mapbox/mapbox-gl-js

hasFeatures function

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#7,813 建立於 2019年1月24日

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 (11 留言) (0 反應) (0 負責人)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.

貢獻者指南

技術棧
javascript
領域
frontend
議題類型
feature
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
3
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
half day
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
clear
前置要求
familiarity with mapbox gl js APIunderstanding of queryRenderedFeatures
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
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.