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Geohex at Off4g2009

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Tadayasu Sasada
Tadayasu Sasada

GeoHex is a geocoding format that represents geographic locations as alphanumeric strings (hexcodes) for use in games, tracking, and other location-based applications. It offers advantages over traditional latitude-longitude coordinates by using shorter, privacy-preserving codes that are flexible in size and easy to use for calculating distances and routes between locations. The document provides examples of how GeoHex codes work and can be implemented in applications.

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GeoHex @sa2da 2009.12.21 #off4g #geohex
What’s GeoHex ? Map GeoHex on Map
GeoGaming Platform
GeoCode Format
Why GeoHex? VS No GeoHex GeoHex
Match for Game not cool So Coooooool!!!
Short Code 20 byte 4 byte
Save Privacy for sa2da sa2da pinpoint vague
Equal in distance 1 : 1.41 1:1
Flexible Size 132KpxU ameEA 032Lr Level:1 Level:60
Easy to use distance function getDistance(_x1,_y1, _x2,_y2) { _x2 = _x2 * Math.PI / 180.0; _y2 = _y2 * Math.PI / 180.0; _x1 = _x1 * Math.PI / 180.0; _y1 = _y1 * Math.PI / 180.0; var dx=_x2-_x1; var dy=_y2-_y1; var A = 6378137; // (6378137m) A.x - B.x var x = A * (dx) * Math.cos( _y1 ); var y = A * (dy); var old_exp = exp; dy=Math.log(Math.tan(Math.PI/4+_y2/2))-Math.log(Math.tan(Math.PI/4+_y1/2)); var rad=((dy>=0) ? 1:-1)*Math.acos(dx/Math.sqrt(dx*dx+dy*dy))*180.0/Math.PI; var tmpdist = Math.round(Math.sqrt(x*x + y*y)); totaldist = totaldist + tmpdist; distcnt(); }
Easy to use route with 6 direction 35.661960,139.697900 132KpxU 35.660093,139.701741 2 . . 3 . . 2 . . . . 20 × (n) byte 7 + (n) byte
GeoHex for what? Communication Game Tracking Index GIS Search Statistics
Coming soon... Real Game Event GeoHex for World
How to use GeoHex? Creative Commons License GitHub Perl kokogiko Ruby / GitHub hal_sk AS3 calcul_omikan http://github.com/geohex/
Thanks! Contact Demo URL http://geogames.net/hex/

More Related Content

Geohex at Off4g2009

  • 1. GeoHex @sa2da 2009.12.21 #off4g #geohex
  • 2. What’s GeoHex ? Map GeoHex on Map
  • 5. Why GeoHex? VS No GeoHex GeoHex
  • 6. Match for Game not cool So Coooooool!!!
  • 8. Save Privacy for sa2da sa2da pinpoint vague
  • 9. Equal in distance 1 : 1.41 1:1
  • 10. Flexible Size 132KpxU ameEA 032Lr Level:1 Level:60
  • 11. Easy to use distance function getDistance(_x1,_y1, _x2,_y2) { _x2 = _x2 * Math.PI / 180.0; _y2 = _y2 * Math.PI / 180.0; _x1 = _x1 * Math.PI / 180.0; _y1 = _y1 * Math.PI / 180.0; var dx=_x2-_x1; var dy=_y2-_y1; var A = 6378137; // (6378137m) A.x - B.x var x = A * (dx) * Math.cos( _y1 ); var y = A * (dy); var old_exp = exp; dy=Math.log(Math.tan(Math.PI/4+_y2/2))-Math.log(Math.tan(Math.PI/4+_y1/2)); var rad=((dy>=0) ? 1:-1)*Math.acos(dx/Math.sqrt(dx*dx+dy*dy))*180.0/Math.PI; var tmpdist = Math.round(Math.sqrt(x*x + y*y)); totaldist = totaldist + tmpdist; distcnt(); }
  • 12. Easy to use route with 6 direction 35.661960,139.697900 132KpxU 35.660093,139.701741 2 . . 3 . . 2 . . . . 20 × (n) byte 7 + (n) byte
  • 13. GeoHex for what? Communication Game Tracking Index GIS Search Statistics
  • 14. Coming soon... Real Game Event GeoHex for World
  • 15. How to use GeoHex? Creative Commons License GitHub Perl kokogiko Ruby / GitHub hal_sk AS3 calcul_omikan http://github.com/geohex/
  • 16. Thanks! Contact Demo URL http://geogames.net/hex/