Whole-Earth rhumb polyhedra
Octahedral Mercator · 8 exact projective faces · loxodromes are straight and edge-continuous.
Projection
Double tetra.
Octahedron
Icosahedron
Stellated oct.
Double cone
Prime meridian
On edge
Face middle
Overlays
Lighting
Tissot
View
Center view
↺ CCW
CW ↻
Drag to orbit · Shift-drag rolls in screen space · wheel/pinch to zoom · C centers · Q/E roll
5° / 15° graticules · Tissot every 15°
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