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arma3:terrain:global-mapper-latitude-longitude-config [2019-01-21 14:24] snakeman added better note about negative latitude. |
arma3:terrain:global-mapper-latitude-longitude-config [2019-01-21 20:40] snakeman rewrite due new info of maparea and mapzone being obsolete. |
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**Global mapper Latitude/Longitude config tutorial for ArmA 3 real world data terrains.** | **Global mapper Latitude/Longitude config tutorial for ArmA 3 real world data terrains.** | ||
- | Load global mapper project, drag a box around bottom left user created feature grid vertice. | + | Load global mapper project, select user created feature grid. |
- | RMB -> vertex editing -> set position of selected vertices. | + | RMB -> crop combine/split/split functions -> subdivide quadliteral area. Use grid number of rows and columns: 2, click OK. On modify feature info dialog click OK. |
+ | |||
+ | Drag a box around the new vertice in center of your user created feature grid, then RMB -> vertex editing -> set position of selected vertices. | ||
Tick geographic coordinates (latitude/longitude). | Tick geographic coordinates (latitude/longitude). | ||
- | Copy paste latitude and goto [[http://www.latlong.net/degrees-minutes-seconds-to-decimal-degrees|latlong.net]] website, paste values to latitude box. Repeat this for longitude. | + | Copy latitude to clipboard and goto [[http://www.latlong.net/degrees-minutes-seconds-to-decimal-degrees|latlong.net]] website, paste values to latitude box. Repeat this for longitude. |
Note that this websites longitude seconds input box only accepts integers (full numbers, no XX.XXXXX). | Note that this websites longitude seconds input box only accepts integers (full numbers, no XX.XXXXX). | ||
+ | |||
+ | Click convert to decimal degrees button and now you have two values, latitude and longitude. | ||
For some reason arma3 **latitude is with NEGATIVE number if its north of equator**. | For some reason arma3 **latitude is with NEGATIVE number if its north of equator**. | ||
- | Click convert to decimal degrees button and now you have two values. Copy paste lat to mapArea[] first line, shown below | + | Now just copy-paste the calculated values from latlong.net website into your config and don't forget the north of equator negative value. |
- | <code cpp> | + | |
- | mapArea[] = | + | |
- | { | + | |
- | -14.60974078, 42.84222222, // latitude here | + | |
- | , // longitude here | + | |
- | }; | + | |
- | </code> | + | |
- | Back in global mapper drag a box around top right user created feature grid vertice, get the coordinates same as latitude. | + | config.cpp |
- | + | ||
- | Paste them to mapArea[] second line, shown below | + | |
- | <code cpp> | + | |
- | mapArea[] = | + | |
- | { | + | |
- | -14.60974078, 42.84222222, // latitude here | + | |
- | -15.35597344, 43.59888889 // longitude here | + | |
- | }; | + | |
- | </code> | + | |
- | + | ||
- | Next we get the center latitude longitude coordinate for the terrain, go back to global mapper, select the whole user created feature grid, RMB -> crop combine/split/split functions -> subdivide quadliteral area. Use grid number of rows and columns: 2, click OK. On modify feature info dialog click OK. | + | |
- | + | ||
- | Drag a box around the vertice in center of your user created feature grid, get its coordinates same way we did above. | + | |
- | + | ||
- | Paste values | + | |
<code cpp> | <code cpp> | ||
latitude = -14.98310431; | latitude = -14.98310431; | ||
longitude = 43.21916667; | longitude = 43.21916667; | ||
- | </code> | ||
- | |||
- | Finally grab the mapZone value from global mapper status bar (bottom) where it says like UTM 38N. | ||
- | <code cpp> | ||
- | mapZone = 38; | ||
</code> | </code> |