his_user_miniapp/pages_course/components/turntableOne.vue

<template>
	<uni-popup ref="turntablePopup" type="center" :is-mask-click="false">
		<view class="turntable">
			<image class="bg" src="https://cos.his.cdwjyyh.com/fs/20250910/9a6263291ec0429ea5828a15b2b490dc.png" mode="aspectFit"></image>
			<view class="turntable-con">
				<image class="text" src="https://cos.his.cdwjyyh.com/fs/20250910/fc08b64307a344b4948568fa0f81401e.png" mode="heightFix"></image>
				<image class="base" src="https://cos.his.cdwjyyh.com/fs/20250910/9385e4a6d5e245dfb86f425f49235589.png" mode="aspectFit"></image>
				<image class="decoration_img" src="https://cos.his.cdwjyyh.com/fs/20250910/86577ed4fc50420d99b1153e2dd6e1df.png" mode="aspectFit"></image>
				<view class="ring">
					<view class="canvas-content" :class="{'infinite-spin': spinning}">
						<view :animation="animationData" class="canvas-content" id="zhuanpano" style="">
							<view class="canvas-line">
								<!-- <canvas canvas-id="sector" style="width:502rpx;height:502rpx" /> -->
								<view class="canvas-litem" v-for="(item,index) in list" :key="index"
									:style="{transform:'rotate('+(index * width + width / 2)+'deg)'}"></view>
							</view>

							<view class="canvas-list">
								<view class="canvas-item"
									:style="{transform: 'rotate('+((index) * width)+'deg)', zIndex:index}"
									v-for="(iteml,index) in list" :key="index">
									<view class="canvas-item-text" :style="'transform:rotate('+(index)+')'">
										<view class="b">{{iteml.name}}</view>
										<image class="icon-awrad iconfont" :src="iteml.iconUrl" mode="aspectFit">
										</image>
									</view>
								</view>
							</view>
						</view>
					</view>
					<image class="button" src="https://cos.his.cdwjyyh.com/fs/20250910/d05462c59e7f4ab98e5205b7f8172325.png" mode="aspectFit" @click="playReward">
					</image>
				</view>
				<image class="ring_bg" src="https://cos.his.cdwjyyh.com/fs/20250910/41bea8eda62e484d94a19f18316e509b.png" mode="aspectFit"></image>
			</view>
		</view>
		<image class="close" src="https://cos.his.cdwjyyh.com/fs/20250910/93608bad8ad1479a854ec26e8eaaacea.png" @click="close"></image>
	</uni-popup>
</template>

<script>
	import {
		getVideoRewardRules
	} from "@/api/course.js"
	export default {
		data() {
			return {
				running: false,
				spinning: false, // 是否处于无限旋转
				list: [],
				width: 0,
				animationData: {},
				btnDisabled: '',
				runDeg: 0,
				targetIdx: -1,
				duration: 1000,
				currentDeg: 0, // 实时角度
				idleTimer: null,
				animationRun: null
			}
		},
		methods: {
			getVideoRewardRules(urlOption) {
				const param = {
					type: 3,
					...urlOption
				}
				getVideoRewardRules(param).then(res => {
					if (res.code == 200) {
						this.list = res.data || []
						this.width = 360 / this.list.length;
					} else {
						uni.showToast({
							title: res.msg,
							icon: 'none'
						})
					}
				})
			},
			open(urlOption) {
				this.animationRun = uni.createAnimation({
					duration: 0
				});
				this.animationRun.rotate(0).step();
				this.animationData = this.animationRun.export();
				this.running = false
				this.spinning = false;
				clearInterval(this.idleTimer);
				this.runDeg = 0
				this.targetIdx = -1
				this.$refs.turntablePopup.open()
				this.getVideoRewardRules(urlOption)
			},
			close(type) {
				if (type == 'close') {
					this.running = false
					this.spinning = false;
					clearInterval(this.idleTimer);
				}
				if (this.running) {
					uni.showToast({
						title: '抽取中，请勿关闭',
						icon: 'none'
					})
					return
				}
				this.$refs.turntablePopup.close()
			},
			drawFanWithAlternateColor(id, x, y, r, count) {
				const ctx = uni.createCanvasContext(id, this);
				const sweep = 360 / count; // 每份角度
				let start = -90 - sweep / 2; // 第一个扇形起始角度（deg）

				for (let i = 0; i < count; i++) {
					const end = start + sweep; // 结束角度
					let color;
					color = i % 2 === 0 ? '#FFDFD3' : '#FFF';

					ctx.beginPath();
					ctx.moveTo(x, y);
					ctx.arc(
						x, y, r,
						(start * Math.PI) / 180,
						(end * Math.PI) / 180
					);
					ctx.closePath();
					ctx.setFillStyle(color);
					ctx.fill();

					start = end; // 下一个扇形接着画
				}

				ctx.draw();
			},
			animation(index = null) {
				//中奖index
				let list = this.list;
				let runNum = 1; //旋转8周

				// 旋转角度
				this.runDeg = this.runDeg || 0;
				this.runDeg = this.runDeg + (360 - this.runDeg % 360) + (360 * runNum - index * (360 / list.length)) + 1
				
				// const a = 360 / list.length;
				//    this.runDeg = this.currentDeg + 360 * 4  + (360 - this.currentDeg % 360)  - index * a + 1;      
				//创建动画
				this.animationRun = uni.createAnimation({
					duration: this.duration,
					timingFunction: 'ease'
				})
				console.log("=====animationRun=", this.animationRun)
				this.animationRun.rotate(this.runDeg).step();
				this.animationData = this.animationRun.export();
			},
			//发起抽奖
			playReward() {
				if (this.running) {
					uni.showToast({
						title: '抽取中',
						icon: 'none'
					})
					return
				}
				this.running = true
				this.startIdle();
				this.$emit('sendRewardFun',3)
				// setTimeout(() => {
				// 	this.endSuccess()
				// }, 2000)
			},
			startIdle() {
				this.spinning = true; // 打开 CSS 动画
				// 同时用定时器记录角度，方便后面衔接
				this.idleTimer = setInterval(() => {
					this.runDeg = (this.runDeg + 36) % 360; // 每 100ms 走 6°
				}, 100);
			},
			endSuccess(code) {
				this.targetIdx = this.list.findIndex(it=>it.code == code)
				const that = this
				this.spinning = false;
				clearInterval(this.idleTimer);
				if (this.targetIdx == -1) {
					uni.showToast({
						title: '抽奖失败',
						icon: 'none'
					})
					this.running = false;
					return
				}
				this.animation(this.targetIdx)
				setTimeout(() => {
					this.running = false;
					uni.showModal({
						title: '恭喜，中奖',
						content: this.list[this.targetIdx].name,
						showCancel: false,
						success: function(res) {
							if (res.confirm) {
								that.$refs.turntablePopup.close()
								that.$emit("openAppPop")
							} else if (res.cancel) {
								that.$refs.turntablePopup.close()
								that.$emit("openAppPop")
							}
						}
					});
				}, this.duration + 1000)
			}
		}
	}
</script>

<style scoped lang="scss">
	@keyframes spin {
		from {
			transform: rotate(0deg);
		}

		to {
			transform: rotate(360deg);
		}
	}

	.infinite-spin {
		animation: spin 1s linear infinite;
	}

	.close {
		width: 64rpx;
		height: 64rpx;
		margin: 24rpx auto 0 auto;
		display: block;
	}

	.turntable {
		position: relative;
		width: 660rpx;
		height: 880rpx;

		.bg {
			width: 660rpx;
			height: 880rpx;
			position: absolute;
			top: 0;
			left: 0;
		}

		&-con {
			width: 660rpx;
			height: 880rpx;
			display: flex;
			flex-direction: column;
			align-items: center;
			position: relative;
			z-index: 2;
		}

		.text {
			width: 520rpx;
			height: 104rpx;
			margin-top: 47rpx;
		}

		.base {
			width: 451rpx;
			height: 177rpx;
			position: absolute;
			bottom: 55rpx;
			left: 50%;
			transform: translateX(-50%);
			z-index: 3;
		}

		.decoration_img {
			width: 637rpx;
			height: 592rpx;
			position: absolute;
			bottom: 85rpx;
			left: 50%;
			transform: translateX(-50%);
			z-index: 4;
		}

		.ring {
			width: 502rpx;
			height: 502rpx;
			background: #FFFDFD;
			border-radius: 50%;
			position: relative;
			margin-top: 79rpx;
			z-index: 9;
		}

		.button {
			width: 158rpx;
			height: 200rpx;
			position: absolute;
			top: calc(50% - 21rpx);
			left: 50%;
			transform: translate(-50%, -50%);
			z-index: 99;
		}

		.ring_bg {
			width: 620rpx;
			height: 620rpx;
			position: absolute;
			bottom: 74rpx;
			left: 50%;
			transform: translateX(-50%);
			z-index: 6;
		}

		.canvas-content {
			position: absolute;
			left: 0;
			top: 0;
			z-index: 1;
			display: block;
			width: 502rpx;
			height: 502rpx;
			border-radius: inherit;
			/* background-clip: padding-box; */
			/* background-color: #ffcb3f; */
		}

		.icon-awrad {
			width: 72rpx;
			height: 72rpx;
			margin-top: 10rpx;
			object-fit: contain;
		}

		.canvas-list {
			position: absolute;
			left: 0;
			top: 0;
			width: inherit;
			height: inherit;
			z-index: 99;
		}

		.canvas-item {
			position: absolute;
			left: 0;
			top: 0;
			width: 100%;
			height: 100%;
			color: #e4370e;
			/* text-shadow: 0 1rpx 1rpx rgba(255, 255, 255, 0.6); */
		}

		.canvas-item-text {
			position: relative;
			display: block;
			padding-top: 14rpx;
			margin: 0 auto;
			text-align: center;
			-webkit-transform-origin: 50% 251rpx;
			transform-origin: 50% 251rpx;
			display: flex;
			flex-direction: column;
			align-items: center;
			color: #F72F26;
			font-weight: 500;
			font-size: 24rpx;
		}

		.canvas-item-text text {
			font-size: 30rpx;
		}

		/* 分隔线 */
		.canvas-line {
			position: absolute;
			left: 0;
			top: 0;
			width: inherit;
			height: inherit;
			z-index: 99;
		}

		.canvas-litem {
			position: absolute;
			left: 251rpx;
			top: 0;
			width: 1rpx;
			height: 251rpx;
			background-color: #FF4D2C;
			overflow: hidden;
			-webkit-transform-origin: 50% 251rpx;
			transform-origin: 50% 251rpx;
		}
	}
</style>