Inverse Gnomonic Projections of Plane Regions

This Demonstration shows inverse gnomonic projections of flat surface areas lying in a horizontal plane tangent to the projection sphere.


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Snapshot 1: inverse gnomonic projections of lines are great semicircles
Snapshot 2: inverse gnomonic projections of circles typically are not circles
Snapshot 3: inverse gnomonic projection density increases with the projected region's distance from the tangent point
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