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Hexagonal Grids
Hexagonal grids are used in some games but aren’t quite as straightforward or common as square grids. I’ve been collecting hex grid resources for nearly 20 years, and wrote this guide to the most elegant approaches that lead to the simplest code, largely based on the guides by Charles Fu and Clark Verbrugge. I’ll describe the various ways to make hex grids, the relationships between them, as well as some common algorithms. Many parts of this page are interactive; choosing a type of grid will update diagrams, code, and text to match.
hex  programming  coordinates  math  game 
7 hours ago by kjeldahl
gPoint: Convert geographic coordinates between projections
This class can be used to convert longitude and latitude coordinates between Universal Transverse Mercator (UTM) or Lambert Conformal Conic map projections.

It is useful to plot latitude and longitude values of points on a map image.
gis  php  dev  coordinates 
24 days ago by DirkR
Polar to Rectangular Online Calculator
This online calculator converts between polar and rectangular forms of complex numbers in degrees and radians.
electrical  engineering  rectangular  math  polar  coordinates  notation  calculator 
6 weeks ago by nebakineza
Google Maps - GPS coordinates, latitude and longitude
With Google Maps, find the GPS Coordinates of any address or vice versa. Get the latitude and longitude of any GPS location on Google Maps.
googlemaps  maps  tools  coordinates 
7 weeks ago by rockbandit
EPSG.io: Coordinate Systems Worldwide
EPSG.io: Coordinate systems worldwide (EPSG/ESRI), preview location on a map, get transformation, WKT, OGC GML, Proj.4. http://EPSG.io/ made by @klokantech
cartography  epsg  projections  coordinate-systems  gis  coordinates  geospatial  geo  geography 
august 2017 by matthojo
Free Map Tools
About User Menu An online resource that enables visitors to easily and quickly use maps in order to measure , search and overlay mark-up elements on maps for a…
travel  navigation  coordinates  maps  grid  reference  calculator  tools  resources 
august 2017 by asaltydog
Calculating distances using National Grid references
Example locations This example uses the following two points and calculates the distance between them: The former Ordnance Survey office in Southampton (Grid…
government  travel  navigation  coordinates  maps  grid  reference  calculator  resources 
august 2017 by asaltydog

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