Files
opencloud/vendor/github.com/blevesearch/geo/s2/builder.go
dependabot[bot] 9079629947 build(deps): bump github.com/blevesearch/bleve/v2 from 2.5.0 to 2.5.1
Bumps [github.com/blevesearch/bleve/v2](https://github.com/blevesearch/bleve) from 2.5.0 to 2.5.1.
- [Release notes](https://github.com/blevesearch/bleve/releases)
- [Commits](https://github.com/blevesearch/bleve/compare/v2.5.0...v2.5.1)

---
updated-dependencies:
- dependency-name: github.com/blevesearch/bleve/v2
  dependency-version: 2.5.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
2025-05-20 14:27:21 +00:00

36 lines
1.6 KiB
Go

// Copyright 2023 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package s2
const (
// maxEdgeDeviationRatio is set so that MaxEdgeDeviation will be large enough
// compared to snapRadius such that edge splitting is rare.
//
// Using spherical trigonometry, if the endpoints of an edge of length L
// move by at most a distance R, the center of the edge moves by at most
// asin(sin(R) / cos(L / 2)). Thus the (MaxEdgeDeviation / SnapRadius)
// ratio increases with both the snap radius R and the edge length L.
//
// We arbitrarily limit the edge deviation to be at most 10% more than the
// snap radius. With the maximum allowed snap radius of 70 degrees, this
// means that edges up to 30.6 degrees long are never split. For smaller
// snap radii, edges up to 49 degrees long are never split. (Edges of any
// length are not split unless their endpoints move far enough so that the
// actual edge deviation exceeds the limit; in practice, splitting is rare
// even with long edges.) Note that it is always possible to split edges
// when MaxEdgeDeviation is exceeded.
maxEdgeDeviationRatio = 1.1
)