_NPCScan.Overlay is an addition to _NPCScan that adds map overlays for rare mob patrols.  When you search for a rare in _NPCScan, _NPCScan.Overlay will show where it patrols until you find it.  It works similarly to keithgabryelski's Rare Spawn Overlay, but supports the minimap and has a much smaller download size, along with a few new features.

Special thanks to Rare Spawn Overlay's patrol paths and Routes' minimap drawing code for inspiration!

Note: _NPCScan.Overlay works hand in hand with _NPCScan. Please install both, and keep both up to date!

Details

World Map

In addition to drawing paths on the World Map, _NPCScan.Overlay adds a key to a corner of the window with each rare's name.  It only appears in zones that have rare maps, like Netherstorm as seen in the screenshot.  If you need to read something under the key, just move your mouse over top of it and the key will jump to a different corner.

Most map mods like Atlas and Cartographer3 will inherit the key and overlays from this module.  Even Carbonite's map display will show them.

Battlefield Minimap

The small “Battlefield Minimap” (AKA the “Zone Map”) also shows mob paths.

Minimap

All shapes and sizes of minimaps are supported.  Rotating minimaps work fine as well.

Also shown in the minimap's screenshot is the “found” range ring highlighting where Dirkee probably was when the alert went off.  That is, Dirkee was seen at the middle of that ring, and he could have been anywhere within the 100 yard ring around that point.

One feature not shown in the screenshot is a thinner 100 yard range ring around your character.  It helps you gauge _NPCScan's detection range, so you can sweep through zones more effectively.  This option can be found in the Minimap subsection of the options panel, detailed below.

Options

_NPCScan.Overlay's options can be found under _NPCScan's main options menu, under _NPCScan > Overlay.  From there, you can enable/disable each map display, and configure settings specific to each.

Each map display can have its overall transparency set independently with the “Alpha” slider, so that it doesn't obscure the maps themselves.