line {
    width: 300px;
    height: 1px;
    border-top: 1px dashed var(--white);
    position: absolute;
}

</style>