Copyright © Joe Honton 2013
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Orthographic projections have faithful angles near the point of perspective, but have distorted areas, which become increasingly severe near the horizons.
A representation of Earth drawn by the JOE library can be progammatically rotated and tilted to use any place on Earth as the tangent of the projection, providing an undistorted rendering near that place. It is ideal for displaying continents, oceans and the polar regions.