| 1 | Copyright 2017 Mike Bostock
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| 2 |
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| 3 | Permission to use, copy, modify, and/or distribute this software for any purpose
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| 4 | with or without fee is hereby granted, provided that the above copyright notice
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| 5 | and this permission notice appear in all copies.
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| 6 |
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| 7 | THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
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| 8 | REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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| 9 | FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
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| 10 | INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
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| 11 | OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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| 12 | TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
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| 13 | THIS SOFTWARE.
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| 14 |
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| 15 |
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| 16 |
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| 17 | Philippe Rivière’s implementation of the Gray-Fuller raw projection (grayfuller.js)
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| 18 | belongs to the public domain.
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| 19 |
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| 20 | > Buckminster Fuller’s spherical triangle transformation procedure
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| 21 | >
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| 22 | > Based on Robert W. Gray’s formulae published in “Exact Transformation Equations
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| 23 | > For Fuller's World Map,” _Cartographica_, 32(3): 17-25 (1995).
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| 24 | >
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| 25 | > Implemented for D3.js by Philippe Rivière, 2018 (https://visionscarto.net/)
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| 26 | >
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| 27 | > To the extent possible under law, Philippe Rivière has waived all copyright
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| 28 | > and related or neighboring rights to this implementation. (Public Domain.)
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| 29 |
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