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98263a7de6* start fixing up tests * fix up tests + automate with drone * fiddle with linting * messing about with drone.yml * some more fiddling * hmmm * add cache * add vendor directory * verbose * ci updates * update some little things * update sig
29 lines
1.3 KiB
Go
29 lines
1.3 KiB
Go
// Copyright 2014 Google Inc. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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/*
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Package s2 is a library for working with geometry in S² (spherical geometry).
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Its related packages, parallel to this one, are s1 (operates on S¹), r1 (operates on ℝ¹),
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r2 (operates on ℝ²) and r3 (operates on ℝ³).
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This package provides types and functions for the S2 cell hierarchy and coordinate systems.
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The S2 cell hierarchy is a hierarchical decomposition of the surface of a unit sphere (S²)
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into ``cells''; it is highly efficient, scales from continental size to under 1 cm²
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and preserves spatial locality (nearby cells have close IDs).
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More information including an in-depth introduction to S2 can be found on the
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S2 website https://s2geometry.io/
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*/
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package s2
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