41 lines
1.1 KiB
Go
41 lines
1.1 KiB
Go
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package orb
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// LineString represents a set of points to be thought of as a polyline.
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type LineString []Point
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// GeoJSONType returns the GeoJSON type for the object.
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func (ls LineString) GeoJSONType() string {
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return "LineString"
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}
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// Dimensions returns 1 because a LineString is a 1d object.
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func (ls LineString) Dimensions() int {
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return 1
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}
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// Reverse will reverse the line string.
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// This is done inplace, ie. it modifies the original data.
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func (ls LineString) Reverse() {
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l := len(ls) - 1
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for i := 0; i <= l/2; i++ {
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ls[i], ls[l-i] = ls[l-i], ls[i]
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}
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}
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// Bound returns a rect around the line string. Uses rectangular coordinates.
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func (ls LineString) Bound() Bound {
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return MultiPoint(ls).Bound()
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}
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// Equal compares two line strings. Returns true if lengths are the same
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// and all points are Equal.
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func (ls LineString) Equal(lineString LineString) bool {
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return MultiPoint(ls).Equal(MultiPoint(lineString))
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}
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// Clone returns a new copy of the line string.
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func (ls LineString) Clone() LineString {
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ps := MultiPoint(ls)
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return LineString(ps.Clone())
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}
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