fix(item-update): visibility of range spanning items not always correct#1846
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ChristianKrebel wants to merge 1 commit into
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fix(item-update): visibility of range spanning items not always correct#1846ChristianKrebel wants to merge 1 commit into
ChristianKrebel wants to merge 1 commit into
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Remove binary search for items having an end time because items starting before range and ending after it were left out. Fixes visjs#1657
ChristianKrebel
commented
Dec 12, 2024
| _resetSubgroups() { | ||
| for (const subgroup in this.subgroups) { | ||
| if (this.subgroups.hasOwnProperty(subgroup)) { | ||
| if (Object.prototype.hasOwnProperty.call(this.subgroups, subgroup)) { |
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This is not related to the fix but the pre-commit-hook did not let me commit without fixing it because it lints the whole file instead of only the changes.
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@ChristianKrebel Thanks for looking into this and providing a fix! I have not really tested this and it also might introduce a lower performance but this works should not be ignored. I think we should merge this! |
mojoaxel
approved these changes
Dec 3, 2025
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Items starting before the visible range and ending after it were not always shown if zoomed in too much because of the binary search used for it. I tried to fix the conditions but I could not get it to work with a binary search (maybe someone has a better way?). Also, different approaches like spatial index logic fixed the problem but did not improve performance. So I kept it simple and removed the binary search case for items that have an end time and always brute force check them for visibility. This may worsen performance when having many items with end times but in my manual testing (private repo) it is not performant either way.
Question: Should we make this fix optional per config because it may have a bigger impact?
Module: timeline/component/group
Fixes #1657