6257ddba78
The big change is that the GeoJSON package has been completely rewritten to fix a few of geometry calculation bugs, increase performance, and to better follow the GeoJSON spec RFC 7946. GeoJSON updates - A LineString now requires at least two points. - All json members, even foreign, now persist with the object. - The bbox member persists too but is no longer used for geometry calculations. This is change in behavior. Previously Tile38 would treat the bbox as the object's physical rectangle. - Corrections to geometry intersects and within calculations. Faster spatial queries - The performance of Point-in-polygon and object intersect operations are greatly improved for complex polygons and line strings. It went from O(n) to roughly O(log n). - The same for all collection types with many children, including FeatureCollection, GeometryCollection, MultiPoint, MultiLineString, and MultiPolygon. Codebase changes - The pkg directory has been renamed to internal - The GeoJSON internal package has been moved to a seperate repo at https://github.com/tidwall/geojson. It's now vendored. Please look out for higher memory usage for datasets using complex shapes. A complex shape is one that has 64 or more points. For these shapes it's expected that there will be increase of least 54 bytes per point.
23 lines
605 B
Go
23 lines
605 B
Go
// Copyright 2018 Joshua J Baker. All rights reserved.
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// Use of this source code is governed by an MIT-style
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// license that can be found in the LICENSE file.
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package geometry
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// Geometry is a standard geometry
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type Geometry interface {
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Rect() Rect
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Empty() bool
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ContainsPoint(point Point) bool
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IntersectsPoint(point Point) bool
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ContainsRect(rect Rect) bool
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IntersectsRect(rect Rect) bool
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ContainsLine(line *Line) bool
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IntersectsLine(line *Line) bool
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ContainsPoly(poly *Poly) bool
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IntersectsPoly(poly *Poly) bool
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}
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// require conformance
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var _ = []Geometry{Point{}, Rect{}, &Line{}, &Poly{}}
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