Terrain Downloader is an add-on native to Tacview which will download terrain textures to cover all the objects in the map. If the there are no objects, tiles will be downloaded to cover a 5 degree-by-5-degree area around where your camera is centered.
Enable the add-on, if it is not already enabled, through the Add-ons→Enable/Disable Add-ons menu.
Terrain Downloader - Enable
Next, center your camera in the area around which you wish to download texture tiles (if there are no objects on the map) and go to Add-ons → Terrain Downloader → Cartography → MapQuest and choose between the map styles Map, Light, Dark, Hybrid or Satellite, and also indicate whether you wish the maps to be Transluscent.
Terrain Downloader - Enable
If you haven't done so already, you will be need to enter your MapQuest API key. Sign up for a free account at https://developer.maquest.com to be granted an API key which you can then enter at Add-ons → Terrain Downloader → Cartography → MapQuest→Enter MapQuest API Key..
Terrain Downloader - MapQuest API Key
Click Download MapQuest Tiles and wait while Tacview works - this part may take a few moments. When the process is completed a pop-up message will appear
Terrain Downloader - Download
Terrain Downloader - Completed
Close and re-launch Tacview to see the terrain textures.
