mapbox/mapbox-gl-js

hasFeatures function

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#7,813 opened on Jan 24, 2019

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feature :green_apple:good first issueneeds discussion :speech_balloon:

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Description

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.

Contributor guide

Research direction
Create a new function `hasFeatures` that wraps `queryRenderedFeatures` and returns a boolean. Optimize by stopping the query after finding the first feature. Look at the existing `queryRenderedFeatures` implementation in the source code to understand the API and how to limit results.
Tech stack
javascript
Domain
frontend
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
JavaScriptGit
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70