v2.1.0 — Multi-point density gradients

New in this release:

• Multi-point density gradients: a gradient zone is no longer limited to two distance/density points. Add any number of points along the direction axis for a piecewise-linear density profile — for example dense near a stage, easing through the middle, then dropping at the back. Use + Add density point in the zone panel; adding a point never changes the count until you edit it. Duplicate distances create step profiles.
• Crowd totals still use exact integration of the profile over the real zone geometry (minus obstructions), validated against analytic cases.
• Share links and project files persist every point. Existing links keep working; older builds reading a new multi-stop link fall back to a simple two-point gradient.

Also includes the v2.0.1-v2.0.2 fixes: working Grayscale toggle on the 2D map and crisp native cursors on scaled high-DPI screens.

Download crowd-count.html below for the offline single-file app — save it anywhere and double-click it. Map tiles, place search, Google features, and the animated density references need an internet connection; everything else works offline.