David Collins c005bc998f
Enhanced geographic to Cartesian arithmetic precision (#714)
* Unit tests for map projection arithmetic
- Unit tests for Globe's ellipsoidal properties and methods against official WGS84 reference values
- In-progress unit tests for ProjectionWGS84's geographic-to-cartesian arithmetic

* Unit tests for map projection arithmetic
- Unit tests for Globe's ellipsoidal properties and methods
- Unit tests for ProjectionWGS84's geographic-to-Cartesian transformations
- Employed official WGS84 reference values for all unit tests

* Unit tests for map projection arithmetic
- Unit tests for Globe's ellipsoidal properties and methods
- Unit tests for ProjectionWGS84's geographic-to-Cartesian transformations
- Employed official WGS84 reference values for all unit tests

* Enhanced geographic to Cartesian arithmetic precision

* Disabled unit tests validating incorrect results
- Several unit tests validated functions based on earlier output from the function itself.
- These functions computed incorrect results, and once repaired the erroneous unit tests failed.
- I've opted to disable these unit tests until an independent validation method can be established.
- In the meantime, I have added unit tests for the problematic low-level functions that are validated against independent results.

* Simplified WorldWind module import for new unit tests

* Clarified property docs for Globe.polarRadius and eccentricitySquared
2018-05-24 15:20:59 -07:00
2017-11-27 06:38:57 -06:00
2017-11-20 13:46:02 -08:00
2017-12-05 09:38:06 -08:00
2017-12-05 09:38:06 -08:00

in partnership with the European Space Agency

Web WorldWind

Build Status

3D virtual globe API for JavaScript, developed by NASA in partnership with ESA. Provides a geographic context, complete with terrain, for visualizing geographic or geo-located information in 3D and 2D. Web WorldWind provides high-resolution terrain and imagery, retrieved from remote servers automatically as needed. Developers can provide custom terrain and imagery. Provides a collection of shapes for displaying and interacting with geographic data and representing a range of geometric objects.

  • worldwind.arc.nasa.gov has setup instructions, developers guides, API documentation and more
  • Forum provides help from the WorldWind community
  • WebStorm is used by the NASA WorldWind development team

Get Started

The Web WorldWind Developer's Guide has a complete description of Web WorldWind's functionality. You'll also find there links to many Web WorldWind resources, including a user guide. The latest Web WorldWind release provides many simple examples showing how to use all of Web WorldWind's functionality.

Building

Install NodeJS. The build is known to work with v6.9.2 (LTS).

  • npm install downloads WorldWind's dependencies

  • npm run build builds everything

  • npm run doc generates the WorldWind API documentation

  • npm run test runs WorldWind's unit tests

  • npm run test:watch automatically runs WorldWind's unit tests when source code changes

License

Licensed under the Apache License, Version 2.0.

Description
The NASA WorldWind Javascript SDK (WebWW) includes the library and examples for creating geo-browser web applications and for embedding a 3D globe in HTML5 web pages.
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