v2.21.0 (2026-07-24)

Overview

Vite Horizon 2.21.0 brings the Advanced Editor closer to the Map Editor — it gains Reshape and Hull, and loses Cut — and makes repeated use of the Map Editor's Offset tool much lighter on the browser.

Breaking Changes

Cut removed from the Advanced Editor

The Cut button is no longer part of the Advanced Editor. To split a polygon along a line, use Cut in the Map Editor, which also offers the wider set of shape tools.

New Features and Improvements

Advanced Editor: Reshape and Hull

Two tools already in the Map Editor are now available in the Advanced Editor:

• Reshape — redraw part of a target polygon or line so its boundary follows a single continuous line you draw in the reference layer
• Hull — replace all target shapes with the single convex hull enclosing them

See the Advanced Editor guide.

Offset stays fast when used repeatedly

Offsetting a shape with rounded corners used to multiply its vertex count enormously — a simple polygon could come back with thousands of points — so each further click on Offset became slower and the map heavier to draw. Rounded corners are now drawn with a sensible level of detail relative to the offset distance, which measured roughly eight times fewer vertices and ten times faster on a corner-rich shape, with no visible change to the curves.

Follow-up in 2.21.1

A follow-up patch fixed a separate problem where repeatedly offsetting a polygon inwards could freeze the tab, and added user-selectable corner styles — Miter (the new default), Round, Bevel and Square.

Under the Hood

• The offset detail level scales with the distance you enter, so curves stay equally smooth at any offset size.
• Sharper corner styles were measured rather than assumed: they produce more vertices than well-tuned round corners on corner-rich shapes, which is why the fix was the detail level and not a change of corner style.