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2025-09-08 08:39:40 +08:00
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commit b982c63873
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<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
<title>红军长征路线动画</title>
<style>
body {
margin: 0;
font-family: "Microsoft YaHei", sans-serif;
background: #f0f8ff;
}
h2 {
text-align: center;
margin: 10px 0;
}
#map {
position: relative;
width: 90%;
max-width: 1200px;
height: 840px;
margin: 0 auto;
border: 2px solid #333;
background: url("background.jpeg") no-repeat center/cover;
overflow: hidden;
}
svg {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
}
#redFlag {
width: 30px;
height: 30px;
background: url("hongqi.jpg") no-repeat center/contain;
position: absolute;
offset-path: path('M100,350 C150,340 200,320 250,300 300,280 350,260 400,240 450,220 500,200 550,180 600,160 650,140 700,100');
offset-distance: 0%;
animation: move 20s linear paused;
}
@keyframes move {
to {
offset-distance: 100%;
}
}
#subtitle {
text-align: center;
margin-top: 10px;
font-size: 16px;
height: 24px;
}
#controls {
text-align: center;
margin-top: 10px;
}
button {
margin: 0 5px;
padding: 6px 12px;
font-size: 14px;
cursor: pointer;
}
</style>
</head>
<body>
<h2>红军长征路线动画演示</h2>
<div id="map">
<svg viewBox="0 0 900 500">
<!-- 路线 -->
<path id="route"
d="M100,350 C150,340 200,320 250,300 300,280 350,260 400,240 450,220 500,200 550,180 600,160 650,140 700,100"
stroke="red" stroke-width="2" fill="none" stroke-dasharray="4,4" />
</svg>
<!-- 小红旗 -->
<div id="redFlag"></div>
</div>
<div id="subtitle">1934年10月 从江西瑞金出发</div>
<div id="controls">
<button onclick="play()">开始</button>
<button onclick="pause()">暂停</button>
<button onclick="reset()">重播</button>
</div>
<script>
const flag = document.getElementById("redFlag");
const subtitle = document.getElementById("subtitle");
const timeline = [
{ p: 0, text: "1934年10月 从江西瑞金出发" },
{ p: 10, text: "1934年11月 血战湘江" },
{ p: 20, text: "1935年1月 遵义会议" },
{ p: 35, text: "四渡赤水" },
{ p: 50, text: "强渡大渡河,飞夺泸定桥" },
{ p: 65, text: "翻越夹金山" },
{ p: 80, text: "穿越草地,懋功会师" },
{ p: 95, text: "1935年10月 到达吴起镇" }
];
let interval;
function play() {
flag.style.animationPlayState = "running";
interval = setInterval(updateSubtitle, 200);
}
function pause() {
flag.style.animationPlayState = "paused";
clearInterval(interval);
}
function reset() {
flag.style.animation = "none";
flag.offsetHeight; // 触发重排
flag.style.animation = "move 20s linear paused";
subtitle.textContent = timeline[0].text;
clearInterval(interval);
}
function updateSubtitle() {
const computed = window.getComputedStyle(flag);
const distance = computed.offsetDistance;
const percent = parseFloat(distance);
for (let i = timeline.length - 1; i >= 0; i--) {
if (percent >= timeline[i].p) {
subtitle.textContent = timeline[i].text;
break;
}
}
}
</script>
</body>
</html>

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https://yqnn.github.io/svg-path-editor/