mapbox/mapbox-gl-js

hasFeatures function

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#7,813 创建于 2019年1月24日

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 (11 评论) (0 反应) (0 负责人)JavaScript (10,532 star) (2,203 fork)batch import
feature :green_apple:good first issueneeds discussion :speech_balloon:

描述

Would it be possible to add a function that checks if there are any features in a query? It would work like queryRenderedFeatures but only return true or false.

This would make it more efficient to query if there are any areas under the mousepointer for changing the cursor style.

贡献者指南

技术栈
javascript
领域
frontend
议题类型
feature
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
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half day
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stale
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clear
前置要求
familiarity with mapbox gl js APIunderstanding of queryRenderedFeatures
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
70
研究方向
The issue requests a new hasFeatures function that returns a boolean instead of an array. The implementation should likely mirror queryRenderedFeatures but exit early upon finding the first feature. Look at the source code for queryRenderedFeatures in the repository (e.g., src/ directory) to understand parameters and implementation. The discussion in the issue comments may provide additional context on expected behavior and performance considerations. No linked PRs or maintainer responses clarify scope.