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uni-app与Vue3，实现3D圆柱形旋转画廊效果

news 2025/9/6 21:38:09

在移动应用开发中，吸引人的视觉效果是提升用户体验的关键因素之一。如何使用uni-app和Vue3实现一个令人惊叹的3D圆柱形旋转画廊效果，这种效果能让你的应用在视觉上脱颖而出。

效果概述

这个3D圆柱形旋转画廊利用CSS 3D变换技术，将图片排列在一个虚拟的圆柱体表面，创造出令人惊叹的3D视觉效果。用户可以通过点击导航按钮或指示器来旋转画廊，查看不同角度的图片，带来沉浸式的浏览体验。

实现原理

1. 3D变换基础

实现这一效果的核心是CSS的3D变换属性。我们通过以下关键属性创建3D空间：

perspective: 定义3D元素的透视效果，值越大，3D效果越柔和
transform-style: preserve-3d: 确保子元素保持在3D空间中
rotateY(): 绕Y轴旋转元素，创建圆柱形排列效果
translateZ(): 沿Z轴移动元素，控制元素距离视点的远近

2. 圆柱形排列计算

3. 旋转控制

通过改变容器的rotateY值来实现整体旋转效果

完整代码

<template><view class="container"><view class="gallery-container"><viewid="carousel"class="carousel":style="{ transform: `rotateY(${currentRotation}deg)` }"><viewv-for="(item, index) in items":key="index":class="[`carousel-item`,index === getClassName ? `carousel-item-active` : '',]":style="getItemStyle(index)"><image :src="item.src" mode="aspectFill" class="carousel-image" /></view></view><button class="nav-btn prev" @tap="rotateCarousel(rotationStep)"><uni-icons type="left" color="#ffffff" size="30"></uni-icons></button><button class="nav-btn next" @tap="rotateCarousel(-rotationStep)"><uni-icons type="right" color="#ffffff" size="30"></uni-icons></button></view><view class="gallery-indicators"><viewv-for="(item, index) in items":key="index"class="indicator":class="{ active: isActive(index) }"@tap="goToItem(index)"></view></view><view class="gallery-info"><h2 class="gallery-title">沉浸式3D体验</h2><p class="gallery-desc">这个创意画廊利用CSS3D变换技术，将图片排列在一个虚拟的圆柱体表面，创造出令人惊叹的3D视觉效果。你可以通过点击导航按钮来旋转画廊，查看不同角度的图片。</p></view></view>
</template><script setup lang="ts">
import { ref, onMounted, onUnmounted, computed } from "vue";// 图片数据
const items = ref([{ src: "https://picsum.photos/id/1018/600/800" },{ src: "https://picsum.photos/id/1015/600/800" },{ src: "https://picsum.photos/id/1019/600/800" },{ src: "https://picsum.photos/id/1039/600/800" },{ src: "https://picsum.photos/id/1043/600/800" },{ src: "https://picsum.photos/id/1045/600/800" },
]);const currentRotation = ref(0);
// 增加旋转角度，使每次旋转后只显示三个卡片
const rotationStep = 60;
const totalItems = items.value.length;// 自动播放计时器
let autoPlayInterval: number | null = null;// 获取每个项目的样式 - 调整角度和距离使一次只显示三个
const getItemStyle = (index: number) => {// 计算每个项目的角度，6个项目每个间隔60度const angle = index * (360 / totalItems);// 减小Z轴距离，使卡片更靠近中心，不会铺满全屏const translateZ = 220;return `transform: rotateY(${angle}deg) translateZ(${translateZ}px)`;
};// 检查指示器是否激活
const isActive = (index: number) => {const activeIndex = Math.round((-currentRotation.value % 360) / rotationStep);return index === ((activeIndex % totalItems) + totalItems) % totalItems;
};// 旋转画廊
const rotateCarousel = (step: number) => {currentRotation.value += step;
};// 跳转到指定项目
const goToItem = (index: number) => {const targetRotation = index * -rotationStep;const diff = targetRotation - currentRotation.value;const steps = diff / rotationStep;rotateCarousel(steps * rotationStep);
};// 自动播放功能
const startAutoPlay = () => {if (autoPlayInterval) {clearInterval(autoPlayInterval);}autoPlayInterval = setInterval(() => {rotateCarousel(-rotationStep);}, 5000) as unknown as number;
};// // 初始化开启播放
// onMounted(() => {
//   startAutoPlay();
// });//通过computed计算，当前卡片的样式
const getClassName = computed(() => {// 计算当前激活的元素索引const currentIndex = (currentRotation.value / 60) % totalItems;// 使用 Math.floor 来确保索引是整数 Math.abs保证是正数const activeIndex = Math.abs(Math.floor(currentIndex));console.log("🚀 ~ activeIndex:", activeIndex);return activeIndex;
});onUnmounted(() => {if (autoPlayInterval) {clearInterval(autoPlayInterval);}
});
</script><style lang="scss" scoped>
.container {background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);min-height: 100vh;color: #f8fafc;padding: 20rpx;box-sizing: border-box;
}.gallery-container {position: relative;width: 100%;height: 500px;display: flex;justify-content: center;align-items: center;perspective: 1200px; /* 增加透视距离，增强3D效果 */
}.carousel {position: relative;width: 220px; /* 缩小卡片宽度 */height: 300px; /* 缩小卡片高度 */transform-style: preserve-3d;transition: transform 0.8s ease-out; /* 减慢过渡速度，使旋转更平滑 */
}.carousel-item {position: absolute;width: 100%;height: 100%;backface-visibility: hidden;border-radius: 10px;overflow: hidden;box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);transition: transform 0.5s ease, box-shadow 0.5s ease;opacity: 0.9; /* 稍微降低不透明度，突出当前卡片 */
}/* 选中卡片的样式强化 */
.carousel-item-active {opacity: 1;box-shadow: 0 0 30px rgba(22, 93, 255, 0.7);
}.carousel-image {width: 100%;height: 100%;transition: transform 0.5s ease;
}.nav-btn {position: absolute;top: 50%;transform: translateY(-50%);background: rgba(22, 93, 255, 0.8);color: white;border: none;border-radius: 50%;width: 50px;height: 50px;display: flex;justify-content: center;align-items: center;z-index: 10;transition: all 0.3s ease;
}.nav-btn:active {background: rgba(22, 93, 255, 1);transform: translateY(-50%) scale(1.1);box-shadow: 0 0 15px rgba(22, 93, 255, 0.7);
}.nav-btn.prev {left: 5%;
}.nav-btn.next {right: 5%;
}.gallery-indicators {display: flex;justify-content: center;margin-top: 30px;gap: 10px;
}.indicator {width: 12px;height: 12px;border-radius: 50%;background: rgba(248, 250, 252, 0.3);transition: all 0.3s ease;
}.indicator.active {background: rgba(22, 93, 255, 1);transform: scale(1.2);box-shadow: 0 0 10px rgba(22, 93, 255, 0.7);
}.gallery-info {max-width: 800px;margin: 30px auto;text-align: center;padding: 0 20px;
}.gallery-title {font-size: 36rpx;font-weight: 700;margin-bottom: 15px;color: #f8fafc;text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}.gallery-desc {font-size: 28rpx;color: rgba(248, 250, 252, 0.8);line-height: 1.6;
}
</style>