v2.20.0 (2026-07-16)

Overview

Vite Horizon 2.20.0 catches two mistakes that used to pass silently: exporting shapes that overlap each other, and uploading a bare .shp file with the wrong coordinate system selected.

Breaking Changes

None in this release. Both checks are no-ops when nothing is wrong.

New Features and Improvements

Overlapping geometry is detected before export or save

Drawing the same shape twice in the Map Editor used to export or save duplicated, stacked geometry with no warning. Before an export (SHP, KML, FIRS) or a save to a My Layer, the editor now checks whether any shapes overlap each other at the same location and, if they do, opens an Overlapping Geometry Detected dialog offering:

• Merge — combine each overlapping group into a single feature; non-overlapping shapes are untouched
• Keep Separate — proceed with every shape exactly as drawn
• Cancel — go back and edit

Only like-with-like shapes are compared, and edge-touching polygons or lines that merely cross at a point are not flagged. If nothing overlaps, the dialog never appears.

See the Map Editor guide.

Uploads check the coordinate system of a bare .shp

A standalone .shp file carries no coordinate-system information — that lives in the .prj file, which is only present in a ZIP. Horizon now samples the coordinates of a bare .shp and reports what it found:

• Coordinate system auto-corrected — your selection did not fit but another system placed the data correctly in Tasmania; the dropdown is updated and the corrected system is used
• Selected coordinate system looks wrong — the coordinates are the wrong kind for your selection (degrees where metres were expected, or the reverse)
• Shapes appear outside Tasmania — usually the wrong MGA zone
• Coordinate system taken from your selection — nothing looked wrong

ZIP uploads containing a .prj are unchanged; they already read the coordinate system from the file.

See the Uploader guide.

One case cannot be detected

Two systems for the same zone that differ only by datum — GDA94 / MGA Zone 55 and GDA2020 / MGA Zone 55, about 1.8 m apart — both place the data correctly in Tasmania, so your selection is kept. Only a ZIP with a .prj resolves this.

Under the Hood

• Overlap detection compares bounding boxes first and only then computes exact intersections, so an export of many shapes is not slowed down noticeably.
• Whichever choice you make in the dialog, each remaining shape is saved as its own feature, so non-overlapping work is never merged as a side effect.