<!DOCTYPE html> <html> <head> <title>三螺旋模型动态演示</title> <style> body { margin: 0; } canvas { display: block; } #info { position: absolute; top: 20px; left: 20px; background: rgba(255,255,255,0.9); padding: 15px; border-radius: 5px; } </style> </head> <body> <div id="info"> <h3>三螺旋模型要素：</h3> <p style="color: #FF0000;">■ 党的领导</p> <p style="color: #00FF00;">
这段代码实现了一个基于Three.js的三螺旋模型动态演示。代码结构清晰，功能实现完整。以下是对代码的简要分析和优化建议： 代码分析 1. 场景初始化：使用Three.js创建了一个3D场景，设置了相机、渲染器和光源。 2. 螺旋路径生成：通过`createHelix`函数生成了三个不同颜色的螺旋路径，分别代表“党的领导”、“生态文化”和“内生动力”。 3. 动画循环：在`animate`函数中实现了螺旋的动态旋转效果，并通过`OrbitControls`实现了用户交互控制。 4. 响应式布局：通过监听窗口大小变化事件，动态调整相机和渲染器的尺寸。 优化建议 1. 性能优化：在动画循环中，`requestAnimationFrame`已经足够高效，但可以考虑减少不必要的计算。例如，`Date.now()`的调用可以放在循环外部，避免每次循环都调用。 2. 代码复用：`createHelix`函数可以进一步抽象，减少重复代码。例如，可以将螺旋的颜色、半径等参数作为对象传递。 3. 用户体验：可以增加一些交互提示，例如在用户操作时显示帮助信息，或者增加一个重置视角的按钮。 代码优化示例 ```javascript // 优化后的createHelix函数 function createHelix(params) { const { color, radius = 2, height = 8 } = params; const path = new THREE.Curve( (t) => new THREE.Vector3( radius * Math.cos(t * Math.PI * 2), height * (t - 0.5), radius * Math.sin(t * Math.PI * 2) ) ); const geometry = new THREE.TubeGeometry( path, 64, 0.3, 8, false ); const material = new THREE.MeshPhongMaterial({ color: color, shininess: 100 }); return new THREE.Mesh(geometry, material); } // 创建三个螺旋 const helices = [ { color: 0xFF0000, radius: 2.2 }, // 党的领导 { color: 0x00FF00, radius: 1.8 }, // 生态文化 { color: 0xFFD700, radius: 2.0 } // 内生动力 ].map(params => createHelix(params)); helices.forEach(helix => scene.add(helix)); ``` 额外需要注意的逻辑点 1. 内存管理：在Three.js中，确保在不需要时正确释放资源，避免内存泄漏。 2. 兼容性：确保代码在不同浏览器和设备上的兼容性，特别是移动设备上的性能表现。 3. 安全性：如果代码涉及用户输入或外部数据，确保进行适当的验证和清理，防止XSS等安全问题。 [2025-03-22 10:09:56 | AI写代码神器 | 621点数解答]
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