topic ArcGIS Javascript API 4.29 SearchWidget causes jagged lines around curves in ArcGIS JavaScript Maps SDK Questions

ArcGIS Javascript API 4.29 SearchWidget causes jagged lines around curves

TomNicoski — Tue, 14 May 2024 13:29:01 GMT

After moving from 4.28 to 4.29 I get the jagged lines (see attached) while doing a normal search. It does straighten up in a few seconds. The only thing that fixes it to date is changing back to 4.28. Has anyone else run into this problem?

Re: ArcGIS Javascript API 4.29 SearchWidget causes jagged lines around curves

Noah-Sager — Tue, 14 May 2024 14:36:11 GMT

Hi @TomNicoski, thanks for posting your question here. I'm not sure where the jagged lines are in the attached screenshot. Can you share a reproducible test-app? Or share how the issue can be reproduced?

Re: ArcGIS Javascript API 4.29 SearchWidget causes jagged lines around curves

JoelBennett — Tue, 14 May 2024 17:14:03 GMT

This may not be an issue specific the Search widget since the same behavior can be observed without it. It seems to be a matter of zooming in on a FeatureLayer several levels at once. For example, below are some roads that appear this way after zooming from level 16 to level 19.

Here's what it looks like a second or two later after it refreshes:

This is the result of a tradeoff the SDK makes for efficient operation. When rendering a feature layer, it requests a generalized (i.e. less detailed) copy of the features' geometry that will still appear the same at the scale you're viewing, while sending less data over the network. For example, my roads looked fine at level 16; it wasn't until I viewed that same geometry at level 19 that it appeared less detailed. Once zoomed in, the SDK retrieved the same features again, but at a level of detail suitable for level 19.

You might consider disabling this generalization, but you may notice a significant drop in performance.

Re: ArcGIS Javascript API 4.29 SearchWidget causes jagged lines around curves

TomNicoski — Tue, 14 May 2024 18:46:43 GMT

You are right, I was able to make this happen when just zooming in.