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Feat arrow line #2792
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Summary of ChangesHello @lzxue, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed! This pull request delivers a significant visual enhancement by adding a new 'arrow line' feature to the LineLayer component. This allows users to easily integrate directional indicators into their line visualizations, which is crucial for applications requiring path guidance or flow representation. The changes encompass core rendering logic, API updates, and extensive documentation to support this new functionality. Highlights
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Code Review
此 PR 引入了线图层的箭头功能,这是一个很棒的新特性。整体实现看起来不错,包括核心逻辑、着色器代码和相关文档。
我发现了一些可以改进的地方,主要集中在以下几个方面:
- 类型安全和接口定义:在示例中使用了未在接口中定义的
count属性,同时LineTriangulation函数的参数可以有更严格的类型定义。 - 代码健壮性:在片段着色器中存在一个潜在的除零风险,可能导致渲染失败。
- 示例代码配置:
arrow.ts示例中whiteArrowLayer的箭头配置似乎不正确,单位可能用错了。 - 文档结构:中文文档中新加内容的位置可以调整得更合理。
详细的建议请见具体的代码审查评论。修复这些问题后,代码质量会更高。
| arrow: { | ||
| enable: true, | ||
| count: 2, | ||
| width: 0.003, | ||
| height: 0.004, | ||
| }, | ||
| }); |
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这里的 arrow 配置存在几个问题:
- 未定义的
count属性:配置中使用了count: 2,但arrow的接口定义(ILineLayerStyleOptions)中并没有count这个属性。这是一个未记录、未类型化的属性,请在接口中添加并提供文档。 - 不正确的
width和height单位:width和height的值(0.003和0.004)非常小,看起来像是地理坐标单位。然而,文档和实现都表明这些值应该是像素单位。这会导致箭头无法正确渲染。请将其修改为合理的像素值。 - (次要)另外,在第 88 行的注释中,
rgba(255, 94, 0, 1)是橙色,而不是“黄色箭头”。
| // ...existing code... | ||
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| ## 箭头效果(arrow) | ||
| 支持在线图层上显示方向箭头,常用于导航、路径方向标识。 | ||
| ### 配置项 | ||
| | 属性 | 类型 | 说明 | | ||
| | ----------- | ------- | -------------------- | | ||
| | enable | boolean | 是否显示箭头 | | ||
| | spacing | number | 箭头间距(像素) | | ||
| | width | number | 箭头宽度(像素) | | ||
| | height | number | 箭头高度(像素) | | ||
| | strokeWidth | number | 箭头线条宽度(像素) | | ||
| | color | string | 箭头颜色(CSS 色值) | | ||
| ### 效果说明 | ||
| - 箭头为 V 形轮廓,非实心三角。 | ||
| - 箭头叠加在线本身之上,线和箭头可分别设置颜色。 | ||
| - 适用于导航、路径方向等场景。 | ||
| ### 示例代码 | ||
| ```ts | ||
| layer.style({ | ||
| color: '#0000FF', // 线颜色 | ||
| arrow: { | ||
| enable: true, | ||
| spacing: 80, | ||
| width: 30, | ||
| height: 40, | ||
| strokeWidth: 4, | ||
| color: '#FFFF00', // 箭头颜色 | ||
| }, | ||
| }); | ||
| ``` |
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Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
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